seamless alloy steel pipe ASTM A335 standard high pressure boiler pipe

Short Description:

ASTM A335 standard high Temperature boiler pipe seamless alloy pipe with IBR certifiaction

Seamless alloy pipe for boiler ,heat exchanger etc industry

 


  • Payment: 30% deposit, 70% L/C or B/L copy or 100% L/C at sight
  • Min.Order Quantity: 1 PC
  • Supply Ability: Annual 20000 Tons Inventory of Steel Pipe
  • Lead Time: 7-14 days if in stock, 30-45 days to produce
  • Packing: Black Vanishing, bevel and cap for every single pipe; OD below 219mm need to pack in bundle, and each bundle no exceed 2 tons.
  • Product Detail

    P5

    P9

    P11

    P22

    P92

    Product Tags

    Overview

    Standard: ASTM A335 Alloy Or Not: Alloy
    Grade Group: P5,P9,P11,P22,P91, P92 Etc. Application: Boiler Pipe
    Thickness: 1 - 100 Mm Surface Treatment: As Customer's Requirement
    Outer Diameter(Round): 10 - 1000 Mm Technique: Hot Rolled/ Cold Drawn
    Length: Fixed Length Or Random Length Heat Treatment: Annealing/Normalizing/Tempering
    Section Shape: Round Special Pipe: Thick Wall Pipe
    Place Of Origin: China Usage: High Pressure Steam Pipe, Boiler And Heat Exchanger
    Certification: ISO9001:2008 Test: ET/UT

    Application

    It is mainly used to make high-quality alloy steel boiler pipe , heat exchanged pipe, high pressure steam pipe for petroleum and chemical industry

    1 锅炉管
    2 化工化肥管
    产品-6
    4 Fabrication

    Main Grade

    Grade of high-quality alloy pipe :P5,P9,P11,P22,P91,P92 etc

     

    ASTM A335 P9
    P11伟浩(1)
    P22
    P91 406
    P92 720
    P91 508

    Chemical Component

    Grade UN C≤ Mn P≤ S≤ Si≤ Cr Mo
    Sequiv.
    P1 K11522 0.10~0.20 0.30~0.80 0.025 0.025 0.10~0.50 0.44~0.65
    P2 K11547 0.10~0.20 0.30~0.61 0.025 0.025 0.10~0.30 0.50~0.81 0.44~0.65
    P5 K41545 0.15 0.30~0.60 0.025 0.025 0.5 4.00~6.00 0.44~0.65
    P5b K51545 0.15 0.30~0.60 0.025 0.025 1.00~2.00 4.00~6.00 0.44~0.65
    P5c K41245 0.12 0.30~0.60 0.025 0.025 0.5 4.00~6.00 0.44~0.65
    P9 S50400 0.15 0.30~0.60 0.025 0.025 0.50~1.00 8.00~10.00 0.44~0.65
    P11 K11597 0.05~0.15 0.30~0.61 0.025 0.025 0.50~1.00 1.00~1.50 0.44~0.65
    P12 K11562 0.05~0.15 0.30~0.60 0.025 0.025 0.5 0.80~1.25 0.44~0.65
    P15 K11578 0.05~0.15 0.30~0.60 0.025 0.025 1.15~1.65 0.44~0.65
    P21 K31545 0.05~0.15 0.30~0.60 0.025 0.025 0.5 2.65~3.35 0.80~1.60
    P22 K21590 0.05~0.15 0.30~0.60 0.025 0.025 0.5 1.90~2.60 0.87~1.13
    P91 K91560 0.08~0.12 0.30~0.60 0.02 0.01 0.20~0.50 8.00~9.50 0.85~1.05
    P92 K92460 0.07~0.13 0.30~0.60 0.02 0.01 0.5 8.50~9.50 0.30~0.60

    A New designation established in accordance with Practice E 527 and SAE J1086, Practice for Numbering Metals and Alloys (UNS). B Grade P 5c shall have a titanium content of not less than 4 times the carbon content and not more than 0.70 %; or a columbium content of 8 to 10 times the carbon content.

    Mechanical Property

    Mechanical properties  P1,P2  P12  P23  P91  P92,P11  P122
     Tensile strength  380  415  510  585  620  620
     Yield strength  205  220  400  415  440  400

    Heat Treatment

    Grade Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing or Tempering
    P5, P9, P11, and P22 Temperature Range F [C]
    A335 P5 (b,c) Full or Isothermal Anneal    
      Normalize and Temper ***** 1250 [675]
      Subcritical Anneal (P5c only) ***** 1325 – 1375 [715 - 745]
    A335 P9 Full or Isothermal Anneal    
      Normalize and Temper ***** 1250 [675]
    A335 P11 Full or Isothermal Anneal    
      Normalize and Temper ***** 1200 [650]
    A335 P22 Full or Isothermal Anneal    
      Normalize and Temper ***** 1250 [675]
    A335 P91 Normalize and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]
      Quench and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]

    Tolerance

    For pipe ordered to inside diameter, the inside diameter shall not vary more than 6 1 % from the specified inside diameter

    Permissible Variations in Outside Diameter

    NPS Designator in mm in mm
    1⁄8to 11⁄2, incl 1⁄64 (0.015) 0.4 1⁄64(0.015) 0.4
    Over 11⁄2 to 4, incl. 1⁄32(0.031) 0.79 1⁄32(0.031) 0.79
    Over 4 to 8, incl 1⁄16(0.062) 1.59  1⁄32(0.031) 0.79
    Over 8 to 12, incl.  3⁄32(0.093) 2.38 1⁄32(0.031) 0.79
    Over 12 6 1 % of the specified
    outside
    diameter
         

    Test Requirement

    Hydraustatic Test:

    The Steel Pipe Should Be Tested Hydraulically One By One. The Maximum Test Pressure Is 20 MPa. Under The Test Pressure, The Stabilization Time Should Be Not Less Than 10 S, And The Steel Pipe Should Not Leak.

    After The User Agrees, The Hydraulic Test Can Be Replaced By Eddy Current Testing Or Magnetic Flux Leakage Testing.

    Nondestructive Test:

    Pipes That Require More Inspection Should Be Ultrasonically Inspected One By One. After The Negotiation Requires The Consent Of The Party And Is Specified In The Contract, Other Non-Destructive Testing Can Be Added.

    Flattening Test:

    Tubes With An Outer Diameter Greater Than 22 Mm Shall Be Subjected To A Flattening Test. No Visible Delamination, White Spots, Or Impurities Should Occur During The Entire Experiment.

    Hardness Test:

    For pipe of Grades P91, P92, P122, and P911, Brinell, Vickers, or Rockwell hardness tests shall be made on a specimen from each lot

    Bend Test:

    For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test. Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser

     

    Storage

    库存1
    库存2

    Product Detail

    Loading & Shipping

     1. Loading by container
    2. Loading by bulk shipment

    Video


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  • ASTM A335 P5 is an alloy steel seamless ferritic high temperature pipe of American standard. Alloy tube is a kind of seamless steel tube, its performance is much higher than the general seamless steel tube, because this kind of steel tube contains more C, the performance is less than the ordinary seamless steel tube, so the alloy tube is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.

    Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous

    Corresponding domestic alloy steel :1Cr5Mo GB 9948-2006 “Seamless Steel Pipe Standard for Petroleum Cracking”

    • Payment:30% Deposit, 70% L/C Or B/L Copy Or 100% L/C At Sight
    • Min.Order Quantity:1 PC
    • Supply Ability:Annual 20000 Tons Inventory Of Steel Pipe
    • Lead Time:7-14 Days If In Stock, 30-45 Days To Produce
    • Packing:Black Vanishing, Bevel And Cap For Every Single Pipe; OD Below 219mm Need To Pack In Bundle, And Each Bundle No Exceed 2 Tons.

    Overview

    Standard: ASTM A335 Alloy Or Not: Alloy
    Grade Group: P5 Application: Boiler Pipe
    Thickness: 1 – 100 Mm Surface Treatment: As Customer’s Requirement
    Outer Diameter(Round): 10 – 1000 Mm Technique: Hot Rolled/ Cold Drawn
    Length: Fixed Length Or Random Length Heat Treatment: Annealing/Normalizing/Tempering
    Section Shape: Round Special Pipe: Thick Wall Pipe
    Place Of Origin: China Usage: High Pressure Steam Pipe, Boiler And Heat Exchanger
    Certification: ISO9001:2008 Test: ET/UT

    Application

    It Is Mainly Used To Make High-Quality Alloy Steel Boiler Pipe , Heat Exchanged Pipe, High Pressure Steam Pipe For Petroleum And Chemical Industry

    Chemical Component

    Compositions

    Data

    UNS Designa-tion K41545
    Carbon(max.) 0.15
    Manganese 0.30-0.60
    Phosphorus(max.) 0.025
    Silicon(max.) 0.50
    Chromium 4.00-6.00
    Molybdenum 0.45-0.65
    Other Elements
    A New Designation Established In Accordance With Practice E 527 And SAE J1086, Practice For Numbering Metals And Alloys (UNS). B Grade P 5c Shall Have A Titanium Content Of Not Less Than 4 Times The Carbon Content And Not More Than 0.70 %; Or A Columbium Content Of 8 To 10 Times The Carbon Content.

    Mechanical Property

    Properties Data
    Tensile Strength, Min, (MPa) 415 Mpa
    Yield Strength, Min, (MPa) 205 Mpa
    Elongation, Min, (%), L/T 30/20

    Heat Treatment

    Grade Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing Or Tempering
    P5, P9, P11, And P22 Temperature Range F [C]
    A335 P5 (B,C) Full Or Isothermal Anneal    
    A335 P5b Normalize And Temper ***** 1250 [675]
    A335 P5c Subcritical Anneal ***** 1325 – 1375 [715 - 745]

    Tolerance

    For Pipe Ordered To Inside Diameter, The Inside Diameter Shall Not Vary More Than  ±1 % From The Specified Inside Diameter

    Permissible Variations In Outside Diameter

    NPS Designator Positive tolerance negative tolerance
    In Mm In Mm
    1⁄8to 11⁄2, Incl 1⁄64 (0.015) 0.4 1⁄64(0.015) 0.4
    Over 11⁄2 To 4, Incl. 1⁄32(0.031) 0.79 1⁄32(0.031) 0.79
    Over 4 To 8, Incl 1⁄16(0.062) 1.59 1⁄32(0.031) 0.79
    Over 8 To 12, Incl. 3⁄32(0.093) 2.38 1⁄32(0.031) 0.79
    Over 12 ±1 % Of The Specified
    Outside
    Diameter

    Test Requirement

    Hydraustatic Test:

    The Steel Pipe Should Be Tested Hydraulically One By One. The Maximum Test Pressure Is 20 MPa. Under The Test Pressure, The Stabilization Time Should Be Not Less Than 10 S, And The Steel Pipe Should Not Leak.

    After The User Agrees, The Hydraulic Test Can Be Replaced By Eddy Current Testing Or Magnetic Flux Leakage Testing.

    Nondestructive Test:

    Pipes That Require More Inspection Should Be Ultrasonically Inspected One By One. After The Negotiation Requires The Consent Of The Party And Is Specified In The Contract, Other Non-Destructive Testing Can Be Added.

    Flattening Test:

    Tubes With An Outer Diameter Greater Than 22 Mm Shall Be Subjected To A Flattening Test. No Visible Delamination, White Spots, Or Impurities Should Occur During The Entire Experiment.

    Hardness Test:

    For Pipe Of Grades P91, P92, P122, And P911, Brinell, Vickers, Or Rockwell Hardness Tests Shall Be Made On A Specimen From Each Lot

    Bend Test:

    For Pipe Whose Diameter Exceeds NPS 25 And Whose Diameter To Wall Thickness Ratio Is 7.0 Or Less Shall Be Subjected To The Bend Test Instead Of The Flattening Test. Other Pipe Whose Diameter Equals Or Exceeds NPS 10 May Be Given The Bend Test In Place Of The Flattening Test Subject To The Approval Of The Purchaser

    Material & Manufacture

    Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

    Heat Treatment
    • A / N+T
    • N+T / Q+T
    • N+T
    Mechanical Tests Specified
    • Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
    • For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
    • For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
    Notes for Bend Test:
    • For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
    • Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
    • The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

    ASTM A335 P5 seamless steel tubes are suitable for water, steam, hydrogen, sour oil, etc. If used for water vapor, its maximum operating temperature is 650; When used in working medium such as sour oil, it has good high-temperature sulfur corrosion resistance, and is often used in high-temperature sulfur corrosion conditions of 288~550.

    Production process:

    1. Hot rolling (extruded seamless steel tube) : round tube billet → heating → perforation → three-roll cross rolling, continuous rolling or extrusion → tube stripping → sizing (or reducing) → cooling → straightening → water pressure test (or defect detection) → marking → storage

    2. Cold drawing (rolling) seamless steel tube: round tube billet → heating → perforation → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → water pressure test (flaw detection) → marking → storage

    Application Scenarios:

    In atmospheric and vacuum devices for processing high-sulfur crude oil, ASTM A335 P5 seamless steel tubes are mainly used for the bottom pipelines of atmospheric and vacuum towers, furnace tubes of atmospheric and vacuum furnaces, high-speed sections of atmospheric and vacuum oil conversion lines and other high-temperature oil and gas pipelines containing sulfur.

                1 锅炉管2 化工化肥管

    In FCC units, ASTM A335 P5 seamless steel tubes are mainly used in high-temperature slurry, catalyst and return refining pipelines, as well as some other high-temperature sulfur oil and gas pipelines.

    v2-0c41f593f019cd1ba7925cc1c0187f06_1440w(1)

    In delayed coking unit, ASTM A335 P5 seamless steel pipe is mainly used for high temperature feed pipe at the bottom of coke tower and high temperature oil and gas pipe at the top of coke tower, furnace pipe at the bottom of coke furnace, pipe at the bottom of fracking tower and some other high temperature oil and gas pipe containing sulfur.

     

    Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.

    ASTM A335 P9 is an alloy steel seamless ferritic high temperature pipe of American standard. Alloy tube is a kind of seamless steel tube, its performance is much higher than the general seamless steel tube, because this kind of steel tube contains more C, the performance is less than the ordinary seamless steel tube, so the alloy tube is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.

    A335 P9 is a high temperature chromium-molybdenum alloy heat resistant steel produced according to the American standard. Because of its excellent oxidation resistance, high temperature strength and sulfide corrosion resistance, it is widely used in high temperature and high pressure inflammable and explosive pipelines of petroleum refining plants, especially direct heat pipe of heating furnace, medium temperature can reach 550~600℃.

    Corresponding domestic alloy steel :1Cr5Mo GB 9948-2006 “Seamless Steel Pipe Standard for Petroleum Cracking”

    Overview

    Standard: ASTM A335 Alloy Or Not: Alloy
    Grade Group: P9 Application: Boiler Pipe
    Thickness: 1 – 100 Mm Surface Treatment: As Customer’s Requirement
    Outer Diameter(Round): 10 – 1000 Mm Technique: Hot Rolled/ Cold Drawn
    Length: Fixed Length Or Random Length Heat Treatment: Annealing/Normalizing/Tempering
    Section Shape: Round pecial Pipe: Thick Wall Pipe
    Place Of Origin: China Usage: High Pressure Steam Pipe, Boiler And Heat Exchanger
    Certification: ISO9001:2008 Test: ET/UT

     

    Chemical Component

    Chemical composition of seamless steel pipes for petroleum cracking

    ASTM A335M

    C

    SI

    Mn

    P

    S

    Cr

    Mo

    P9

    ≦0.15

    0.25-1.00

    0.30-0.60

    ≦0.025

    ≦0.025

    8.00-10.00

    0.90-1.10

     

    Mechanical Property

    Properties

    Data

    Tensile strength, min, (MPa) 415 Mpa
    Yield strength, min, (MPa) 205 Mpa
    Elongation, min, (%), L/T 14
    HB 180

    Heat Treatment

     

    Grade

    Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing Or Tempering
    P5, P9, P11, And P22    
    A335 P9 Full Or Isothermal Anneal    
      Normalize And Temper ***** 1250 [675]

    A335 P9 can be heat treated by annealing or normalizing + tempering processes. Annealing process cooling speed is slow, affect the production rhythm, production process is difficult to control, and high cost; Therefore, the actual production rarely use annealing heat treatment process, often use normalizing + tempering heat treatment instead of annealing process, to achieve industrial production.

    A335 P9 steel because it does not contain V, Nb and other microalloying elements, hence the normalizing temperature than A335 P91 steel is lower, 950~1050℃, hold for 1h, the process when normalizing most of the carbide dissolved but no obvious grain growth, but too high normalizing temperature is prone to austenite grain coarse: tempering temperature is 740-790℃, in order to obtain lower hardness, tempering temperature time should be appropriately extended.

    Tolerance

    For Pipe Ordered To Inside Diameter, The Inside Diameter Shall Not Vary More Than  ±1 % From The Specified Inside Diameter

    Permissible Variations In Outside Diameter

    NPS Designator

    Positive tolerance

    negative tolerance

    In

    Mm

    In

    Mm

    1⁄8to 11⁄2, Incl

    1⁄64 (0.015)

    0.4

    1⁄64(0.015)

    0.4

    Over 11⁄2 To 4, Incl.

    1⁄32(0.031)

    0.79

    1⁄32(0.031)

    0.79

    Over 4 To 8, Incl

    1⁄16(0.062)

    1.59

    1⁄32(0.031)

    0.79

    Over 8 To 12, Incl.

    3⁄32(0.093)

    2.38

    1⁄32(0.031)

    0.79

    Over 12

    ±1 % Of The Specified
    Outside
    Diameter

    Production process:

    A335 is designed according to the equipment status of Tianjin steel pipe and the characteristics of A335 P9 steel P9 trial-producing process of seamless steel pipe: Electric arc furnace steelmaking → ladle refining → vacuum degassing → die casting → tube blank forging → tube blank annealing → tube blank heating → oblique piercing → PQF continuous tube rolling mill tube rolling → three-roll sizing → cooling bed cooling → tube end According to cutting → steel pipe straightening → magnetic flux leakage detection → heat treatment → straightening → ultrasonic flaw detection → hydraulic test → size and appearance inspection →storage.

    manufacturing process

    Item number

    manufacturing process

    Action and Quality Control

    1

    Pre-inspection meeting

    Minutes of the meeting

    2

    ASEA-SKF

    Adjust chemical composition

    *Chemical composition analysis

    *melting temperature

    3

    CCM

    billet
    *Smelting analysis

    4

    Raw material inspection

    Blank inspection and quality confirmation

    *Appearance status: The surface of the billet should be free of defects such as scarring, slag, pinholes, cracks, etc. Imprints, dents and pits must not exceed 2.5mm

    5

    Blank heating

    Heating billets in a rotary furnace

    *Control heating temperature

    6

    pipe perforation

    Pierce with a guide/guide plate punch

    *Control the temperature when piercing

    * Control the size after perforation

    7

    Hot Rolled

    Hot rolling in continuous tube mills

    *Set the pipe wall thickness

    8

    Size

    Control outside diameter and wall thickness dimensions

    * Complete outer diameter machining

    * Complete wall thickness machining

    9

    chemical composition

    Chemical composition analysis

    * Acceptance criteria for chemical composition. The results of chemical composition analysis should be recorded in the material book.

    10

    Normalizing + Tempering

    Heat treatment (normalizing) is performed after hot rolling. Heat treatment should pay attention to control the temperature and duration.

    After heat treatment, the mechanical properties of the product should meet the ASTM A335 standard

    11

    air cooling

    Step-by-step cooling bed

    12

    sawing

    Sawing to specified length

    * Steel pipe length control

    13

    Straightness (if necessary)

    Controls flatness.

    After straightening, the straightness should be in accordance with ASTM A335

    14

    Inspection and Acceptance

    Appearance and Dimensional Inspection

    *Steel dimensional tolerances should be in accordance with ASTM A999

    Note: Outer diameter tolerance: ±0.75%D

    *Appearance inspection should be carried out one by one according to ASTM A999 standard to avoid poor surface

    15

    flaw detection

    *The whole body of the steel pipe should be ultrasonically inspected for longitudinal defects according to ISO9303/E213

    Ultrasonic testing:
    1) Application standard: ISO9303/ASTM E213
    2) Reference standard: Longitudinal defect inspection.
    3) Acceptance level: L2/C (external and internal)
    Note: The flaw detection inspector should have the qualification certification of the non-destructive testing agency of the Chinese Mechanical Engineering Society.

    16

    Mechanical property test

    (1) Tensile (longitudinal) test and flattening test

    Inspection frequency
    “Lot” is defined according to ASTM A335

    5%/batch, at least 2 tubes

    Min

    Max

    P9

    Yield Strength(Mpa)

    205

     

    tensile strength (MPa)

    415

     

    Elongation

    According to ASTM A335 standard

    Flattening experiment

    According to ASTM A999 standard

    (2) Hardness test

    Test frequency: same as tensile test

    1 piece/batch

    HV&HRC

    ≤250HV10&≤25 HRC   HV10≤250&HRC≤25

    Note: Vickers hardness test standard: ISO6507 or ASTM E92;

    Rockwell hardness test standard: ISO6508 or ASTM E18

    17

    NDT

    Each steel pipe shall be tested in accordance with the requirements of testing methods E213, E309 or E570.

    18

    water pressure test

    Hydrostatic testing according to ASTM A999, test pressure
    Calculated according to the formula of ASTM A999,
    Water pressure duration: no leakage or deformation within 5 seconds

    19

    bevel

    Compliant beveling of both ends of the steel pipe according to ASTM B16.25fig.3(a)
    *Conform to the bevel angle: 30º-35°
    * Blunt edge: 1.6mm (±0.8mm)

    20

    Measurement of weight and length

    *Single weight tolerance: -6%~ +4%.
    *Length of finished pipe: 6-9 meters

    21

    Pipe standard

    The outer surface of the steel pipe shall be spray marked according to ASTM A335 standard and customer requirements. The marking contents are as follows:

    “Length Weight TPCO ASTM A335 Year-Month Dimensions P9 S LT**C ***MPa/NDE Heat Number Lot Number Tube Number

    22

    painted

    The outer surface of the tube is painted according to the factory standard

    23

    pipe end cap

    **There should be plastic caps at both ends of each tube

    24

    material list

    *Material book should be provided according to EN10204 3.1.                                        ”Customer PO should be reflected in the material book.

    图3 P9(1)      ASTM A335 P9

    P9 1

    P9  2

    P9 图3

    P9(4)

    ASTM A335 P11 is an alloy steel seamless ferritic high temperature pipe of American standard. Alloy tube is a kind of seamless steel tube, its performance is much higher than the general seamless steel tube, because this kind of steel tube contains more C, the performance is less than the ordinary seamless steel tube, so the alloy tube is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.

    Overview

    Standard: ASTM A335 Alloy Or Not: Alloy
    Grade Group: P11 Application: Boiler Pipe
    Thickness: 1 – 100 Mm Surface Treatment: As Customer’s Requirement
    Outer Diameter(Round): 10 – 1000 Mm Technique: Hot Rolled/ Cold Drawn
    Length: Fixed Length Or Random Length Heat Treatment: Annealing/Normalizing/Tempering
    Section Shape: Round pecial Pipe: Thick Wall Pipe
    Place Of Origin: China Usage: High Pressure Steam Pipe, Boiler And Heat Exchanger
    Certification: ISO9001:2008 Test: ET/UT

     

    Chemical Component

    Chemical composition of seamless steel pipes for petroleum cracking

    ASTM A335M

    C

    SI

    Mn

    P

    S

    Cr

    Mo

    P11

    0.05-0.15

    0.5-1.00

    0.30-0.61

    0.025

    0.025

    1.00-1.50

    0.44-0.65

     

    Mechanical Property

    Properties

    Data

    Tensile strength, min, (MPa) 415 Mpa
    Yield strength, min, (MPa) 205Mpa

    Heat Treatment

     

    Grade

    Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing Or Tempering
    P5, P9, P11, And P22    
    A335 P11 Full Or Isothermal Anneal    
      Normalize And Temper ***** 1250[650]

    Tolerance

    For Pipe Ordered To Inside Diameter, The Inside Diameter Shall Not Vary More Than  ±1 % From The Specified Inside Diameter

    Permissible Variations In Outside Diameter

    NPS Designator

    Positive tolerance

    negative tolerance

    In

    Mm

    In

    Mm

    1⁄8to 11⁄2, Incl

    1⁄64 (0.015)

    0.4

    1⁄64(0.015)

    0.4

    Over 11⁄2 To 4, Incl.

    1⁄32(0.031)

    0.79

    1⁄32(0.031)

    0.79

    Over 4 To 8, Incl

    1⁄16(0.062)

    1.59

    1⁄32(0.031)

    0.79

    Over 8 To 12, Incl.

    3⁄32(0.093)

    2.38

    1⁄32(0.031)

    0.79

    Over 12

    ±1 % Of The Specified
    Outside
    Diameter

    QQ图片20191018152313(1)   P11伟浩(1)

    ASTM A335 P22 is a seamless alloy steel pipe for high temperature ferritic use. Alloy tube is a kind of seamless steel tube, its performance is much higher than the general seamless steel tube, because this kind of steel tube contains more C, the performance is less than the ordinary seamless steel tube, so the alloy tube is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.

    Overview

    Standard: ASTM A335 Alloy Or Not: Alloy
    Grade Group: P22 Application: Boiler Pipe
    Thickness: 1 – 100 Mm Surface Treatment: As Customer’s Requirement
    Outer Diameter(Round): 10 – 1000 Mm Technique: Hot Rolled/ Cold Drawn
    Length: Fixed Length Or Random Length Heat Treatment: Annealing/Normalizing/Tempering
    Section Shape: Round pecial Pipe: Thick Wall Pipe
    Place Of Origin: China Usage: High Pressure Steam Pipe, Boiler And Heat Exchanger
    Certification: ISO9001:2008 Test: ET/UT

    Chemical Component

    Chemical composition of seamless steel pipes for petroleum cracking

    ASTM A335M

    C

    SI

    Mn

    P

    S

    Cr

    Mo

    P22

    0.05-0.15

    0.5

    0.30-0.60

    0.025

    0.025

    1.90-2.60

    0.87-1.13

    Mechanical Property

    Properties

    Data

    Tensile strength, min, (MPa) 415 Mpa
    Yield strength, min, (MPa) 205Mpa

    Heat Treatment

     

    Grade

    Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing Or Tempering
    P5, P9, P11, And P22    
    A335 P22 Full Or Isothermal Anneal    
      Normalize And Temper ***** 1250[650]

    Tolerance

    For Pipe Ordered To Inside Diameter, The Inside Diameter Shall Not Vary More Than  ±1 % From The Specified Inside Diameter

    Permissible Variations In Outside Diameter

    NPS Designator

    Positive tolerance

    negative tolerance

    In

    Mm

    In

    Mm

    1⁄8to 11⁄2, Incl

    1⁄64 (0.015)

    0.4

    1⁄64(0.015)

    0.4

    Over 11⁄2 To 4, Incl.

    1⁄32(0.031)

    0.79

    1⁄32(0.031)

    0.79

    Over 4 To 8, Incl

    1⁄16(0.062)

    1.59

    1⁄32(0.031)

    0.79

    Over 8 To 12, Incl.

    3⁄32(0.093)

    2.38

    1⁄32(0.031)

    0.79

    Over 12

    ±1 % Of The Specified
    Outside
    Diameter

    A335 P22 is a 2.25Cr-1Mo Chromium-molybdenum high Temperature ferritic steel for boilers and superheaters, ASTM A335/A335M standard. In 1985, it was transplanted into GB5310 and named 12Cr2MoG. Other countries have similar steel grades, such as the Federal Republic of Germany 10CrMo910 and Japan STBA24. In cr-1Mo steel series, its thermal strength is relatively high, under the same temperature (temperature 580) its screw fracture strength and allowable stress is even higher than 9CR-1Mo steel, and it has good processing performance and welding performance, good durable plasticity. Therefore, it has been widely used in harsh working environment, such as thermal power, nuclear power and some hydrogen equipment in various heating pipes and high pressure vessels.

    Permissible temperature: A335P22 (SA-213T22) is mainly used in 300,600MW and other large capacity power plant boiler tube wall temperature 580superheater and tube wall temperature & LT;540wall steam pipe and header, this kind of steel has been widely used in the United States, Japan and Europe, has a long history of operation in power plants, is a stable performance, good process performance of mature steel.

    12Cr1MoV steel belongs to chromium-molybdenum vanadium steel vanadium steel, mainly used for 12Cr1MoV/GB5310 steel pipe. Widely used, is the temperature in 480~580high temperature area with one of the most materials. 12Cr1MoVG steel tube service temperature: it is mainly used for the main steel of superheater tube, header and steam pipe of high pressure boiler whose tube wall temperature is less than or equal to 580.

    Production process:Hardness Test:

    1. Hot rolling (extruded seamless steel tube) : round tube billet → heating → perforation → three-roll cross rolling, continuous rolling or extrusion → tube stripping → sizing (or reducing) → cooling → straightening → water pressure test (or defect detection) → marking → storage

    2. Cold drawing (rolling) seamless steel tube: round tube billet → heating → perforation → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → water pressure test (flaw detection) → marking → storage

    Packing:

    Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

    QQ图片20200623142628(1)  P22

    P11伟浩(1)  GD0BL8W8(GE3U5V7O[5_HQY(1)

    Overview

    P92 standard high temperature boiler tube seamless alloy pipe.

     

    Standard: ASTM A335 Alloy Or Not: Alloy
    Grade Group: P92 Application: Boiler Pipe
    Thickness: 1 – 100 Mm Surface Treatment: As Customer’s Requirement
    Outer Diameter(Round): 10 – 1000 Mm Technique: Hot Rolled/ Cold Drawn
    Length: Fixed Length Or Random Length Heat Treatment: Annealing/Normalizing/Tempering
    Section Shape: Round pecial Pipe: Thick Wall Pipe
    Place Of Origin: China Usage: High Pressure Steam Pipe, Boiler And Heat Exchanger
    Certification: ISO9001:2008 Test: ET/UT

     

    Chemical Component

    Chemical composition of seamless steel pipes for petroleum cracking 

    ASTM A335M

    C

    SI

    Mn

    P

    S

    Cr

    Mo

    P92

    0.07-0.13

    0.5

    0.30-0.60

    0.02

    0.01

    8.50-9.5

    0.30-0.60

     

    Mechanical Property

    Properties

    Data

    Tensile strength, min, (MPa) 620 Mpa
    Yield strength, min, (MPa) 440Mpa

    Heat Treatment

     

    Grade

    Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing Or Tempering
    P5, P9, P11, And P22    
    A335 P92 Full Or Isothermal Anneal    
      Normalize And Temper ***** 1250[675]

    Tolerance

    For Pipe Ordered To Inside Diameter, The Inside Diameter Shall Not Vary More Than  ±1 % From The Specified Inside Diameter

    Permissible Variations In Outside Diameter

    NPS Designator

    Positive tolerance

    negative tolerance

    In

    Mm

    In

    Mm

    1⁄8to 11⁄2, Incl

    1⁄64 (0.015)

    0.4

    1⁄64(0.015)

    0.4

    Over 11⁄2 To 4, Incl.

    1⁄32(0.031)

    0.79

    1⁄32(0.031)

    0.79

    Over 4 To 8, Incl

    1⁄16(0.062)

    1.59

    1⁄32(0.031)

    0.79

    Over 8 To 12, Incl.

    3⁄32(0.093)

    2.38

    1⁄32(0.031)

    0.79

    Over 12

    ±1 % Of The Specified
    Outside
    Diameter

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