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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

    FAQ

    Product Tags

    Overview

    Standard: ASTM A335

    Grade Group: P5,P9,P11,P22,P91, P92 etc.

    Thickness: 1 - 100 mm

    Outer Diameter(Round): 10 - 1000 mm

    Length: Fixed length or random length

    Section Shape: Round

    Place of Origin: China

    Certification: ISO9001:2008

     

    Alloy Or Not: Alloy

    Application: Boiler Pipe

    Surface Treatment: As customer's requirement

    Technique: Hot Rolled/ Cold Drawn

    Heat treatment: Annealing/normalizing/Tempering

    Special Pipe: Thick Wall Pipe

    Usage: high pressure steam pipe, Boiler and Heat Exchanger

    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

    Main Grade

    Grade of high-quality alloy pipe :P1,P2,P5,P9,P11,P22,P91,P92 etc

     

    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

     

    Product Detail


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