18 Years Factory Heat Exchangers Pipe - Seamless Alloy Steel Boiler Pipes Superheater alloy pipes Heat Exchanger Tubes – Sanonpipe
18 Years Factory Heat Exchangers Pipe - Seamless Alloy Steel Boiler Pipes Superheater alloy pipes Heat Exchanger Tubes – Sanonpipe Detail:
Overview
Application
It is mainly used to make high-quality alloy steel pipe for high pressure boiler pipe, heat exchanger pipe and super heat pipe
Main Grade
Grade of high-quality Alloy steel: T2,T12,T11,T22, T91, T92 etc.
Chemical Component
| Steel Grade | Chemical Composition% | ||||||||||
| C | Si | Mn | P, S Max | Cr | Mo | Ni Max | V | Al Max | W | B | |
| T2 | 0.10~0.20 | 0.10~0.30 | 0.30~0.61 | 0.025 | 0.50~0.81 | 0.44~0.65 | – | – | – | – | – |
| T11 | 0.05~0.15 | 0.50~1.00 | 0.30~0.60 | 0.025 | 1.00~1.50 | 0.44~0.65 | – | – | – | – | – |
| T12 | 0.05~0.15 | Max 0.5 | 0.30~0.61 | 0.025 | 0.80~1.25 | 0.44~0.65 | – | – | – | – | – |
| T22 | 0.05~0.15 | Max 0.5 | 0.30~0.60 | 0.025 | 1.90~2.60 | 0.87~1.13 | – | – | – | – | – |
| T91 | 0.07~0.14 | 0.20~0.50 | 0.30~0.60 | 0.02 | 8.0~9.5 | 0.85~1.05 | 0.4 | 0.18~0.25 | 0.015 | – | – |
| T92 | 0.07~0.13 | Max 0.5 | 0.30~0.60 | 0.02 | 8.5~9.5 | 0.30~0.60 | 0.4 | 0.15~0.25 | 0.015 | 1.50~2.00 | 0.001~0.006 |
For T91 other than above also includes Nickel 0.4, Va 0.18-0.25, Ni 0.06-0.10, Ni 0.03-0.07, Al 0.02, Ti 0.01, Zr 0.01. A Maximum, unless range or minimum is indicated. Where ellipses (…) appear in this table, there is no requirement, and analysis for the element need not be determined or reported. B It is permissible to order T2 and T12 with a sulfur content of 0.045 max. C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.
Mechanical Property
| Steel Grade | Mechanical Properties | |||
| T. S | Y. P | Elongation | Hardness | |
| T2 | ≥ 415MPa | ≥ 205MPa | ≥ 30% | 163HBW(85HRB) |
| T11 | ≥ 415MPa | ≥ 205MPa | ≥ 30% | 163HBW(85HRB) |
| T12 | ≥ 415MPa | ≥ 220MPa | ≥ 30% | 163HBW(85HRB) |
| T22 | ≥ 415MPa | ≥ 205MPa | ≥ 30% | 163HBW(85HRB) |
| T91 | ≥ 585MPa | ≥ 415MPa | ≥ 20% | 250HBW(25HRB) |
| T92 | ≥ 620MPa | ≥ 440MPa | ≥ 20% | 250HBW(25HRB) |
Tolerance
Permitted Variations in Wall thickness
| Wallthickess % | |||||
| outside diameter in. mm |
0.095 2.4 and under |
over0.095 to 0.15 2.4-3.8 incl. |
over 0.15 to 0.18 3.8-4.6 incl |
over 0.18 to 4.6 |
|
| over under over under over under over under | |||||
| seamless, hot finished | |||||
| 4inch and under 40 0 35 0 33 0 28 0 | |||||
| over 4 inch .. .. 35 0 33 0 28 0 | |||||
| seamless, cold finished | |||||
| over under | |||||
| 11/2 and under | 20 0 | ||||
| over 11/2 | 22 0 | ||||
The permitted variations in wall thickness apply only to tube , except internal-upset tubes, as rolled or cold finished
and before swaging,expanding ,bending,polishing,or other fabricating operations
Permitted Variations in Outside Diameter
| outside diameter （mm) | Pemitted Variation( mm) | |
| hot finished seamless tube | over | under |
| 4″ (100mm)and under | 0.4 | 0.8 |
| 4-71/2″(100-200mm） | 0.4 | 1.2 |
| 71/2-9“（200-225） | 0.4 | 1.6 |
| Welded tubes and cold finished seamless tubes | ||
| under1″(25mm) | 0.1 | 0.11 |
| 1-11/2″(25-40mm) | 0.15 | 0.15 |
| 11/2-2″(40-50mm) | 0.2 | 0.2 |
| 2-21/2″(50-65mm) | 0.25 | 0.25 |
| 21/2-3″(65-75mm) | 0.3 | 0.3 |
| 3-4″(75-100mm) | 0.38 | 0.38 |
| 4-71/2″(100-200mm） | 0.38 | 0.64 |
| 71/2-9“（200-225） | 0.38 | 1.14 |
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. Or 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
Product Detail
Boiler Tube
GB/T5310-2017
ASME SA-106/SA-106M-2015
ASTMA210(A210M)-2012
ASME SA-213/SA-213M
ASTM A335/A335M-2018
Product detail pictures:
Related Product Guide:
The really abundant projects management experiences and 1 to just one provider model make the high importance of business enterprise communication and our easy understanding of your expectations for 18 Years Factory Heat Exchangers Pipe - Seamless Alloy Steel Boiler Pipes Superheater alloy pipes Heat Exchanger Tubes – Sanonpipe , The product will supply to all over the world, such as: Durban, Latvia, Philippines, Now, we professionally supplies customers with our main merchandise And our business is not only the "buy" and "sell", but also focus on more. We target to be your loyal supplier and long-term cooperator in China. Now, We hope to be the friends with you.
By Sara from Lesotho - 2017.02.14 13:19
Production management mechanism is completed, quality is guaranteed, high credibility and service let the cooperation is easy, perfect!
By Kelly from Hanover - 2018.11.22 12:28
