We retain bettering and perfecting our goods and service. At the same time, we perform actively to do research and enhancement for OEM Factory for ASME SA213 T9 T11 T22 Alloy Steel Seamless Tubes, In case you have any reviews about our organization or goods, be sure to experience totally free to speak to us, your coming mail is going to be very appreciated.
We retain bettering and perfecting our goods and service. At the same time, we perform actively to do research and enhancement for
China A213 T9 Carbon Steel Pipe and T12 Seamless Steel Pipe, In the increasingly competitive market, With sincere service high quality solutions and well-deserved reputation, we always offer you customers support on merchandise and techniques to achieve long-term cooperation. Living by quality, development by credit is our eternal pursuit, We firmly believe that after your visit we'll become long-term partners.
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
We retain bettering and perfecting our goods and service. At the same time, we perform actively to do research and enhancement for OEM Factory for ASME SA213 T9 T11 T22 Alloy Steel Seamless Tubes, In case you have any reviews about our organization or goods, be sure to experience totally free to speak to us, your coming mail is going to be very appreciated.
OEM Factory for China A213 T9 Carbon Steel Pipe and T12 Seamless Steel Pipe, In the increasingly competitive market, With sincere service high quality solutions and well-deserved reputation, we always offer you customers support on merchandise and techniques to achieve long-term cooperation. Living by quality, development by credit is our eternal pursuit, We firmly believe that after your visit we'll become long-term partners.