Our concentrate on should be to consolidate and enhance the quality and service of present products, meanwhile consistently produce new products to meet unique customers' demands for Popular Design for Supplier A355 P9 P11 4130 42CrMo 15CrMo Alloy Carbon Steel Pipe St37 C45 Sch40 A106 Gr. B A53 Seamless Steel Pipe, We often stick with the principle of "Integrity, Efficiency, Innovation and Win-Win business". Welcome to visit our web page and don't hesitate to communicate with us. Are you prepared? ? ? Let us go!!!
Our concentrate on should be to consolidate and enhance the quality and service of present products, meanwhile consistently produce new products to meet unique customers' demands for
China Steel Pipe and Steel Tube, We supply skilled service, prompt reply, timely delivery, excellent quality and best price to our customers. Satisfaction and good credit to every customer is our priority. We focus on every detail of order processing for customers till they have received safe and sound items with good logistics service and economical cost. Depending on this, our products and solutions are sold very well in the countries in Africa, the Mid-East and Southeast Asia. Adhering to the business philosophy of ??customer first, forge ahead', we sincerely welcome clients from at home and abroad to cooperate with us.
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
Main Grade
Grade of high-quality alloy pipe :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
Video
Boiler Tube
Our concentrate on should be to consolidate and enhance the quality and service of present products, meanwhile consistently produce new products to meet unique customers' demands for Popular Design for Supplier A355 P9 P11 4130 42CrMo 15CrMo Alloy Carbon Steel Pipe St37 C45 Sch40 A106 Gr. B A53 Seamless Steel Pipe, We often stick with the principle of "Integrity, Efficiency, Innovation and Win-Win business". Welcome to visit our web page and don't hesitate to communicate with us. Are you prepared? ? ? Let us go!!!
Popular Design for China Steel Pipe and Steel Tube, We supply skilled service, prompt reply, timely delivery, excellent quality and best price to our customers. Satisfaction and good credit to every customer is our priority. We focus on every detail of order processing for customers till they have received safe and sound items with good logistics service and economical cost. Depending on this, our products and solutions are sold very well in the countries in Africa, the Mid-East and Southeast Asia. Adhering to the business philosophy of ??customer first, forge ahead', we sincerely welcome clients from at home and abroad to cooperate with us.
China Steel Pipe and Steel Tube
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