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Quick Details

Section Shape: Round
Outer Diameter: 1/2-36 inch
Thickness: 2.77-150 mm
Grade: Cr-Mo alloy
Grade: 10CrMo910
Standard: ASTM
Standard: ASTM A213-2001,ASTM A335M-2006
Outer Diameter: 219.1mm
Alloy Or Not: Is Alloy
Special Pipe: Thick Wall Pipe
Surface Treatment:
Certification: API
Technique: Hot Rolled
Application: Boiler Pipe
Secondary Or Not: Is Secondary
Place of Origin: China (Mainland)
Shape: Round
size: 1/2-36inch
seamless steel pipe: alloy pipe
A335: P5.P9,P11,P22,P91

Specifications

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
18to 112, Incl 164 (0.015) 0.4 164(0.015) 0.4
over 112 to 4, Incl. 132(0.031) 0.79 132(0.031) 0.79
over 4 to 8, Incl 116(0.062) 1.59  132(0.031) 0.79
over 8 to 12, Incl.  332(0.093) 2.38 132(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
A335 seamless alloy steel pipe from China famous mills