ASTM A691 China JCOE LSAW Electric Fusion Welded Carbon and Alloy Steel Pipes for High Pressure Service at High Temperatures
Products Description:
Pipe Grade and Material Used:
ASTMA691 1/2CR (0.5%Cr,0.5%Mo) Related Material Used: ASTM A387 GR.2
ASTMA691 1CR (1%Cr,0.5%Mo) Related Material Used: ASTM A387 GR.12
ASTMA691 1 1/4CR (1.25 %Cr,0.5%Mo) Related Material Used: ASTM A387 GR.11
ASTMA691 2 1/4CR (2.25 %Cr,1%Mo) Related Material Used: ASTM A387 GR.22
Commonly used forPressure Vessels at High Temperature and High Pressure requirements.
ASTM A691 Class Designation:
Class | Heat Treatment on Pipe | Radiography, | Pressure Test, |
10 | none | none | none |
11 | none | 9 | none |
12 | none | 9 | 8.3 |
20 | stress relieved | none | none |
21 | stress relieved | 9 | none |
22 | stress relieved | 9 | 8.3 |
23 | stress relieved | none | 8.3 |
30 | normalized | none | none |
31 | normalized | 9 | none |
32 | normalized | 9 | 8.3 |
33 | normalized | none | 8.3 |
40 | normalized and tempered | none | none |
41 | normalized and tempered | 9 | none |
42 | normalized and tempered | 9 | 8.3 |
43 | normalized and tempered | none | 8.3 |
manufacture Technique:Hot Rolled, Hot Rolled Surface Treatment:Galvanized Alloy Or Not:Is Alloy Standard: ASTM A335 Steel Grade: P11, P12, P2, P22, P5, P9, P91, P92 Size: 21.3-610mm OD 1-50mm WT, 3-26M length ...