ASTM A672 Carbon Steel EFW Weld Pipe
Nickel steel grades: CF 65, CF 70, CF 65, CF 70
Alloy steel grades: CJA 115, CJB 115, CJE 115, CJF 115, CJH 115, CJP 115
Main grades: CL12, CL22, CL23
ASTM A672 Carbon Steel Electrofusion Welded Pipe Product Introduction
ASTM A672 is a standard specification for electrofusion welded steel pipes for medium-temperature and high-pressure applications. The grade indicates the type of steel plate used, while the category indicates the type of heat treatment performed during pipe manufacturing. The category should also indicate whether the welds have undergone radiographic inspection and whether the pipe has undergone pressure testing.
O.D：18"-56"(457.2-1422mm)
W.T：0.312"-2"(7.92-50.8mm)
Length：5-12.3 meter
Application:It is mainly used for oil and gas transportation pipelines.
A672 Pipes Chemical Composition
|
Steel grade |
C max |
Si |
Mn |
P |
S |
|
A45 |
0.17 |
/ |
0.98 |
0.035 |
0.035 |
|
A50 |
0.22 |
/ |
|||
|
CA55/A55 |
0.28 |
/ |
|||
|
B55 |
0.20 |
0.13~0.45 |
|||
|
CB60/B60 |
0.24 |
||||
|
CB65/B65 |
0.28 |
||||
|
CB70/C70 |
0.31 |
1.30 |
|||
|
C55 |
0.18 |
0.55-0.98 |
|||
|
CC60/C60 |
0.21 |
||||
|
CC65/C65 |
0.24 |
0.79-1.30 |
|||
|
CC70/C70 |
0.27 |
Heat Treatment Requirements for Electrofusion Welded (EFW) Steel Pipes (ASTM A672)
According to ASTM A672, all electrofusion welded steel pipes must undergo overall heat treatment after welding and forming, typically using normalizing or annealing processes. This critical process aims to eliminate residual stresses generated during welding and cold working, and to homogenize the grain structure and mechanical properties of the weld, heat-affected zone, and base metal. This ensures that the steel pipe possesses stable and consistent mechanical properties throughout the entire pipe body, not just in the weld area, to meet the safety requirements under medium-temperature and high-pressure conditions.
About our company
We are a professional steel export company dedicated to providing global customers with high-quality steel products and solutions that meet international standards. Our core export products include specialty steels such as ASTM A672 high-voltage electrofusion welded pipes, which are widely used in the energy, petrochemical, and infrastructure sectors.
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