Steel pipes/Tube pilings/Accessories
01
Longitudinal welded pipes
Products Introduction
Longitudinal welded steel pipes which are typically classified based on the materials they are made from, their intended use, and the standards they adhere to. Normally, the longitudinal welded steel pipes which refer to the common standards and classifications for Submerged-Arc Welded Steel Pipes.
Material standards:
Longitudinal welded steel pipes can be classified based on the material they are made of, such as carbon steel, stainless steel, alloy steel, etc. Each material type with its own set of standards and specifications.
Manufacturing standards:
The manufacturing process of Submerged-Arc Welded Steel Pipes can follow the specific standards set by organizations such as the American Petroleum Institute (API), the American Society for Testing and Materials (ASTM), or other national or international standards organizations as follows: API 5L, API 5CT, ASTM 53, EN10217, DIN 2458, IS 3589, GB/T3091, GB/T9711,EN10217, EN10219
Process:
LSAW – UO(UOE)、RB(RBE)、JCO(JCOE)
DSAW -Double Submerged arc welded
Out Diameter: 355.6mm– 1626mm
Wall Thickness: 8 -50mm
Length: up to 12m
Steel Grade:
API 5L: GR B, X42,X46, X56, X60,X65,X70
ASTM A53: GR A, GR B, GR C
EN: S275, S275JR, S355JRH, S355J2H
GB: Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360- L555
Surface: Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement
Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.
Mill Test Certificate: EN 10204/3.1B
Application Criteria: Longitudinal welded pipes can also be classified based on its intended use, such as oil and gas pipelines, structural applications, or general industrial use. Be sure to refer to the specific standards and classifications relevant to your specific requirements, as they may vary based on industry and region.
API 5L Line Pipe: API 5L PSL1/PSL2 GR B , X42, X46, X52, X60, X65, X70
MECHANICAL PROPERTIES AND STEEL CHEMICAL COMPOSITION
|
STEEL GRADE |
Yield strength, min. psi (MPa) |
Tensil strength, min. psi (MPa) |
Elongation in 2 in., min. % |
|
GR B |
245 |
415 |
|
|
X42 |
290 |
415 |
|
|
X46 |
320 |
435 |
|
|
X52 |
360 |
460 |
|
|
X56 |
390 |
490 |
|
|
X60 |
415 |
520 |
|
|
X65 |
450 |
535 |
|
|
X70 |
485 |
570 |
|
STEEL GRADE |
% by mass, Maximum |
||||
|
C |
Si |
Mn |
P |
S |
|
|
GR B |
0.26 |
0.40 |
1.20 |
0.030 |
0.030 |
|
X42 |
0.26 |
0.40 |
1.30 |
0.030 |
0.030 |
|
X46 |
0.26 |
0.40 |
1.40 |
0.030 |
0.030 |
|
X52 |
0.26 |
0.40 |
1.40 |
0.030 |
0.030 |
|
X56 |
0.26 |
0.40 |
1.40 |
0.030 |
0.030 |
|
X60 |
0.26 |
0.40 |
1.40 |
0.030 |
0.030 |
|
X65 |
0.26 |
0.40 |
1.45 |
0.030 |
0.030 |
|
X70 |
0.26 |
0.40 |
1.65 |
0.030 |
0.030 |
STEEL PIPES AS PER ASTM A53 GR. B:
MECHANICAL PROPERTIES AND STEEL CHEMICAL COMPOSITION
|
STEEL GRADE |
Composition Max, % |
||||||||
|
C |
Mn |
P |
S |
Cu |
Ni |
Cr |
Mo |
V |
|
| GR B |
0.30 |
1.20 |
0.05 |
0.05 |
0.40 |
0.40 |
0.40 |
0.15 |
0.08 |
Workshops and Production Equipment
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