A252 GR3 LSAW Steel Pipe

ASTM A252 GR3 pipe piles are round welded pipes. With a tensile strength of 60,000 psi and a yield strength of 45,000 psi, ASTM A252 Grade 3 pipe piles are suitable for bearing loads and withstanding pressure, making them commonly used as pipe piles. GNEE Group specialises in producing high-strength, pressure-resistant A252 GR3 pipe piles. Our A252 GR3 welded pipes have been exported to over 150 countries and regions, including Mexico, Australia, Yemen, and Chile. GNEE Group can also supply A252 GR3 longitudinal submerged arc welded pipes, A252 GR3 spiral welded pipes, A252 GR3 anti-corrosion pipes, and A252 GR3 structural pipes. For more information, please feel free to contact us.

Grades	1, 2, and 3
Dimensions	Up to 48 inch welded
Types	SAWL, LSAW, SSAW, HSAW
Thickness	Schedule STD, 40, XS, 80, XXS, 160
Length	6m, 12m or customized.
Ends	Beveled, Plain
Coatings Treatment	FBE, 3PE, Galvanized
Test	Ultimate tensile strength test, Yield strength test, Elongation test, etc.

Tensile Measurements for ASTM A252 Grade 3 Pipes

Grade	Yield Point	Min. Elongation at 2°	Tensile Strength	Min. Elongation at 8°
3	45000 psi	20%	66000 psi	…

A252 GR3 Welded Steel Pipe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GNEE A252 Welded Line Pipe Manufacturing Process

When the A252 GR3 steel plate, intended for the production of large-diameter longitudinal submerged arc welded steel pipes, is put into the production line, it first undergoes a full-plate ultrasonic inspection. Then, a milling machine is used to perform double-sided milling on the two edges of the A252 GR3 steel plate, ensuring that the edges achieve the desired plate width, edge parallelism, and bevel shape. Next, the equipment is used to work on the plate edges to achieve the required curvature.

The steel plate is then formed using a JCO forming machine, where one half of the pre-bent steel plate is subjected to multiple stepwise pressings to form a J shape. The other half is similarly press-formed into a C shape, ultimately forming an open O shape.

The formed A252 GR3 longitudinal welded steel pipe is then joined and continuously welded using gas metal arc welding (MAG). Longitudinal multi-wire submerged arc welding (up to four wires) is used to weld the inside of the A252 GR3 longitudinal welded steel pipe, and the same method is used to weld the outside of the longitudinal submerged arc welded steel pipe. Upon completion of the welding, the pipe undergoes the first ultrasonic inspection (primarily checking the weld and the base material on both sides), the first X-ray inspection (to ensure the sensitivity of the flaw detection), expansion, and hydrostatic testing (with the hydrostatic testing equipment automatically saving the records).

The qualified A252 GR3 steel pipe is then processed to meet the required dimensions, followed by a second ultrasonic inspection, a second X-ray inspection, magnetic particle inspection of the pipe ends, anti-corrosion treatment, and coating, completing the entire processing procedure.

GNEE Pipe Test

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