LSAW steel pipe physical tolerance

Date:2024-05-31

The physical tolerances for LSAW (Longitudinal Submerged Arc Welding) steel pipes are critical to ensure the pipes meet the required specifications and performance standards. These tolerances typically cover dimensions such as outside diameter, wall thickness, length, and straightness.API 5L has a clear requirement on the physical tolerance for manufacturing LSAW Steel Pipes. Here are the standard tolerances for LSAW steel pipes.

Tolerance of Outside Diameter

Standard	Out Diameter	Tolerance of Pipe End	Tolerance of Pipe Body
API 5L	219.1～273.1	+1.6mm, -0.4mm	±0.75%
	274.0～320	+2.4mm, -0.8mm	±0.75%
	323.9～457	+2.4mm, -0.8mm	±0.75%
	508	+2.4mm, -0.8mm	±0.75%
	559～610	+2.4mm, -0.8mm	±0.75%

Tolerance of Wall Thickness

Standard	Grade	Out Diameter	Wall Thickness
API 5L	A	219.1～457	+15%, -12.5%
	B	508～610	+17.5%, -12.5%
	X42-X80	508～610	+19.5%, -8%

Continental Steel only supply the API LSAW Steel Pipe strictly accordance with the standard, our invested factory is API and ISO qualified.If you have any request, please contact at:sales@continental-steel.com