Welding Black Iron Pipeline

Description

Commodity name Best selling 3 inch erw black
welded iron steel pipe weight
Out diameter: *******0mm
Thickness: *0mm***0mm
Length: **6 meter/pc
Producing Standard: ASTM A*3; EN*********6; GB/*********8;
GB/********8,GB/***1 or according to technical protocol
Main Material: ASTM A *3, A**6; Q***-Q**5, *0#,
Q**5, Q**5 (B, C), L***-L**5 (A, B, X**-X*0),
J*5, K*5, N*0, L*0, C*0, C*5, P**0 etc
Technology: SSAW (Spiral Submerged Arc Welding)

Product Details

Welding Black Iron Pipeline With the development of national economy, especially the development of the western region and the implementation of the west-east gas transmission project, the demand for large-diameter high-frequency induction direct-seam welded steel pipes is increasing

Brief Introduction

Welding Black Iron Pipeline

With the development of Welding Black Iron Pipeline national economy, especially the development of the western region and the implementation of the west-east gas transmission project, the demand for large-diameter high-frequency induction direct-seam welded steel pipes is increasing, and the application field of weld annealing is also gradually expanding. As one of the deep processing of large-diameter steel pipes, weld annealing technology has been paid more and more attention.High strength thin - walled steel pipe can be produced by weld annealing.Weld online dynamic is the induction heating coil annealing equipment as the main components of continuous tube welding machine, the welding and has just above its critical temperature quenching of weld heat, for steel pipe welding seam annealing in order to prevent the potential weld crack, the resulting fine grained organization guarantee satisfied all the standard specifications of the strong steel pipe.

The dynamic annealing of the welding seam of steel tube can be carried out in two ways: one is the overall annealing. Because the whole steel tube needs to be heated to above the critical temperature, the annealing power is very large, so the overall annealing mode is only suitable for small diameter steel tube.Another kind is done directly by plane sensor weld annealing, due to the heating heat concentrated on weld width is about 4 times, within the scope of the heating power is small, so need weld annealing cost is low, due to the rapid local heating of the weld seam at the same time, make steel tube oxidation and deformation are minimal, accurate and consistent diathermy also makes the entire weld area are fine grained organization, so as to achieve the requirements of the annealing process, improve weld pipe comprehensive mechanical properties, improve the service life of the welded pipe.