Detailed Product Description

Specification

3-1/8",3-1/2",4-1/8",4-3/4",5",6",6-1/4",6-1/2",6-3/4",7",7-1/4",7-3/4",8",8-1/4",9",9-1/2",9-3/4",

It's  made from rolled or forged AISI4145H chrome-molybdenum steel. The content of chemical composition and microelement is controlled effectively throughout the whole process. According to its different figures and materials, it can be divides into three types:

 Type A (columnar): made from ordinary alloy steel, both inside and outside of the cross section of the pipe are cycloidal.

Type B (spiral): made from ordinary alloy steel, with a spiral chute on the outer surface of the pipe

 Type C (non-magnetic): made from stainless alloy-steel of low magnetic permeability, both inside and outside of the cross section of the pipe are rounded.