Hydraulic pillar pipe

"standard

GB/T 17396 Chinese National Standard

"use

The cylinders and columns of coal mine hydraulic supports and pillars can also be used for other hydraulic cylinders and columns.

》Production specifications and materials

Specifications: 20--356×4--70

Material: 20, 35, 45, 27SiMn, 30MnNbRE

》Steel pipe manufacturing method:

Hot rolling

"delivery status:

Pipes delivered in hot rolled condition