Usage

Dimension

Steel Grade

Standard/
Specification

Application Fields  

OD(mm)

WT(mm)

Structural Pipe

42～760

4～120

20#,35#,45#,Q345A/B/C/D,Q390,
Q420,25Mn,27SiMn etc.

GB/T 8162

General structural and mechanical pipe

Vehicle Pipe

45～245

4～35

20Mn2,SAE1527,MZ410R,
MZ530R,30Mn2,40Cr,45Mn2 etc.

Technical agreement, YB/T5035

Pipe used for automobile axle and automobile semi-shaft

Mold Pipe &Tube

DN200～DN1200

21CrMo10,21CrMo10-2 etc.

Q/OHAD030, technical agreement

Centrifugal graphite casting-iron pipe
mold

Military Pipe

42～760

4～120

30Cr,40Cr,35CrNi1MoA etc.

National military standard, agreement

Pipe for military use

Geology Drilling
Pipe &Tube

42～133

4～25

DZ40,DZ55,STM-R780,DZ60 etc.

Q/OHAD006, GB/T 9808, agreement

Drilling pipe

Hydraulic Support Pipe

42～760

4～120

20#,35#,45#,27SiMn,30MnNbRE,
30CrMnSi,30CrMnSiA etc.

GB/T 17396, technical agreement

Making hydraulic equipment for coal mine exploitation and hydraulic cylinder and piston for truck crane

Fluid Transmission Pipe & Tube

42～760

4～120

20#,Q345,Q390 etc.

GB/T 8163, technical agreement

Pipe & tube used for fluid transmission