Main Type of Steel

Crane Boom Pipe: BJ450, BJ770, BJ890

Rotary Drill Pipe: Q345B, 27SiMn, 30CrMo, 35CrMo, 42CrMo

Pipe for Hydraulic Cylinder: 20#, 25#, 35#, 45#, 30Mn2, 27SiMn,30CrMnSiA, 30CrMoA, 20MnTiB, S700, S890, Q345, E355, E470

Production Standard

Crane Boom Pipe: GB/T 30584 《Seamless steel pipe for crane jib》

Rotary Drill Pipe: GB/T 34109 《Seamless steel tubes for drill rod of rotary digging machine》

Pipe for Hydraulic Cylinder:

GB/T 8162 《Seamless steel tubes for structural purposes》

GB/T 699 《Quality carbon structure steels》

GB/T 3077 《Alloy structure steel》

GB/T 17396 《Hot-rolled seamless steel tubes

EN10210-1《Hot finished structural hollow sections of non-alloy and fine》

EN10297-1 《Seamless circular steel tubes for mechanical and general engineering purposes》

EN10305-1《Steel tubes for precision applications-Part 1:Seamless cold drawn tubes》

Dimension

Small Diameter Precision: OD Φ10-180mm,WT 1-15mm,Length 3-12.5m

Large OD and Thin Wall: OD Φ323.8-720mm,WT 6.35-40mm,Length 6-14m