No.

product name

size(mm)

od*wt

steel grade

standard

1

Seamless hot rolled steel tubes for hydraulic pillar service

102-630*4-40*<=12000

20,45,27SiMn,30MnNbRe

GB/T17396

2

Carbon and carbon-manganese steel seamless tubes and pipes for ship

102-630*4-40*<=12000

320,410

LR, CCS, DNV, GL, ABS, GB/T5312

3

Seamless steel pipes for gas cylinder

102-630*4-40*<=1200

42Mn2, 35CrMo

GB18248

4

seamless Steel Pipe For Geological Drill In

102-630*4-40*<=12000

DZ40-75

YB235

5

Seamless steel pipes for high pressure chemical fertilizer

102-630*4-40*<=12000

10,20,12CrMo,16MnV,12SiMoVNb

GB6479