34CrMo Seamless Steel Pipe For Gas Cylinder Pipe

Steel gas cylinders are manufacturing special steel cylinders. Requirements are usually smaller carbon content, strictly control the sulphur and phosphorus contents, meet the strength at the same time, good toughness and impact energy. 100% non-destructive testing.

The seamless tubes shall be used for the manufacturing of refillable seamless steel quench & tempered gas cylinder with actual maximum tensile strength less than 1100Mpa. Since the gas cylinders are manufactured by hot spinning process the steel grade used shall be compatible for the manufacturing of high pressure gas cylinders.


  • Name: 34CrMo Seamless Steel Pipe For Gas Cylinder Pipe
  • Standards: GB18248 – 2000
  • OD: Φ50-325mm; wall thickness: 3-55mm;
  • OD tolerance: ±0.75%;
  • Wall margin: -10%—+12.5%
  • Transverse slope: ≤2mm;
  • Straightness: 1mm/1m;
  • Inside diameter roundness: no more than 80% of the OD diameter tolerance
  • Surface quality: without crack, folding, delamination and stammer
  • Product Categories: Seamless steel tubes for high pressure vessels
  • Usages: For all kinds of fuel, hydraulic, trailer, station with gas bottle
  • Steel Grade: 34CrMo4、30CrMo、34Mn2V、35CrMo、37Mn、16Mn

a. Should meet: V+Nb+Ti+B+Zr≤0.15%。
b. Depending on the requirements, consultation by both supply and demand, and noted in the contract to meet the S≤0.010%,P+S≤0.025%。