Seamless Steel Pipe for Gas Cylinder

We use 37Mn, 34Mn2V, 35CrMo and other grades of steel to produce gas cylinder steel tubes. Basic length of seamless steel pipe for gas cylinder is between 4000 mm to 12000 mm. Iwowwee is also capable to produce steel pipes longer than 12000 mm or shorter than 4000 mm but aren't quite shorter than 3000 millimeters.

This should be marked out in the contract after negotiated by the two parties. The amount of steel tubes shorter than 4000 mm should not exceed five percent of your total number of delivered seamless steel pipe for gas cylinder. The two end surface should be perpendicular to the steel pipe axis. The cutting burrs should be took off.

  • Standards JIS G3429 standard is typically applicable for gas cylinder steel tubing. We can manufacture the following grade of seamless steel pipe for gas cylinder: 37Mn, 34Mn2V, 30CrMo, 35CrMo, STH11, STH12, STH21, STH22, or anything else.
  • Manufacturing TechnologyWe adopt hot rolling (hot expanding) or cold rolling (cold drawing) to produce gas cylinder steel replacements.
  • ApplicationsThis steel tube is mainly appeared to make different associated with gas cylinders, hydraulic cylinders and other high pressure cylinders. Seamless steel pipe for gas cylinder can also be applicable for Gas main Vehicle (NGV) cylinders, Compressed Natural Gas (CNG) trailers, transportation and storage of compressed hydrogen, as well as technical gases, and also scuba diving and fire extinguisher

Advantages

  • JST seamless steel pipe for gas cylinder has good surface quality. There does not visible crack, wrinkling, abscission layer and rolling skin (scarring).
  • Inside of production process, there always exist some surface quality defects, regarding flaw, scar, laceration, rolling burr other people. We possess UNICORN ultrasonic joint inspection machine, automatic ultrasonic testing machine and magnetic flux leakage testing host. They are used for detecting obvious surface defects of gas cylinder steel tubes.
  • Iwowwee also employs professional inspection personnel may detect the unobvious inner and outer surface defects on the seamless steel pipe for gas tank. If find any flaw, they will be sufficient polishing, removal, repair too series of processes in keeping with relevant regulations.
  • Delivery StatusHot-rolled steel tubes are delivered in hot-rolled state while cold-rolled steel pipes are delivered in cold-rolled, normalizing or annealing state.
  • Specifications of Seamless Steel Pipe for Gas Cylinder

Dimension Deviation

Manufacturing Method Size Range Allowable Outside Diameter Deviation (%) Allowable Wall Thickness Deviation (%)
General Class High Class
Hot Rolling (Hot Expanding) D < 339.7 mm ± 1 + 12.5 - 10 ± 10
D ≥ 339.7 mm + 15 - 12.5 + 12.5 - 10
Cold Rolling (Cold Drawing) Total ± 0.75 ± 10 ± 7.5
Manufacturing Method Size Range Allowable Outside Diameter Deviation (%) Min. Allowable Wall Thickness Deviation (%)
General Class High Class
Hot Rolling (Hot Expanding) D< 339.7 mm ± 1 +25 0 +22.5 0
D ≥ 339.7 mm +30 0 +25 0
Cold Rolling (Cold Drawing) Total ± 0.75 +22.5 0 +15 0

 

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