What’s materials applied for GEI-219 tube making?
The ERW219 tube applicable materials is carbon steel Q195, Q235, 16Mn and other hot and cold rolled steel strip (meet the standard of GB700-88，GB1591-88 or API-5L)
The ERW219 tube applicable materials is carbon steel Q195, Q235, 16Mn and other hot and cold rolled steel strip (meet the standard of GB700-88，GB1591-88 or API-5L)
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