焊管

• Steel butt - welding pipe fittings
  钢制对焊管配件
• Steel but - welding pipe fitting
  钢制对焊管件
• Continuous butt weld mill
  连续式炉焊管机组
• Specification for general requirements for nickel and nickel alloy seamless and welded tube
  镍和镍合金无缝和焊管规范
• Specification for general requirements for nickel and nickel alloy seamless and welded pipe
  镍和镍合金无缝和焊管规范
• Hanguan , sports equipment , hardware , bicycle parts processing and marketing
  焊管、运动器材、五金、自行车零件加工、销售。
• Hf hanguan , chairs accessories ( except wood products ) for processing , marketing
  高频焊管，转椅配件（除木制品）加工，销售。
• Mag welding flux cored wires for molybdenum steel and chromium molybdenum steel
  钼钢及铬钼钢金属极活性气体保护电弧焊管状焊丝
• Study on residual stress inspection of straight - line welded thick steel tube with large diameter
  大口径厚壁埋弧直缝焊管内应力检测研究
• Analysis of the present competitive structure of the electric resistance welding market in china
  我国直缝焊管市场现阶段的竞争结构分析