焊管

• Forged steel socket welding pipe fittings
  锻钢制承插焊管件
• Copper - coated steel strips for welded pipe
  焊管用镀铜钢带
• Application of gqdc - 1 type digit control rular in welding - pipe production
  1型数控定尺在焊管生产中的应用
• Steel plate butt - welding pipe fittings
  钢板制对焊管配件
• Specification for design of steel buttwelding fittings for oil gas pipeline
  油气管道钢制对焊管件设计规程
• Aluminium and aluminium alloys - hf seam welded tubes - mechanical properties
  铝和铝合金. hf缝焊管.机械特性
• Forged steel socket - welded fittings
  锻钢制承插焊管件
• High frequency induction heating equipment used in on - line tube seam annealing unit
  焊管用单管高频感应加热设备
• Steel plate butt - welded fittings
  钢板制对焊管件
• Butt welding fittings - elbows - part 2 : full correlation of utilization
  对焊管件.弯管.第2部分:全利用率的相关性