大直径

• Large diameter steel flanges , nps 26 through nps 60
  大直径钢法兰nps 26至60
• Design and construction of large diameter excavation stakes
  大直径挖孔桩的设计与施工
• Design of big intersecting circle flame cutting machine
  大直径开孔数控火焰切割机的研制
• Specification for large - diameter fabricated carbon steel flanges
  大直径机加碳钢法兰规范
• Study on large - diameter longhole blasting of underground mining
  地下采矿大直径深孔爆破研究
• Major diameter welded steel pipe for lowpressure liquid service
  低压流体输送用大直径电焊钢管
• A new method of pre - tightening for king diameter coupling bolt
  大直径联接螺栓预紧的一种新方法
• Large borehole methane drainage technology
  大直径钻孔瓦斯抽放技术
• Standard specification for large - diameter fabricated carbon steel flanges
  大直径制造的碳钢法兰
• Washers , flat , large diameter , in heat resisting steel , passivated
  钝化耐高温钢的大直径扁平垫圈