2003年 8月16日 星期二
 
 
 
Manufacture Standard
Manufacture Parameter
  Flanges
 
  Unions of socket-Welding & Threaded
　
  Socket Welding Reducer Inserts
　
  Socket Welding Fittings
 
  Butt-Welding Caps
 
  Butt-Welding Tees and Crosses
 
  Butt-welding Concentric and Eccentric Reducers
 
  Butt-welding Elbows and Returns
 
  Lap Joint Stub Ends
 
  Threaded Fittings
 
  Bend pipes
 
  Wall Thicknesses Schedule GB 12459、GB/T 13401
 
  Outside Diameter and Wall Thickness
 
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