Steel plate butt-welding pipe fittings 钢板制对焊管件 ; 钢板制对焊管配件
Butt-Welding Pipe Fittings 对焊管配件
Steel butt-welding pipe fittings 钢制对焊管件
Steel plant butt-welding pipe fittings 钢板制对焊管件
Universal steel butt-welding pipe fittings 通用钢制对焊管件
Steel butt-welding seamless pipe fittings 钢制对焊无缝管件
When ordering Butt Welding End valves, specify schedule of pipe end and give complete data concerning style, figure number and contour of weld end.
在订购对焊连接阀门时，要指定管道连接端口的管壁厚度，并且提供有关类型、型号和焊接端等高线等参数。
When ordering other than standard Butt Welding end valves, specify schedule of pipe end and give complete data concerning style, figure number and contour of weld end.
如果订购其它标准的对焊连接的阀门，请告知管道管壁厚度标准，以及种类、型号和焊接端轮廓等参数。
The key of Cu-Al pipe butt welding is to control the welding parameters. In the original control system, all welding parameters were controlled by time-relays.
铜铝管焊接的关键是对焊接参数的控制，原控制系统采用时间继电器控制焊接参数。
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