pelapisan bimetal siku weld, Dipenuhi siku Kaedah untuk pemprosesan
Rabu, 12 September 2018
oleh admin
Summary The invention relates to the field of natural gas transmission pipeline equipment technology, khususnya kepada kaedah pemprosesan logam double berpakaian siku weld. The utility model is characterized in that the carbon steel outer layer of the elbow and the inner layer of the nickel base steel plate are pressed into
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