Welded type hinged pipe connection 焊接式铰接管接头
Welded Type Rack 焊接式货架
expanded and seal welded type 胀管加焊封式
Welded plate type heat exchanger 焊接板式换热器
X type welded joint X型焊缝
D type welded joint D类焊接接头
X type welded bogie frame X型转向架焊接构架
welded plate type 焊接板式
Welded B-Type tubes 焊接B型管
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