金属导管严禁对口熔焊连接。
综述了近年来国内外镁合金在熔焊连接和固相连接两方面的研究现状与进展。
The research status of welding of magnesium alloys by fusion welding and solid - phase joining at home and abroad is summarized.
金属导管严禁对口熔焊连接，镀锌或壁厚小于等于2毫米钢导管不得套管连接；
Butt fusion connection is banned for metallic conduit, and bush connection is banned for galvanized steel conduit, or steel conduit with wall thickness of 2 mm and below;
应用推荐