对焊的 meaning in Chinese

butt welded (bw)

Methods of ultrasonic angle beam examination for butt welds of aluminium plates
铝板对焊的超声波斜角束检测方法
Fittings for butt welding into copper - nickel - alloy pipelines - technical specifications
与铜镍合金管对焊的配件.交货技术要求
Pipe joints and elements for polypropylene pressure pipelines , types 1 and 2 ; turned and pressed reducing sockets for butt - welding , dimensions
1型和2型聚丙烯压力管道用管接头和零组件.用于对焊的
Pipe joint assemblies and fittings for types 1 and 2 polypropylene pressure pipes ; tees and branches produced by segment inserts and necking for butt welding ; dimensions
1型和2型聚丙烯压力管道用管接头组件和接头.用对焊的