tee welding 中文意思是什麼
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Pipe joints and elements for high density polyethylene pressure pipelines, types 1 and 2 ; injection moulded tee pieces for socket - welding, dimensions
1型和2型高密度聚乙烯壓力管道用管子接頭與零件.承插 -
Pipe joints and elements for polypropylene pressure pipelines, types 1 and 2 ; injection moulded tee pieces for socket - welding, dimensions
1型和2型聚丙烯壓力管道用管接頭和零組件.承插焊接用
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