butt-welded meaning in English

对接焊接的

Aluminium and aluminium alloy butt - welding pipe fittings
铝及铝合金对焊接管接头
Steel butt - welding pipe fittings for ordinary use
一般用途的钢制对焊管配件
Steel butt - welding pipe fittings ; technical delivery conditions
对焊管接头.交付技术状态
1 steel butt - welding pipe fittings for ordinary use amendment 1
一般用途的钢制对焊管接头
Metal ball valves - flanged and butt - welding ends
对焊和法兰端金属球阀

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