gas welded joint 气焊接头 ; 气焰焊接头
gas-welded pipe 气焊管
Joint gas welded 气焰焊接头
gas welded pipe 气焊管
the gas welded cylinder steel 焊接气瓶用钢
metal inert-gas welded joints MIG焊接头
welded gas cylinder 焊接气瓶
Welded steel gas cylinders 钢质焊接气瓶
welded liquefied petroleum gas cylinder 焊接式液化石油气瓶 ; 烧焊式液化石油气瓶
So it has to be refined, forged, welded, and cast in a vacuum or under inert gas, an expensive process.
因此，钛的熔炼需要发生在真空中或者惰性气氛之中，也正因为此，熔炼过程很昂贵。
Containers, pipes and tanks which used to fill with flammable gas, liquid without cleaning and measuring, should not be welded and scalpeled.
盛装过可燃、易燃气体、液体的各种容器、管道、罐柜等，未经清洗和测爆，没有安全保障时，不准焊、割。
Alloy steel, completely welded, oil-proof, waterproof and anti-corrosive gas and medium, suitable for all kinds of environments.
合金钢材料，全密封焊接，防油、防水、防一般腐蚀性气体及介质，可适用于各种环境。
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