标 准 号：DIN 3852-2-2000 简体中文标题：管件和阀门用管堵和螺纹孔.带惠氏管螺纹的螺塞.各类的总成本 繁体中文标题：管件和阀门用管堵和螺纹孔.带惠氏管螺纹的螺塞.各类的总成本 English Name：Stud ends, ports, for fittings, valves - Plug screw with Whitworth pipe thread - General outlay of types...