GB/T5626.1-1985GB/T5626.1-1985扩口式锥螺纹直通管接头嘉定区
面议GB/T5626.1-1985GB/T5626.1-1985扩口式锥螺纹直通管接头嘉定区
面议GB/T5625.1-1985GB/T5625.1-1985扩口式端直通管接头嘉定区
面议GB/T3750.1-1983GB/T3750.1-1983卡套式铰接管接头嘉定区
面议GB/T3749.1-1983GB/T3749.1-1983卡套式隔壁直角接头嘉定区
面议GB/T3748.1-1983GB/T3748.1-1983卡套式隔壁直通管接头嘉定区
面议GB/T3747.1-1983GB/T3747.1-1983卡套式焊接管接头嘉定区
面议GB/T3746.1-1983GB/T3746.1-1983卡套式四通管接头嘉定区
面议GB/T3745.1-1983GB/T3745.1-1983卡套式三通管接头嘉定区
面议GB/T3744.1-1983GB/T3744.1-1983卡套式锥螺纹直角三通管接头嘉定区
面议GB/T3743.1-1983GB/T3743.1-1983卡套式端直角三通管接头嘉定区
面议GB/T3742.1-1983GB/T3742.1-1983卡套式锥螺纹三通管接头嘉定区
面议GB/T3741.1-1983GB/T3741.1-1983卡套式端三通管接头嘉定区
面议