JB/T 3878.7-1985 插入焊接式管接头

中华人民共和国机械工业部部标准3878。7-85插入焊接式管封头本标准规定了插入焊接式管封头,适用于油、气为介质的管路系统。标记示例:管子外径D为28mm的插入焊接式管封头:管封头28JB3878.7-85公称压力钢管外径重量barD。0,50.4kg1818,53812220.1702020.54013230.1922222.5432502402625.54615260,2782828.5162703203232554280990171603535.55920.4874040.5650.62031424250.6805050.520340.96763649322371.408761132442241390913026463,420技术条件按JB38788-85的规定。机械工业部1985-020发布1985-07-01实施448