1、UDC621.643.4B中华人民共和国国家标准GB5638.1-85扩口式组合三通管接头Flared type tube fittings-Swivel branch tee-Assembly1985-11-25发布1986-09-01实施国家标准局批准GB5638.1-85管子外径Dd9S质量（钢）kg/100件smm5.01M0125.524.57.56.51513133.55.026M121.529.528.59.57.517.317.31515108.258M14X1.535.58.520.820.818181112.433.508M161.537.524.224.2212117.1
2、10.5161210M181.53836.59.527.727.7242421.31412M221.539.538.531.231.22729.21614M241.541.535.3111034.634.6303024185M271.54341.540.52017M3025047.513.510.5白63.841,641.638362219M33X253511411.53072.72522M362555314.5e47.347.33487.1282以M39258.556151353.153.1464636115.03227M42258.515.513.5133.057.757.750503430M45262.560.51446135.0注：对边尺寸为S,的锁紧螺钻构及其与接头体的连接方法由制造厂决定，但图示尺寸应符合上表的规定，并且该螺母应能在接头休上自由转动。技术条件按GB5653一85扩口式管接头技术条件的规定。
