55°圆锥管螺纹滚丝轮
Thread rolling cylindrical dies for taper pipe threads with 55° thread angle
2013-04-25
JB/T 8364.4-2010
60°圆锥管螺纹刀具 第4部分:60°圆锥管螺纹搓丝板
Tools for taper pipe threads with 60°thread angle-Part 4:Thread rolling flat dies for taper pipe threads with 60°thread angle
2010-02-11
JB/T 8364.5-2010
60°圆锥管螺纹刀具 第5部分：60°圆锥管螺纹滚丝轮
Tools for taper pipe threads with 60°thread angle. Part 5:Thread rolling cylindrical dies for taper pipe threads with 60°deg.thread angle
2010-02-21
GB/T 7306.2-2000
55°密封管螺纹 第2部分:圆锥内螺纹与圆锥外螺纹
Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads--Part 2:Taper internal and external threads
2000-07-24
GB/T 7306.1-2000
55°密封管螺纹 第1部分:圆柱内螺纹与圆锥外螺纹
Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads--Part 1:Parallel internal and taper external threads
2000-07-24
GB/T 22091.1-2008
55°密封管螺纹量规 第1部分：用于检验圆柱内螺纹与圆锥外螺纹
Gauges for pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 1:Verification of parallel internal and taper external threads