55°密封管螺纹量规
Gauges for pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads

2019-08-27

55°非密封管螺纹
Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads

2001-02-26

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

2008-06-25

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

60°密封管螺纹
Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads

2011-12-30

80°非密封管螺纹
Pipe threads with 80 degree thread angle where pressure-tight joints are not made on the threads

2013-06-09

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