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Eight national standards for pipe connection in stainless steel pipe fittings
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1 GB/T1415-1992 米制錐螺紋
2 GB/T7306.1～.2-2000 用螺紋密封的管螺紋
3 GB/T7307-2001 非螺紋密封的管螺紋
4 GB/T12716-2002 60o密封管螺紋
5 GB/T985-1988 氣焊、手工電弧焊及氣體保護焊焊縫坡口的基本形式與尺寸
6 GB/T986-1988 埋弧焊焊縫坡口的基本形式和尺寸
7 GB/T324-1988 焊縫符號表示法
8 HG/T3204-1981不銹鋼管件石墨管螺紋系列
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