Thread dimensional specifications, minimum wall thickness and burst pressure, material classification, and requirements for marking identification were stipulated.
螺纹尺寸规格说明，最小壁厚和爆裂压力，材料分类，以及规定的标记标识的要求等。
2
Dimensions, thread gaging, minimum wall thickness and burst pressure, material classification, various quality aspects and requirements for marking identification are stipulated.