Since different trades have different rules of intersecting angle in pipe joints, this article gives expression when the rules are as follows: AWS, API, and unaltered intersecting angle.

• 本文针对各个行业对管切割中坡口要求的不同,给出了上述管切割类型在不开坡口、开定角度玻口、AWS和API焊接坡口规则下,坡口角和切割角的表达式。