What are the pressure test algorithm procedures for commonly used national standard seamless steel pipes?

The national standard seamless steel pipe is used for manufacturing and construction. It is a tense example of steel pipes. Seamless steel pipes are used in manufacturing and construction to hold part -time jobs.What is the result of seamless steel pipe pressure? How to hold the resistance of the seamless steel pipe? There are many formulas and skills, or with friends to take a look at the resistance of seamless steel pipes to the resistance of the seamless steel pipes along the wayBreaking skills: 1: Known seamless pipe seamless steel pipe outer diameter specifications of the wall thickness and ability to be affordable (the difference between the tensile strength of the steel pipe differential material) pressure  (wall thickness*2*national standard seamless steel pipe resistance resistancePull intensity)/(outer diameter*coefficient) 2: Known seamless pipe seamless steel pipe outer diameter and accepted pressure map wall thickness scores: wall thickness  (pressure*outer diameter*coefficient)/(2*steel pipe material material pipe anti -tensile tensileStrength) 3: National standard seamless steel pipe pressure factor exposure skills: pressure  lt; 7MPa coefficient s  8 7 lt; steel pipe pressure P  lt; 17.5 coefficient s 6 pressure P  gt; 17.5 coefficient s