The working principle of Shangyi clamp type pipe fittings is to insert the thin-walled stainless steel pipe into the socket of clamp type pipe fittings, and clamp the stainless steel pipe in the pipe fittings with special clamp tools. The section shape of the clamp position is hexagonal. In addition, there is a 0-ring seal between the stainless steel pipe and the pipe fittings, which makes it have the characteristics of anti leakage, anti drawing, anti vibration and high pressure resistance. Therefore, it is a direct drinking water system and self-service pipe Water system, heating system, steam system, etc. It is made of European standard cw617 material and has no hidden trouble of water leakage.