Production process of gas meter pipe joint

Abstract

The invention discloses a production process of a gas pipe joint, and aims to provide a gas joint production process with low pollution, low energy consumption and high safety. The main points of the technical scheme are thatmultiple times of cold heading extrusion molding are performed for metal raw materials to gradually eliminate the deformation resistance in metals. The invention further provides a gas meter pipe joint produced by the process; one end of a connecting pipe is a first connecting end; an external thread is arranged at the outer side of the first connecting end; the other end of the connecting pipe is a first sealing end; a first boss is peripherally arranged at the outer side of the first sealing end; one end of a nut is a second connecting end; an internal thread is arranged at the inner side of the second connecting end; the other end of the nut is a second sealing end; and a second boss is peripherally arranged at the inner side of the second sealing end. The gas meter pipe joint is characterized in that a third boss is peripherally arranged at the inner side of the first sealing end; and the third boss is opposite to the first boss. The invention aims to provide the gas meter pipe joint with high sealing performance, safety and reliability.

Description

technical field [0001] The invention relates to a joint manufacturing process, more specifically, it relates to a gas meter pipeline joint manufacturing process. Background technique [0002] The gas meter pipe joint is used to connect the gas meter pipe ball valve and the gas meter pipe. It has strict sealing performance requirements. It is generally made of carbon steel or stainless steel and is mainly processed by casting. [0003] In the prior art, the Chinese Invention Patent China with the application number CN201010603603.2 discloses a gas meter pipeline gas pipe joint and its processing technology. The outer surface is provided with outwardly turned flanges. The process includes: using 20# material, intermediate frequency heating → 100T cold heading machine mold blank making, forming → 35T cold heading machine mold punching → turning rough pipe joints → rolling thread → CNC lathe finishing → surface treatment (color plating Zinc) to get the finished gas meter pipe ...

AI Technical Summary

Problems solved by technology

[0004] At present, due to the hollow structure of the ball valve with a large middle and small ends, the manufacture of the ball valve is generally made by casting, and the casting process has defects such as serious pollution, high energy consumption, and high cost, and the cast product has sand holes, Defects such as stomata

Images