The submerged arc welding technique is applied on the welding of body halves on the seam welding machine and generally on the welding of the valve boss to the upper cylinder halve. The welding automatic with reliable welding power packs and control units are utilized to achieve the uncompromising weld quality with degree of automation needed for the required production capacity per customer. The MIG/MAG welding technique is applied for the welding of foot rings and valve guard rings with the body halves. Welding is the most critical part of the production line, which engages the best cylinder performance and assures the good quality. Our welding machinery is the best cylinder & pressure vessel welding equipment in China and also TOP Ranked worldwide.

Full-auto welding machine includes socket welding, handle/collar welding, base ring welding, circumference welding, and all machines work automatically, the cylinder halves are conveyed by mechanical arm and chain, this system really saves much labor cost and improve the working efficiency apparently. In order to relive all the stresses caused by forming and welding operations, the cylinders are passed through a heat treatment furnace where they are exposed to 930 º C degrees of temperature for certain time before getting cooled gradually.