The stainless steel strips all come from world-class steel enterprises. Each batch of raw materials must undergo three stringent tests: material testing, dimensional inspection, and appearance examination before being put into production. Each SS steel pipe is perfectly welded in an environment with internal and external gas protection using Lincoln and Panasonic welding machines imported from abroad. The pressure resistance of the pipes including SS 304 steel pipe, 310 SS pipe, SS 316 tube and SS 202 pipes far exceed national standards. Each stainless steel pipe undergoes a pickling and passivation process to ensure the formation of a rich chromium oxide film, guaranteeing the quality. The stainless steel pipes are divided into standard and thickened types, with wall thickness requirements higher than those of peers and exceeding national standards by 20%.