4 points stainless steel bellows connector 304 bellows special steel cap 6 points 1 inch water pipe gas pipe nut

Brass gas pipe joint without knocking Wave 4 points 6 points quick joint inner and outer wire joint 4 points gas pipe two-piece set

304 stainless steel corrugated pipe 4 points water heater connection hot and cold water pipe heat-resistant high pressure explosion-proof metal hose household

304 stainless steel corrugated gas pipe household natural gas pipe gas pipe gas stove transparent yellow metal hose