Knowledge of steel pipe: Commonly used fittings of national standards

National standard GB12459 Butt Welded seamless steel pipe GB / T13401 Butt welded steel plate GB / T14383 Butt welded pipe fittings GB / T14626 forged steel threaded pipe GB9112-9131 Steel pipe flange, flange cover and method Blue gasket This message is provided by

A3. Bathroom Accessories

kaiping aida sanitary ware technology co.,ltd , https://www.kpfaucets.com