Description Butt welding flange, also known as high neck flange, is a kind of pipe fitting, which refers to the flange with neck and pipe transition and butt welding connection with pipe. Butt welding flange is ... ادامه مطلب
Description Butt welding flange is a kind of pipe fittings, which refers to the flange with neck and pipe transition and butt welding connection with pipe. It is not easy to deform, well sealed and widely used. ... ادامه مطلب
Persian
