Awwa C207 A516 Gr60 Gr65 Gr70 Class 125lw Class B Weld Neck Carbon Steel Flange

Awwa C207 A516 Gr60 Gr65 Gr70 Class 125lw Class B Weld Neck Carbon Steel Flange

A circular groove is opened in the middle of the two flanges, the metal ring is placed in, the two flanges are hit hard, and the flange is hard connected.