- Wn (Welding Neck) Flange
- 2016-10-28 07:44
- WN Flange (Welding Neck Flange)Definition: Take the neck and a round pipe and tube butt weld ends with the transition of
- Pre-Galvanized Steel Pipe
- 2016-10-26 16:36
- Pre-Galvanized Steel Pipe1: O. D: 20mm-168mm 2: Thickness: 0.6mm-3.0mm 3: Standard: GB/T3091 13793 4: Material: Q195 Q23