ANSI B16.5 Class 150 SCH40 WNRF Flange Carbon Steel Welding Neck Flanges Description: WN flanges are mainly suitable for butt welding of flanges and ....
ANSI B16.5 Class 150 SCH40 WNRF Flange Carbon Steel Welding Neck Flanges Description: WN flanges are mainly suitable for butt welding of flanges and ....