China Wholesale WN Flange Long Welding Neck Collar Flange Carbon Steel Stainless Steel ANSI DIN JIS EN BS EN1092-1 Type 11 Standard ASME B16.5 Supplier China - Customized Products Wholesale - Shaanxi Fenry
Welding Collar Cupro Nickle Weld Neck Flange, For Oil, Size: 5 inch
DIN 2673 Loose Flanges and Rings with neck for Welding | China Hebei Haihao Flange Factory
EN 1092-1 type 11 1.4404 Weld Neck Flange 1.4404 / A182 F316L Flange ,