GOST 12820 Ss F316 /F316L ASTM A182 ASME B16.5 R/F 150lbs Slip on Welding Flanges
China GOST 12820 Ss F316/F316L ASTM A182 ASME B16.5 R/F 150lbs Slip on Welding Flanges, Find details about China Blind Flanges, Steel Pipe Flange from GOST 12820 Ss F316/F316L ASTM A182 ASME B16.5 R/F 150lbs Slip on Welding Flanges