SAE single-part butt-weld flanges and SAE butt-weld counterflanges types BFX-ST/BAS-ST for high-pressure tubes (Schedule 80/160/XXS), BFX-STRE/BAS-STRE for high-pressure tubes (Schedule 40) and BFX-SRE/BAS-SRE for metric tubes in the high-pressure series (6000 PSI) as per ISO 6162-2:2002. Available in all common nominal sizes between DN 13 (1/2”) and DN 64 (2 1/2”). Straight and 90° elbow versions. Available in steel or V4A stainless steel. Individually or as a complete set with bolts, lock washers and O-ring.