... Size,standard and custom size 2,Material:Welding Neck Flange 3,Professional Tech Supply supply Welding Neck Flange1.specificationStandards: ANSI(ASME), AWWA ... , DIN, EN1092, GOST, JIS, BS, UNI, SABSType: welding neck, slip on, bind, threaded, lap-joint, socket weldingPressureMaterial: carbon ... 2 LONG WN 1/2"--24" 150-2500LBS Long welding-neck A105, A350LF2,A182 F304/F304L,F316/F316L 3 ...