1:Welding Neck Flange 2:Size:1/2"---72" 3:Carbon Steel /Stainless /Alloy Steel 4:150#--2500# 5:DIN/JIS/ASME/ANSI B16.47 ... : WELDING NECK FLANGE, THREAD FLANGE,BLIND FLANGE.Pressure : 2000Psi, 3000Psi, 5000Psi, 10000Psi, 15000Psi, 20000Psi, 25000Psi* Materials Includes:> Carbon Steel: ASME SA105N> Low Temperature Carbon Steel ... /625, Incoloy 825/800 > Cu/Ni 90/10,70/30 Carbon Steel Welding Neck Flange