Steel steel flanges Material Carbon steel ASTM A105. ASTM A350 LF1. LF2, CL1/CL2, A234, S235JRG2, P245GH P250GH, P280GHM 16MN, 20MN ,20# Stainless steel ASTM A182, F304/304L, F316/316L Alloy steel ASTM A182 A182 F12,F11,F22,F5,F9,F91etc. Standard ANSI Class 150 steel flanges-Class 2500 steel flanges DIN 6Bar 10Bar 16Bar 25Bar 40Bar JIS 5K steel flanges-20K steel flanges UNI 6Bar 10Bar 16Bar 25Bar 40Bar EN 6Bar 10Bar 16Bar 25Bar 40Bar TYPE 1.Welding neck steel flange 2.Slip on 3.Blind flange 4.Long welding neck flange 5.Lap joint flange 6.Socket welding 7.Threaded flange 8.Flat flange Surface Anti-rust oil, clear lacquer, Black lacquer, Yellow lacquer,hot-dipped Galvanized,electrical galvanized Connection Welding, Threaded Technical Forged, Casting Size DN10-DN3600 Package 1.>Standard export packaging (Plywood Case Of Outside,Plastic Cloth Of Inside). 2:As Customers' Requirements Heat Treatment Normalizing, Annealing, Quenching Tempering Certificate TUV,ISO9001:2008;PED97/23/EC,ISO14001:2004,OHSAS18001:2007 Applications Water works, Shipbuilding industry, Petrochemical & Gas industry, Power industry, Valve industry,and general pipes connecting projects etc.