... years exporting experience2.Specification:1/2"-40"3.Flange Process:Forging Flange, Machining Flange, Cast Iron Flange4.Standard: DIN2533, DIN ... LR DNV NK ABS7.Surface:Hot Dip Galvanized8.Flange Type:SOP, SOH, BL, PL, WN, ... SO etc.The flange standard: 1.JIS Standard: JIS B 2220, JIS ... 7S-15-84.5.API Standard: API6056.Nonstandard FlangesThe flange types:1.JIS Standard: SOP, SOH, BL, ...