... or low temperature conditions.Size3/8"~160" DN10~DN4000PressureAmerican Series: CLASS 150, CLASS 300, CLASS 400, CLASS ... 600, CLASS 900, CLASS 1500, CLASS 2500 European Series: PN 2.5, PN 6, PN 10, PN ... rust-proof black oil or hot galvanizedFlange Facing TypesAmerican Series: Flat Face(FF), Raised Face(RF), Tongue( ... F), Male(M), Ring Joints Face(RJ)European Series: Type A(Flat Face), Type B(RaisedFace), ...