... 80 CT20 DN15--DN1600 PN6, 10, 16, 25, 40 rust-proof oil Forged CS flange GOST 12820-80Pressure: PN6, PN10, ... PN16, PN25, PN40Material: CT20Size: DN15 to DN1600Coating: rust-proof oil, transparent yellow paint, hot galv., cold galv., Package: seayworthy ... , CROSS, CAPType: welded, seemlessMaterial: carbon steelCoating: anti-rust oil, black paint, transparent varnish, transparent yellow paint, hot dip ...