... , JIS B2220, JIS B2216 having won TUV Certificte and ISO9001 FORGED STEEL FLANGES Dimension Standards and Sizes: DIN2527, DIN2631, 2632, 2633 ... ,LF2 Facing method: rust preventing oil, spray paint (black, yellow), hot galvanization, cold galvanization or colored electroplate, powder coating and so ...