... Materials :CS & SS& AS Size :DN15-DN1200 ISO9001 ISO14001 OHSAS1800 WELD NECK FLANGE ANSI #150 RFSize:From 1/2” – to 48” / ... Alloy stee, Stainless steelType:Blind flange, slip-on flange,welding neck flange,thread flange, socket welding flangeSurface treatment:Black paint, yellow ... , chemical, power, gas,metallurgy,constructionSpecial design available as requirement WELD NECK FLANGE ANSI #150 RF