Siddhagiri is manufacturer of tongue and groove flanges in Stainless steel grade 304/316L, Nickel alloy, Inconel, Monel & Duplex steel, we are Gasco approved supplier of asme b16.5 raised face flanges,check price & dimensions of SS rtj large groove Flange class 150 to 300 in India, view Raised Face tongue flange price list.