Clamps and Ferrules is made of different grades of different stainless steel. Gautam Stainless Pvt. Ltd. Is an ISO 9001:2000 awarded company that manufactures Clamps and Ferrules. Gautam Stainless Pvt. Ltd. Also manufactures union and butterfly valves. Clamps and Ferrules come with EPDM, Silicone, and Vition gasket. It is available in 1/2" to 12`` and 10 to 300 DN. Its internal surface finish is achieved below RA 0.8 with machine.