We manufacture the rings according the drawings and requirements from our customers,Website:http://www.eamachine.com, we are able to supply the rings with rough forged, rough machined or finial machined. We can also provide the services of heatings and machining.We had very flexible productions of the rings, small batch is also available for us. Manufacturing ways: Forged or rolled, rough turned, heat treated, CNC turned, milled, drilled, threaded, grinded, etc.Materials:According to customers' demands, we are available of stainless steels, carbon steels, alloy steels, alloy tool steels, 316L, 316, 304, 304L, 1.4432, 1.4462, 1.4301, 1.4404, 1.4418, F51, 2205, 25CrMo4, 42CrMo4, 16MnCr5, Ck45, P280GH, 40Cr, 41Cr4, 17CrNiMo6, 34CrNiMo6, ST52-3, S355J2, S355J2G3, S355JR ,1.2379, Mo12Cr1V1, etc.Heat treatment: Annealing, Normalizing, Quenching+Tempering(Q+T), Hardening, etc.Ring sizes: From 20mm to 4000mm.Weight:From 1kg/pc to 10,000kg/pc.