forged ring with pre machining material: S45C, 42CrMo4 etc. as customized Guarantee: UT report, mill test certificate etc. Grade:S45C, 42CrMo4, 17CrNiMo6 etc., as customizedSize:OD635xID385XTH90mm, as cutomizedMOQ:1pcsQuality assurance:UT certificate, 3.1 certificate acc. to DIN EN 10204, Mill test certificate etc.Packng:in steel palletDelivery time:15-20 days. forged rings Verified Information ...