chain wheel 1,material:STEEL(1023/1045#) 2,the chain wheel got ISO9001:2000 3,we are OEM chain wheel factory ... 4,standard/non chain wheel Packaging Detail:Steel pallet or ... drawing or as per standard such as Metric standard, British standards, AGMA standards2.Material can be C45, 40Cr, 20CrMnTi, ... you a sample as your request. YH- industrial chain wheel