... :steel . Linyi Kunhong Tools Co.,Ltd 1.the diameter is 690mm, 2.for stones cutting . 3.no segment ,can not be used ... material:steel .alloy.iron ,diamond.5.high frequency welding or brazed welding or gas welding 20019020 22,23 25.4 501.8131632302201.8161632502401 ... 5.06418510009847018511001084741851200118480185Our steel core size is from 250mm to 3500mm up to now, will be ready for bigger size on the end ...