Disc Harrow, Disc Plough, Tillage Machine manufacturer / supplier in China, offering 710-7.5m Working Width Hydraulic Folding Tractor Trailed Extra Heavy Duty Farm Disc Harrow with Sealed Bearings and 28 Inch 30mnb5 Boron Steel Disc Baldes, 710-6.5m Working Width Hydraulic Folding Tractor Trailed Extra Heavy Duty Farm Disc Harrow with Sealed Bearings and 28 Inch 30mnb5 Boron Steel Disc Baldes, China Factory Supplier High Performance 65mn Steel 35mnb5 Boron 52 Hardness Material Agricultural Plow Harrow Disc Blade 20/28/22/32/26inches and so on.