... :since 1989Supplying high quality tiller blade assembling with kinds cultivators and tractors, exporting to Spain, Italy, Japan, Europe, USA, India, Middle ... , 65Mn, 60Si2Mn (Sup6), 28SiMnB2)Process: forged3)Heat treatment: normalized-hardened and tempered4)Hardness: 40 - 50HRC5)Working hours: 200-250 hrs. You ... as per your requirements. Thailland popular products 2013 farm sugarcane knife