Supply Of Mechanical Jack Lifting Equipment 30-Ton Capacity Confirming To Is 3832-2005 The Fr Ame Of The Block Shell Be Design For Proper Strength , The Hardness Of The Pawl Tip Shell Not Be Less Then 40 Hrc And That Of Ratchet Not Less Then 30 Hrc. Welding Shall Not Be Used As A Method Of Retention Or Sealing Etc. [ Warranty Period: 30 Months After The Date Of Delivery ] ]