purchase of chain and chain spares , forged block type chain for irc (as per drawing) pitch- 229mm braking strength minimum – 80000kgs material: - link-en-9 (hardness - 15+5 hrc) pin- ss-410 (hardness-50+5 hrc) bush-ss-410 (hardness-45+5 hrc) , re-bushing with pin & nut of forged block type irc chain (rate required per meter basis) pich-229 mm material of bush-ss-410 bush hardness- 45+5 hrc material of pin- ss-410 pin hardness- 50+5 hrc i.d of bush should be same as per drawing. thickness of bush may be increase but below as per drawing not acceptable. , bagasse elevator & main bagasse carrier bush (as per drawing) material- en-353 hardness- 50+5 hrc , bagasse elevator & main bagasse carrier rack attachment link (as per drawing)