Contract Bidding Open For 12 mm dia alloy steel GR - 80 four legged chain sling with main bull ring of 36 mm dia X 160 mm ID eye ring of 28 mm dia X 100 mm ID and eye hook at free ends effective length 03 meters , SWL 10 tones at 0 - 90 degree. Safety Factor 4:1, Hook opening J - 75 mm, with proof load & material test certification of OEM from certified LAB for each chain sling with different identification no. in Uttar Pradesh