MC56 Hollow pin chain 1.40Mn, 45Mn quality alloy steel 2.carbonized harden 3.competitive price 4.trend to long cooperation MC56 Hollow pin conveyor chainMC series Standard hollow pin conveyor chain.Seamless bush.Pitch: 80, 100, 125Material: carbon steel, 304 stainless steel.SPECIFICATION:PACKING: MC56 Hollow pin chain