Carbon Steel Block with Protection Cover is made from L.M.6 Aluminium Alloy Material and can withstand high temperature applications. Kunj Needles Industries supplies Carbon Steel Block with Protection Cover Kunj Needles Industries is the manufacturer of textile comber needles, pin bars, Stenter Chain, Stenter Clips, Pin Plates and Chain Link for textile industries. The Carbon Steel Block with Protection Cover of model number NA-8 comes with pressure die casting processors to resist high temperature.