Steel made Screw Barrels come in hard chrome-plated, nitrided and polished form. These Screw Barrels are manufactured with quality grade alloy steel. These Screw Barrels ensure optimum mixing as well as eliminate carbonization [burning] of material. These Steel made Screw Barrels are available in various Screw models, sizes and materials like LLDP, Resin Varsin, etc.