81/17 Twin Screw Barrel Manufacturered by Ejschina

1.About E.J.S.EJS is a newly created brand name for Export business with manufacturing experiences since 1992.Our mission is to make the screw barrel import work Easier with Joy and bigger Success for our customers internationally.2.  Product Details1) Base materialsOur common materials include 42CrMo(4140Steel), 38CrMoAlA(1.8509), 31CrMoV9(1.8519), 34CrAlNi7(1.8550), 40Cr, 45Steel,SS304, SS416, SKD11, SKD61,. Other materials are possible, please contact us for further details.2) Surface treatmentsIncluding: quenching & tempering, nitriding, hard chrome-plated, bimetallic alloy coating, through hardened.  Bimetallic BarrelsAlloy TypeEJS01 AlloyEJS02 AlloyEJS03 AlloyEJS04 AlloyAlloy ComponentsFe+Ni+Cr+B(Fe:65, Ni:14, Cr8, B:3.5)Ni+Cr+Co+BNi+Cr+Co+V+BNi+Wc+Cr+B(Ni:50, Wc:15~35,Cr:6~8, B:2.5~3.2)Wearing Resistance★★★★★★★★★★★★Corrosion Resistance★★★★★★★★★★★Alloy Thickness2-3mm1.5~2mm1.5~2mm1.5~2mmHardnessHRC 58~65HRC 50~58HRC 55~60HRC 55~65Temperature Range≤400≤450≤450≤600Coefficient ThermalRT~250ºC11.0x10-611.0x10-611.5x10-611.0x10-6Expansion(/ºC)RT~400ºC11.4x10-611.4x10-612.4x10-612x10-6Range of Workable Length700mm~3000mm/pieceBase Steel Vastly Used40Cr, 42CrMoMark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good  Bimetallic ScrewsSuitable forSingle Screw, Twin Parallel Screw, Twin Conical ScrewAlloy TypeNi60Colmonoy 56Colmonoy 83Alloy ComponentsNi+Cr+Fe+Si(Ni:65, Cr:17, Fe:15, Si:5)Ni+Cr+Si+Fe(Ni: 68, Cr:18, Si:5, Fe:5)Ni+Wc+Cr+C(Ni:40, Wc:34, Cr:20, C:2)Anti-Wearing Level★★★★★★★★★★Anti-Corrosion Level★★★★★★★★★★★★Alloy Thickness1~1.5mm1~1.5mm1~1.5mmHardnessHRC 56~62HRC 46~61HRC 43~48Applied Glass FiberUnder 10%  Range of Workable LengthAny length neededBase Steel Vastly Used38CrMoAl(1.8509), 34CrAlNi7(1.8550), 31CrMoV9(1.8519)Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good3.  E.J.S Workshop4. EJS Bimetallic Machine1) New PTA welding mahine for screws:   2) Centrifugal casting machine for barrels   5.  Quality InspectionWe take only first-class steel and check every production procedure to ensure every dimension is produced precisely. A final complete inspection will be executed before dispatch.6. PackagingWe use strong plywood or wooden case for all our products7. Our Advantages1) Quality always comes first. Our experienced workers pay attention to every tiny procedure during the production and inspection, to ensure the precision of every dimension. 2) Service makes us outstanding. Our sales people are trained on the products every day. They are always ready to answer your questions and offer the best solutions in fluent English at any time.3)  Provide an easier working way. With 6 years export experience, we E.J.S offer before-sales, prouction update, after-sales one stop service, which gives all our customers an easier way to work with us. We welcome you to visit our factory at any time.8. Our marketThrough years of developing, we have happy customers all over the world with main market in Europe, South America, Asia, Middle East, ect.We look forward to working with you now and forever!  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1