We can manufacture all types of screws and barrels according to clients' requirement. Double screw and barrel Depth of Nitration Layer: 0.5-0.8mm Hardness of Nitration: 950-1020Hv Fragility of Nitration: Less than grade 1 Surface Roughness: Ra 0.4 um Streightness of Screw: 0.015mm Surface Hardness of Nitrated Cr coating Layer: >=950Hv The Thickness of Cr Coating Layer: .03-0.08mm Hardness of Alloy Plating: HRC55-620Depth of Alloys Layer: >2mm We can manufacture all types of screws and barrels according to clients' requirement. Screw and barrel 1)High quality steel 38CrMoALA or SKD612)Factory cost price3)ISO9001:2008, SGS4)Fast delivery best service Packaging & Shipping Our Forwarder According to customers demands to choose the forwarderTransport By Sea; By Air(the cost will get agreement with customers)Seaport Ningbo or Shanghai Woodencases with our company marks Our Services Design ServiceScrew and barrel Design According with Capacity and Raw MaterialAfter Service24 Hours After-sales Company Information Zhoushan Huayu Machinery Manufacturing PlantAdd: No.69 Haifu Outer Pond, Yancang Street, Dinghai, Zhoushan,Zhejiang, China 316000Tel: +86 (580) 8803-886 +86 (580) 8805-118 Fax: +86 (580) 8803-885 Mobile phone: +86 135 7563 8315ZHOUSHAN HUAYU MACHINERY MANUFACTURING PLANT is one of the largest domestic manufacturing enterprise thatspecializes in researching, designing and manufacturing high precise bimetallic and nitrided screws and barrels, as well as screw assembly parts, barrel assembly parts, various oil cylinders and air cylinders. We provide products for manufacturers of plastic injection, extrusion, chemical fiber, cables and so on.After more than twenty years of constant pioneering efforts, we have enlarged our production scale yearly. We possess high technology advanced processing equipment from Germany. Furthermore, we have improved our production ability of 600 sets of twin-screws and barrels for conical and parallel, and 8,000 sets of single-screws and barrels. We have passed the ISO 9001:2000 International Quality System Identification. Therefore, all our products are guaranteed to be of perfect quality. Checkingthe qualityis the most important stage in our production processing, before the goods are delivered to our customers. In order to carry out our target of achieving zero defects and 100% quality, strict quality checks are conducted at every stage of production,from the designing, manufacturing and up to the final stage of packaging, we ensure that only goods of high quality are delivered to our customers. As far as the quality of our products and services are concerned, our company won the approval of our customers and established a great reputation for our quality products. FAQ What is screw and barrel processing production? Our Screw and Barrel processing production:Order--Design(Customer Drawing)—Production Arrangement—Material Procurement —Hardening&Tempering—Drilling—Rough Turning—Rough Thread Rolling(Alloy Spray Welding if the customer need—Alignment—Fine Thread Rolling—Mixing—Alignment—High Frequency Treatment—Alignment —Polishing—Grinding—7 days Nitriding Treatment—Acid Picking—Polishing—Chrome Plating—O.D.Grinding —Packaging&Shipping
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