rubber machinery screw barrelJINLI SCREW is one of the most history and famous screw barrel brand in China. We have professional and experienced teams in every department of our company. We think professional, quality and service is the basic of business. If you want reliable and helpful screw barrel, we will be your best choice! Please kindly find our detailed information as following:
Specification:
Screw Diameter for Cold Feeding Screw and Barrel: Φ40mm-Φ300mm
Screw Diameter for Hot Feeding Screw and Barrel: Φ30mm-Φ250mm
Screw Diameter for Pin Rubber Screw and Barrel: Φ50mm-Φ250mm
L/D Ratio: 4-18
Products display: 
Technical information:
Base materials: 1)38CrMoAlA (JIS SACM645)
2)42CrMo (AISI 4140) 3)4Cr5MoSi V1 (JIS SKD-61)
4)DC53 (JIS G4404) 5)Cr12MOV (SKD11)
6)9Cr18MOVBimetallic alloy materials: 1)Ni-based alloy/Deloro alloy
2)Fe-based alloy 3)Co-based alloy
4)NiCo-based alloy 5)Tungsten carbide/Wolfram carbideProcessing technics: Heat treatmentHigh-frequency quenchingNitriding treatmentBimetallic alloy weldingBimetallic alloy centrifugal castingHard-chrome electroplatingTechnical parameters: Nitriding layer depth: 0.5-0.8mmNitrided Hardness: 900-1000HV (HRC 55-65)Nitrided brittleness: Less than grade 1Surface roughness: Ra 0.4Linearity of screw: 0.015mmBimetallic layer depth: 3 mmBimetallic layer hardness: HRC 55-70Hard-chrome plating hardness after nitriding: ≥950HV
Chrome-plating layer depth: 0.03-0.1mmTerms and Conditions: Means of transport: Ocean, Air, ExpressProduction time: About 20-30 days after we receive the advanced paymentProduction Process: Receiving orders - Designing & Drawing confirmation - Blanking Thermal refining - Heat treatment - Rough Turning - Polishing - Drilling for barrel - Semi Finishing Machining - Bimetallic welding - Centrifugal casting for barrel - Polishing - Nitriding treatment(120 hours) or High frequency quenching - Hard-chrome plating - O. D. Grinding - Honing for barrel - Alignment - Polishing - Inspecting - Packing & Shipping 
JL SCREW's advantage: First-class designing and researching team; High quality and durable products of screw barrel; Most professional sales who can serve for you timely; Best customer service especially after-sale service; Powerful company's strength support long-term cooperation. Welcome to contact us, Tracy will reply you timely!
Zhoushan Jinli Screw Industry Co., Ltd was established in the year of 1998, we are a professional manufacturer of designing, researching and manufacturing all kinds of screws, barrels and other accessories for plastic and rubber machinery.
Our company is located in Zhoushan city, it covers an area of 12000sqm and has over 100 employees. We are well equipped with a variety of advanced machines, experienced R&D team, strict quality control system and perfect after-sale service. These conditions are ensuring us best quality and creating more and more long-term customers.
In order to keep high quality, we built quality control system strictly follow ISO9001: 2008 international Quality System and kept effective operating. As a result of our high quality products and outstanding customer services, we have gained a global sales network reaching Middle East, Southeast Asia, Eastern Europe, Africa, South America etc.
With the JinLi spirit of "based on sincerity, build a win-win situation", in the past twenty years, we developed together with customers. We believe our unremitting efforts will help us win greater markets and play a bigger role in this field in the future.
