Screw element and segmented barrel for plastic machinery screw element and segmented barrel specification: Terms and Conditions:  About ZY: 1.rich strength----We have our own professional teams in the sales, design, production, inspection and customer service areas. We concentrate to bring customers the most perfect customer experiences. 2.high-quality products----We adopt a series of advanced production and processing equipments such as CNC machines , Stellite PTA welding machines to ensure the quality of our products. 3.large international market----We do foreign trade more than 5 years, we have a set of mature foreign trade system, our customers are all over the world. We will continue to expand our international market. 4.location advantage----We are located in China's screw town----Jintang town, Zhoushan city, near to Ningbo Port and Shanghai Port. 5.serious and responsible attitude----Over the years, we always maintain a serious, professional and responsible attitude, make our best efforts to meet customers' demands.                 Welcome to contact us~! The small backhoe loaderr is a kind of earthwork construction machinery widely used in roads, railways, hydropower, construction, ports, mines and other construction projects. It is mainly used for loading and unloading bulk materials such as soil, sand, lime, and coal. It can also be used for ore , Hard soil, etc. for light shoveling and digging operations. Compact backhoe loader,Mini backhoe loader,Mini Track backhoe loader,Small backhoe loader Machine Shandong Davoo Machinery Co., Ltd. Trading Company , https://www.nbsddigger.com
Product Description
ZHONGYANG SCREW is one of the most professional manufacturer of screw barrel 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:
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Screw diameter: 18mm-200mmÂ
1. The above is standard sizes and type , if your screw barrel size didn't mentioned above,  please contact me &we will give you best solution for it!
Technical information:Â
Base materials:Â
1)38CrMoAlAÂ (JISÂ SACM645)Â
2)42CrMo (AISI 4140) Â
3)W6Mo5Cr4V2
4)S45C
Processing technics:Â
Heat treatment
High-frequency quenching
Nitriding treatment
Technical parameters:Â
Nitriding layer depth: 0.5-0.8mm
Nitrided Hardness: 900-1000HV (HRC 55-65)
Nitrided brittleness: Less than grade 1
Surface roughness: Ra 0.4
Linearity of screw: 0.015mm
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Means of transport: By sea, By air, Express
Production time: About 20-30 days after we receive the advanced payment
Production Process:Â
Receiving orders - Designing & Drawing confirmation - Blanking Thermal refining - Heat treatment - Rough Turning - Polishing - Drilling for barrel - Semi Finishing Machining - Polishing - Nitriding treatment(120 hours) or High frequency quenching  - O. D. Grinding - Honing for barrel - Alignment - Polishing - Inspecting - Packing & Shipping
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