1. Technical parameter:

Diameter: Φ 35-Φ 250(according to the demands of customers)
L/D ratio of screw: 16-35
Conical dual-hole barrel screw specificaiton: Φ 25Φ 45-Φ 92Φ 188(according to the demands of customers)
The screw compressor can be designed according to different products and formulas
Technology index: Depth of nitrition layer: 0.4-0.7mm
Nitriding treatment, surface hardness: HV≥ 900-1000
Fragility of nitrition: Less than grade 1
Surface roughness: Ra 0.4um
Streightness of screw: 0.015mm
Chrome plating thickness: 0.01-0.1mm
Bimetal coating thickness: 1.5-2.0mm
Material: Base material 38CrMoAlA


2. Certificate: BV, SGS, CE, TUV


3. Technological Process:

BlankingRough, MachiningQuenching & Tempering, Semi Finishing Machining, Finished Product, DetectingNitring/Alloy Processed, Finish Machining


4. Why to choose us?

One: We have long history and experience working in the field.
Two: We have the most advanced equipments and technique in our industry.
Three: We have professional engineer, Cad drawer and staffs.
Four: We have 100% quality ensure system and 24hours after-sale service system.
Five: We have passed third-party assessment, such as CE, SGS and TUV and BV.

5. Packing for Stainless steel screw and barrel
1) Strong and solid export wooden case with foam inside
2) Plastic film case package
3) Suitable to transportation
4)As buyer request


Company profile :
Zhejiang pinbo plastic machinery co.,ltd is located in ruian wenzhou city with brand of PYM(Former Ruian yumin machine screw co.ltd since 1988). The company is specialized in making screw barrel, gearbox zlyj series, t die, filter and extruder machine. It has become one of the largest supplier of main parts in Ruian city which is the basement of plastic machines. 
 
It owns many computercontrol CNC milling machines in length8000mm in Fanuk series,18000mm length deep hole drilling machine and other advanced equipment.
Long time nitriding treatment for 7days and nights greatly ensure the hardness and lifetime of its products. Meanwhile, the company and its products have passed assessment by SGS company, Bureau of Veritas, Tuv and Ce certificate.

Dear customer, if you already have suppliers or are looking for suppliers, have a try to believe us, we are sincerely welcome you and want to cooperate with you.

Main parameters :