Classic Polyester Breathable Car Seat Covers in Black Blue

Classic Polyester Breathable Car Seat Covers in Black Blue

Basic Info Type: Pipe Extruder Screw: Twin-Screw Computerized: Computerized Base Material: 38crmoala Nitrided Layer Depth: 0.5-0.8mm Surface Roughness: Ra 0.4 Bimetallic Layer Depth: 3 Mm Hardness After Hardening&Tempering: Hb240-280 Specification: ISO9001-2008 HS Code: 8477900000 Plastic...
We are going to make excellent efforts to create new and top-quality goods, meet your special requirements and provide you with pre-sale, on-sale and after-sale companies for Rubber screw and barrel, injection screw barrel parts, parallel twin barrel. We keep the path of green development and promote the company's product transformation and upgrading. We actively promote a modern enterprise management model, strictly control product quality in production, and try our best to meet customer needs in terms of after-sales service. With sincerity and enthusiasm, we wholeheartedly welcome friends from home and abroad to patronize. We firmly believe that pay before return, quality before brand, and responsibility before development.


Basic Info

Type: Pipe Extruder

Screw: Twin-Screw

Computerized: Computerized

Base Material: 38crmoala

Nitrided Layer Depth: 0.5-0.8mm

Surface Roughness: Ra 0.4

Bimetallic Layer Depth: 3 Mm

Hardness After Hardening&Tempering: Hb240-280

Specification:  ISO9001-2008

HS Code: 8477900000

Plastic Processed: PVC

Automation: Automatic

Application: Extruder

Nitrided Hardness: 900-1000hv (HRC 55-65)

Nitrided Brittleness: Less Than Grade 1

Linearity of Screw: 0.015 Mm

Bimetallic Layer Hardness: HRC 58-70

Trademark: JS-ALLOY

Origin: China Mainland

Product Description

Wear-resisting bimetallic conical twin screw barrel for WPC wall


JS-ALLOY 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:


Conical twin screw barrel specification:

Φ 22/45, Φ 35/75, Φ 40/80, Φ 45/90, Φ 45/97, Φ 50/105, Φ 51/105, Φ 55/110, Φ 60/125, Φ 65/120, Φ 65/132, Φ 70/143, Φ 70/150, Φ 80/143, Φ 80/156, Φ 90/188, Φ 92/188, Φ 95/190, Φ 105/191, Φ 100/200

1. The above is standard sizes, if your screw barrel size didn't mentioned above, please contact me & we will give you best solution for it!

2. We provide Cincinnati, Battenfeld, Krauss Maffei, Amut, BAUSANO, Weber designing.


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)9Cr18MoV

Bimetallic alloy materials:

1)Ni-based alloy/Deloro alloy 2)Fe-based alloy

3)Co-based alloy 4)NiCo-based alloy

5)Tungsten carbide/Wolfram carbide

Processing technics:

Heat treatment

High-frequency quenching

Nitriding treatment

Bimetallic alloy welding

Bimetallic alloy centrifugal casting

Hard-chrome electroplating

Technical parameters:

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

Bimetallic layer depth: 3 mm

Bimetallic layer hardness: HRC 55-70

Hard-chrome plating hardness after nitriding: ≥ 950HV

Chrome-plating layer depth: 0.03-0.1mm


Products Application:

1)General Plastics, PVC

2)Material compounds CACO3, glass fiber, recycle materials, stabilizer

3)ABS, TPR, TPU, PMMA, C-PVC, UPVC, RPVC, PET, EVA, PU etc

4)Scrap and waste plastic and PVC recycling

5)Modified engineering plastics


Terms and Conditions:

Means of transport: Ocean, Air, Express

Production time: About 20-30 days after we receive the advanced payment


Production 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



Find excellent quality bimetallic conical twin screw made in China from one of the largest manufacturers and suppliers - Jinsheng Bimetallic. Leveraging on advanced equipment and superior techniques, we can offer you bimetallic conical twin screw with high resistance, high quality and competitive price. With many products in stock, we warmly welcome you to buy or wholesale our products.
We guarantee to give you a timely reply, and look forward to working with all merchants to grow together, through joint efforts, to provide the best quality Classic Polyester Breathable Car Seat Covers in Black Blue for you. Our company not only has high-quality products, but also provides professional technical services. The team is our forest, lush and full of vitality. But if we don't strengthen management and serve the public, the forest will disappear.
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