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High-Quality Conical Twin Screw for WPC Pipe Production & Plastic Extruder &Extruder Screw Barrel

Updated 2026-11-04 · Markdown version

Model no. GM

US$2,0401–4 sets

US$12,6005+ sets

MOQ 1 set · Final price confirmed in your quote

Standard: DIN, ASTM, GB, JIS, ANSI
Material: Iron
Materials: 38crmoala, 40cr, SKD61, 31crmov9, D2, Gr12MOV
Hardness of Tempering: Hb280-320
Nitriding Hardness: Hv850-1000
Surface Roughness: ≤ Ra0.4
Chrome Coating Thickness: 0.025~0.10mm
Dual Alloy Hardness: HRC50-65

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
After-sales Service	We Can Offer Measurement and Mounting Service
Warranty	6-12 Months Under Normal Use
Model NO.	GM
Standard	DIN, ASTM, GB, JIS, ANSI
Technics	Forging
Feature	Recycle
Material	Iron
Materials	38crmoala, 40cr, SKD61, 31crmov9, D2, Gr12MOV
Hardness of Tempering	Hb280-320
Nitriding Hardness	Hv850-1000
Nitriding Layer Depth	0.45~0.7mm
Nitriding Brittleness	Grade II
Surface Roughness	≤ Ra0.4
Screw Straightness	0.015mm
Chrome Coating Thickness	0.025~0.10mm
Dual Alloy Hardness	HRC50-65
Double Alloy Depth	0.8~2.0mm
MOQ	1 Set
Delivery Time	30-60 Days
Transport Package	Wooden Case
Specification	Screw Diameter 45~350MM
Origin	Zhejiang, China
HS Code	847790
Production Capacity	18000sets/Year
Package Size	200.00cm * 80.00cm * 80.00cm
Package Gross Weight	180.000kg
Capabilities	Comprehensive OEM/ODM services offering personalized design and branding, alongside in-house metallurgy and testing (bimetal welding, hardness control).
Worker	600+
Patent	80+
Extruder barrel, screw specifications	Ø20mm ~ Ø330mm
Aspect ratio	L/D = 15~55
Injection molding machine barrel, screw specifications	100KN ~ 35000KN clamping force
Screw diameter	Ø20mm ~ Ø300mm
Pin screw, barrel specifications	Ø75mm ~ Ø200mm
Cold and hot feeding screw specifications	Ø65mm ~ Ø650mm
Conical twin screw, barrel specifications	Ø25/50~Ø185/340
Parallel twin screw, barrel specifications	Ø20mm ~ Ø330mm
Category	Other Machine & Custom Screws

Technical parameters

Product Line	Specifications	Key Features
Conical Twin Screw	Ø25/50–Ø185/340 mm	Variable compression designs
Parallel Twin Screw	Ø45/2 –Ø350/2 mm	High-output configurations
Single Screw	Ø20– Ø500mm (L/D: 15-55)	Precisionmetering sections
Injection Screws	Ø20–Ø300mm (Clamping: 100-35,000 kN)	Wear-resistant alloys
Rubber Processing	Ø20 – Ø650 mm	Cold-feed/pin-type variants

Technical parameters
Hardness of tempering: HB280-320	Screw straightness: 0.015mm
Nitriding hardness: HV850-1000	Hardness of chromium plating on surface after nitriding ≥ 900HV
Nitriding layer depth: 0.45~0.7mm	Chrome coating thickness: 0.025~0.10mm
Nitriding brittleness: Grade II	Dual alloy hardness: HRC50-65
Surface roughness: ≤ Ra0.4	Double alloy depth: 0.8~2.0mm

materials
38CrMoAl(1.8509)	D2	AISI316
34CrAlNi7(1.8550)	DC53	AISI420
31CrMoV9 (1.8519)	Gr12MoV	9Cr18MoV
40CrNiMo	440C	17PH-4
42CrMo	AISI304	Incoel 718
40Cr	1.2316	Hasteloy C-276
C45	1.4462	Incoel 625
SKD11	1.4404	Monel 400
SKD61	1.4122	Monel 500
S600

Description

High-Quality Conical Twin Screw for WPC Pipe Production & Plastic Extruder &Extruder Screw Barrel is part of our other machine & custom screws range (Screws).

Key details

Standard: DIN, ASTM, GB, JIS, ANSI
Material: Iron
Warranty: 6-12 Months Under Normal Use
Technics: Forging
Feature: Recycle
Materials: 38crmoala, 40cr, SKD61, 31crmov9, D2, Gr12MOV
Hardness of Tempering: Hb280-320
Nitriding Hardness: Hv850-1000

Available configurations include standard, material, materials, hardness of tempering and nitriding hardness. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1 set at US$2,040 – 12,600 per set. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for High-Quality Conical Twin Screw for WPC Pipe Production & Plastic Extruder &Extruder Screw Barrel?

The listed minimum order is 1 set, at US$2,040 – 12,600 per set. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$2,040 for 1–4 sets; US$12,600 for 5+ sets. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of High-Quality Conical Twin Screw for WPC Pipe Production & Plastic Extruder &Extruder Screw Barrel?

Standard: DIN, ASTM, GB, JIS, ANSI; Material: Iron; Warranty: 6-12 Months Under Normal Use; Technics: Forging; Feature: Recycle; Materials: 38crmoala, 40cr, SKD61, 31crmov9, D2, Gr12MOV. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include standard, material, materials, hardness of tempering and nitriding hardness. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other other machine & custom screws are available?

The Other Machine & Custom Screws category lists 14,058 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/other-machine-custom-screws/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

More about us → · Request a sample or custom quote →

Request a quote for this product

US$2,040 – 12,600MOQ 1 setGet a quote WA