Standard Bimetallic Screw Barrel For Plastic PVC Pipe Extruder

Specification: Φ15-Φ300
L/D Ratio =10-56
Base Materials: SACM645,SCM440,SKD61
Treatment: Nitrided & Bimetallic
Hardness: HRC55-HRC70
Delivery Time: 20-25 days
12 Months guarantee after shipment

Product Description:

Extrusion Type Screw Compression Ratio Specification：

Screw Compression Ratios For Commonly Used Plastics
Plastics	Compression Ratio	Plastics	Compression Ratio
Rigid PVC(pellet)	2.5(2~3)	ABS	1.8(1.6~2.5)
Rigid PVC(powder)	3~4(2~5)	POM	4(2.8~4)
Soft PVC(pellet)	3.2~3.5(3~4)	PC	2.5~3
Soft PVC(powder)	3~5	PPO	2(2~3.5)
PE	3~4	PSF(sheets)	2.8~3
PS	2~2.5(2~4)	PSF(film)	3.7~4
Cellulose plastic	1.7~2	PSF(Pipe & Sheet)	3.3~3.6
PMMA	3	PA-6	3.5
polyester	3.5~3.7	PA-66	3.7
PP	3.7~4(2.5~4)	PA-11	2.8(2.6~4.7)
PCTFE	2.5~3.3(2~4)	PA-1010	3

General Barriers Specification：

Materials & Treatments：

⁕Bimetallic Process ：

Basis Materials: SACM645, SACM440, SKD61, SKD11

Hardness: 53-58 HRC

Coating Thickness: 1.5-2.0mm

Allication: Plastic Recycling ≤2 Times, Plastics With Glass Fiber≤35%

Wear resistance: ★★★★★

Corrosion resistance: ★★★

⁕Chrome Plating Process:

Basis Materials: SACM645, SACM440, SKD61, SKD11

Chrome Thickness: 0.02-0.08mm

Hardness of Chrome: >700 HV

Finish Grade: Ra ≤0.4

Allication: PVC and other high corrosive plastics

Wear resistance: ★★

Corrosion resistance: ★★★★★

⁕Full Hardened Process：

Basis Materials: DC53, D2, M2, SKD61, SKD11 ...

Chemical Composition: C, Si, Cr, Mn, Mo, V, Ni

Hardness: SKD61(HRC56-58), DC53( 62-63 HRC)

Application: PP PA LCP, POM, PPA, PBT, PC, PPS, PEI, PEEK with Glass Fiber ≤50%

Wear resistance: ★★★★★

Corrosion resistance: ★★★★★

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FAQS：

Q: When will you arrange the production?
A: We can arrange the production after order & drawings confirmation

Q: What is your factory delivery time ?
A: Standard delivery time is 20-25 days, if the screw's diameter is less than 50mm, the delivery time will be faster to 15-20 days, also we usually have stock items ready to ship out.

Q: What is your accepted payment type?
A: T/T

Q: What logistic forwarder do you usually work with?
A: We work with UPS, TNT, FEDEX, SF and other logistric forwarders. Assigned your own forwarder for shipment is available.

Q: What is your warranty Time ?
A: Our warranty time is 12 months when shipment on board