Configure the extrusion unit around your PVC formulation and finished product.
Review SJSZ conical twin-screw extruders for PVC pipe and profile production. Compare the screw pair, drive and downstream connection for your formulation.
The SJSZ series is a conical twin-screw extrusion platform for processing PVC compounds. Your formulation, product section and required output determine the appropriate screw pair and drive configuration. Select the extrusion unit together with the die and downstream equipment so that material preparation, melt delivery and line speed work as one process.
For a replacement project, start with the existing machine nameplate, screw information and die connection. For a new line, start with the material formulation and the finished product drawing. Both routes require a clear production target before a model is selected.
Model Specifications
Compare SJSZ Models
Compare the listed models against your material, product dimensions and operating requirements.
Parameter
SJSZ-45/90
SJSZ-51/105
SJSZ-55/113
SJSZ-65/132
SJSZ-80/156
SJSZ-92/188
Screw diametermm
45/90
51/105
55/113
65/132
80/156
92/188
Screw speedrpm
1–45
1–45
–
1–35
1–37
1–33
Effective screw lengthmm
985
1070
1200
1440
1800
2500
Extruder motor power (catalog configuration/range)kW
15
18.5
–
37
55
90
Barrel heating power (catalog)kW
12
18
18
24
36
86.8
Output (catalog figure/range)kg/h
120
80–150
150–180
250–300
320–400
600–800
Center height (catalog)mm
1000±50
1000±50
1000±50
1000±50
1000±50
1200±50
Net weight (catalog)kg
2800
3200
3500
4000
5000
8000
Overall dimensions (L × W × H)mm
3300×1200×2100
3600×1100×2100
3600×1100×2100
4235×1520×2450
4750×1550×2460
6725×1550×2841
Catalog figures are for model comparison. The supplied configuration and production target must be confirmed for your formulation, tooling and operating conditions.
A dash means no value is listed for that model. Confirm the final specification with the selected configuration.
Design And Function
What The Machine Does On Your Line
01
Conical twin-screw arrangement
Two conical screws process the compound and deliver material to the die. Screw geometry must suit the formulation, including filler content, additives and the planned material preparation route.
02
Series-level model comparison
Compare the models in the specification table before narrowing the selection. Screw diameter and motor power describe the machine; achievable output also depends on the compound, die resistance and product.
03
Connection to the extrusion process
Define feeding, temperature control, venting and downstream coordination as part of the configuration. These details matter when an extruder is added to an existing line.
Model Selection
Not Sure Which Configuration Fits Your Line?
Send your material, product size and output target. We shortlist the model and the options with you before quotation.
Match the extruder to the pipe formulation, diameter range, wall thickness and die arrangement. Include the calibration, haul-off and cutting requirements in the same review.
PVC profiles and boards
Use the profile drawing or board section to establish material demand and tooling requirements. A shared material name does not make every screw and die combination interchangeable.
Selection
Points To Settle Before You Specify
Settle these points first and the quotation you receive can be compared line by line.
01
Formulation comes first
Provide the resin, filler proportion, additives and recycled-content plan. Identify changes that must be covered by one machine rather than quoting only a nominal PVC grade.
02
Define useful output
State the required output for a named product and formulation. Record the quality checks and run conditions used to evaluate that target.
Line Interfaces
Connecting It To The Rest Of Your Line
Die connection
Confirm flange dimensions, center height, melt connection and support for the proposed die. Supply photographs and drawings for retained tooling.
Utilities and controls
Confirm the electrical supply, cooling arrangements and start/stop or speed signals required by the existing line.
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Need an answer for your own material or product? Ask Maggie directly.
How should I choose between SJSZ models?
Use the formulation, product dimensions and required output to narrow the range, then check drive requirements and die compatibility. Screw size alone is not a complete selection method.
Can the extruder replace an existing unit?
A replacement needs a connection review covering the die flange, center height, footprint, feeding equipment, utilities and controls. Send the current nameplate and installation photographs.
Does the listed output apply to every PVC formulation?
No. Formulation, tooling and operating conditions affect output. The production target and acceptance method should refer to the material and product you intend to manufacture.
Configuration Request
Discuss Your SJSZ Conical Twin-Screw Extruder Configuration
Tell us what you need to produce, the required output and whether this is a new installation or a replacement. Share the information you already have so we can review the next configuration details with you.
SJSZ Series 
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