Professional Material Configuration & Standard Specifications
Our twin-screw extruder single-head heating tubes adopt full industrial-grade configuration with clear material standards and size specifications, supporting full customization:
1. Core Tube Material
Optional SUS304 / SUS316L / SUS310S seamless stainless steel tube: • SUS304: For conventional plastic extrusion (PP, PE, ABS), working temperature ≤280°C, anti-oxidation and cost-effective; • SUS316L: For modified plastics, filled plastic materials, weak corrosion resistance; • SUS310S: For high-temperature engineering plastics, working temperature up to 450°C, high temperature resistant and anti-thermal fatigue.
2. Internal Thermal Conductive Material
Adopt high-purity 99% magnesium oxide powder + imported nickel-chromium heating wire (Cr20Ni80). Uniform wire arrangement, high insulation resistance, no electric leakage under high temperature, stable thermal output, effectively avoiding local dry burning and tube bursting.
3. Standard Size & Power Specifications
• Diameter: 6mm / 8mm / 10mm / 12mm (conventional extruder reserved hole size) • Length: 50mm–3000mm customized according to barrel heating zone • Power density: 3–8W/cm² (professional low thermal density design for extruder long-term continuous operation) • Voltage: 110V / 220V / 380V optional • Wiring mode: single-end straight outlet / 90° bent outlet / high-temperature flexible wire outlet
Professional Technical Working Principle
The twin-screw extruder is divided into feeding section, pre-plasticizing section, melting section, homogenizing section and die head molding section, each with independent temperature process requirements. Yu'an single-head heating tube adopts integral compression filling process. The internal heating wire is evenly distributed, and the magnesium oxide layer is densely packed without gaps. After being inserted into the extruder barrel hole, it realizes 360° close-fitting heat conduction, eliminates air gap thermal resistance, and rapidly and uniformly heats the barrel wall. Cooperated with PID intelligent temperature control system, it realizes closed-loop constant temperature control, ensuring that the plastic melting fluidity is consistent and the extrusion pressure is stable.
Professional Technical Advantages for Extruder Working Conditions
1. Low Thermal Density Design & Anti-Burnout
Aiming at the 24-hour continuous operation characteristics of twin-screw extruders, we adopt industry-standard low thermal density design. Compared with ordinary high-power heating tubes that are easy to burn out, our products effectively reduce thermal attenuation, avoid tube wall oxidation and cracking, and adapt to long-term cycle heating of plastic equipment.
2. Zero Air Gap Heat Conduction & High Thermal Efficiency
Precision tube shrinking process ensures that the heating tube fits the barrel hole completely without air gap. The thermal conversion rate is up to 98%, which is 20%–30% higher than that of traditional ceramic band heaters. It solves the problems of slow temperature rise and large temperature difference between inside and outside of the barrel.
3. Zonal Independent Constant Temperature Control
Applicable Extruder Brands & Models
Yu'an single-head cartridge heaters are fully compatible with mainstream international and domestic twin-screw extruder brands, perfectly matching the barrel and die heating hole size, power density and high-temperature continuous operation standards of mainstream extrusion equipment. No modification required, direct replacement available.
1. Imported International Brands
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Coperion (Germany): Suitable for ZSK series high-torque twin-screw extruders, widely used in high-end plastic modification and compounding industries, stable under 300–450°C long-term high temperature.
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Leistritz (Germany): Matches precision multi-stage extrusion equipment for engineering plastics and medical-grade plastic processing with strict constant temperature requirements.
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Bausano (Italy): Compatible with parallel and conical twin-screw extruders for PVC pipe and profile extrusion, featuring low thermal attenuation and precise temperature control.
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JSW Toyo (Japan): Fully applicable to Japan JSW TOYO TEX series twin-screw extruders, suitable for high-precision polymer alloy compounding, electronic plastic and automotive plastic production, meeting Japanese equipment high-standard continuous heating requirements.
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Hyunwoo / SM (South Korea): Perfectly matches Korean Hyunwoo and SM brand extrusion equipment, widely used in plastic masterbatch, modified filling and high-precision extrusion molding, stable temperature output and long service life.
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EME (Brazil): Adaptable to EME industrial twin-screw extruders for South American market, applicable to plastic granulation and profile extrusion, adapting to long-cycle continuous production in tropical high-temperature environment.
2. Domestic First-Tier Brands
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Nanjing Keya: Matches HK/SK/MT series twin-screw extruders for plastic modification and granulation.
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Jwell Machinery: Compatible with full series parallel and conical extruders for profiles, pipes and granulation equipment.
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Kolwell & Kolk: Suitable for high-precision compounding extruders and laboratory small twin-screw equipment.
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Goldwell: Applicable to PVC and modified plastic high-speed extrusion production lines.
3. Universal Compatibility
Customizable for all non-standard brand twin-screw extruders, supporting personalized size, power and wiring method adjustment. It realizes universal replacement and upgrade of old equipment heating elements, solving the problems of easy burnout and inaccurate temperature control of original factory heating tubes.
Applicable Working Conditions & Scenarios
4. High Temperature Oxidation Resistance & Long Service Life
High-grade stainless steel tube body + dense magnesium oxide insulation layer effectively resists high-temperature oxidation and thermal corrosion in plastic melting atmosphere. The service life is more than 2 times that of ordinary heating tubes, reducing frequent replacement and equipment shutdown maintenance rate.
5. Plug-In Quick Installation & Low Maintenance Cost
Single-end wiring compact structure, suitable for dense installation of multi-section heating zones of extruders. No need to disassemble the whole heating jacket during replacement, which greatly saves maintenance time and production downtime loss, and is suitable for industrial continuous production lines.
6. Insulation & Safety Standard Compliance
After high-temperature aging and vacuum degassing treatment, the product has stable insulation performance, no electric leakage, no breakdown. It fully complies with CE industrial electrical standards and is safe for long-term industrial operation.
Applicable Extruder Working Conditions & Matching Materials
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Applicable equipment: Parallel twin-screw extruder, conical twin-screw extruder, plastic granulator, modified plastic compounding machine
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Applicable plastics: PE, PP, PVC, ABS, PC, PA, glass fiber modified plastics, flame-retardant modified plastics
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Applicable temperature range: Room temperature ~ 450°C segmented constant temperature heating
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Applicable positions: Extruder barrel segmented heating, transition section heating, die head local precision heating
6. Low Energy Consumption & Cost-Effective Operation
Close contact heating minimizes heat conduction loss. Under the same heating effect, the single-head heating tube has lower power consumption than traditional heating accessories. For large-batch and long-cycle plastic extrusion processing, it can effectively save electricity costs and improve overall production benefits.
Applicable Working Conditions & Scenarios
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Various twin-screw plastic granulators, modified plastic extruders
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PE, PP, PVC, ABS plastic profile and pipe extrusion equipment
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Extruder barrel segmented heating and die head local precision heating
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High-precision plastic molding production lines requiring strict temperature control
Factory Professional Customization & Testing Standards
Yangzhou Yu'an Electric Heating Technology Co., Ltd. focuses on R&D and customized production of industrial extruder-specific heating tubes. All products follow strict industrial production standards:
1. Strictly select SUS304/SUS316L/SUS310S tube materials and Cr20Ni80 heating wire according to equipment brand and working temperature; 2. Adopt vacuum degassing and high-temperature aging process to eliminate internal stress, prevent tube burst and burnout; 3. Full insulation pressure test before delivery, 100% no leakage, stable power output; 4. Support non-standard customization of special hole diameter, ultra-long size and bent wiring for imported brand extruders.
