Established in 2021 in Shengzhou, Zhejiang Province—an industrial epicenter celebrated for electromechanical components—Jingwei Electric Heating Technology Co., Ltd. builds upon a rich, foundational legacy exceeding 25 years of specialized electric heating element manufacturing. Through sustained capital investment, talent acquisition, state-of-the-art automated machinery, and advanced quality management frameworks, we have evolved from traditional fabrication into a premier smart thermal technology enterprise.
Operating within our modern 2,000+ square meter standardized production facility, our operations integrate rigorous scientific research, computerized numerical bending, automated MgO filling, and multi-stage testing. Our dedicated team specializes in robust stainless steel heating tube configurations that solve critical thermal balance, anti-condensation, and high-efficiency defrosting challenges for refrigeration equipment, cold storage air coolers, and industrial electrical enclosures across global markets.
Why engineered defrost heaters are essential components for industrial air chillers, cold-storage evaporators, and climate-controlled electrical enclosures.
In refrigeration air coolers, sub-zero evaporator surfaces inevitably accumulate moisture, generating dense frost blankets. Left unchecked, ice insulates heat exchange coils, chokes air channels, causes fan blade seizure, and forces compressors into thermal overload. Jingwei defrost heaters provide calibrated watt-density bursts that rapidly liquefy frost without elevating cabinet temperatures, restoring thermodynamic equilibrium.
Frequent transitions between -40°C freezing cycles and active +100°C defrost phases generate aggressive condensation. Using inferior metals leads to pitting corrosion, outer sheath oxidation, and water ingress that breaches electrical insulation. Our choice of SS304, high-chromium SS310S, and SS316 along with moisture-proof vulcanized rubber terminations ensures absolute ingress resistance.
Electrical cabinets, control consoles, and telecommunication shelters deployed in variable climates suffer catastrophic failure when interior moisture drops below the dew point. Jingwei stainless steel finned and tubular elements generate uniform convection currents, maintaining positive internal air pressure and raising temperatures slightly above ambient levels to eliminate dew formation.
Explore our industrial-grade heating elements designed for refrigeration units, air chillers, baking ovens, deep fryers, and specialized thermal machinery.
Specialized tubular heating element designed for commercial and domestic freezers. Ensures rapid cyclic thawing, maintains evaporator cleanliness, and protects internal cold air circulation pathways.
Heavy-duty defrost element optimized for commercial cold storage unit coolers. Features hermetically sealed terminals and custom bending profiles to match multi-row finned coil packs.
Treated with specialized high-temperature oxidation green annealing. Creates an impenetrable passivation layer that eliminates residual tube stress, enhances bendability, and elevates corrosion resistance.
Engineered for dry-firing high-heat industrial ovens, tunnel dryers, and commercial bakery ranges. Provides uniform radiant heat distribution up to 800°C without sheath distortion.
Continuous helically wound stainless steel fins dramatically expand surface heat dissipation area. Boosts convective heat transfer rates by up to 2.5x in forced-air ventilation and enclosure warming systems.
Custom flat or tubular geometry engineered for direct oil immersion heating. Optimized low surface watt density prevents oil carbonization while delivering quick thermal ramp-up times.
Versatile heating elements customizable by bend radius, threaded fittings, mounting brackets, and specialized wire leads to match proprietary customer machinery frames.
Specially formulated internally to resist air oxidation and thermal degradation in non-liquid operating settings. Excellent life span even under fluctuating air velocities.
Developed for niche equipment including commercial dishwashers, sterilizers, medical incubators, and enclosure de-icing coils with strict dimensional tolerances.
Jingwei provides end-to-end custom engineering. We modify sheath diameters, total lengths, cold ends, shape geometries, and electrical parameters to fit your exact evaporator fin blocks.
Our state-of-the-art hydraulic tube drawbenches and automatic straightening equipment support ultra-long single-pass defrost heating elements without tube sagging or internal wire misalignment:
| Tube Diameter (Φ) | Standard Shapes | Maximum Extended Length |
|---|---|---|
| 6.5 mm | Single tube, U-Type, Custom Formed | Longest up to 4.0 Meters (4000mm) |
| 8.0 mm | Single tube, A-A type, U, UB, B-Type | Longest up to 7.4 Meters (7400mm) |
| 10.7 mm | Heavy-duty industrial custom shapes | Extended industrial custom lengths |
Figure 1: Custom Tube Geometries, Bending Profiles (A-A, U, UB, B Type), and Dimension Schematics
Figure 2: Dimensional Length Selection, Cold Zone Allocation, and Terminal Lead Connection Guide
Accurate length selection and cold zone calibration prevent hot-spot damage to internal ABS/HIPS plastic liners or polyurethane insulation within refrigerators. Our engineers calculate the exact heated length (Lh) and unheated inactive ends (Lu) based on your coil core measurements.
Combining 25+ years of craft mastery with agile supply chains, transparent direct-factory pricing, and robust quality guarantees.
Material integrity begins at the source: certified SS304/SS310S/SS316 tubes, premium high-temperature magnesium oxide powder, and precision resistance heating wires. Our independent QA department enforces a rigorous triple-tier inspection protocol: incoming raw material chemical assay, in-line process monitoring, and 100% finished product dielectric testing. Verified customer quality pass rate stands at >99%.
No application is generic. We deliver tailor-made tube diameters, power wattages, terminal waterproof seals, and tailored bend angles according to client engineering prints. Advanced surface treatments are available including high-temperature vacuum annealing (green finish) for maximum malleability and laser surface etching for permanent component traceability.
Enjoy direct factory-to-business wholesale pricing with zero middleman markups, lowering procurement overhead for OEM/ODM projects. Supported by an established ecosystem of over 1,000 component suppliers and 45 strategic partner factories, Jingwei provides one-stop consolidation for heating tubes, thermostats, silicone lead wires, and mounting brackets.
Accessible low minimum order quantity of only 100 pieces supports engineering prototypes and small batch pilots. Standard delivery cycles range from 7 to 20 days with express expedited dispatch. Backed by global air/sea multimodal logistics, regular exhibits at premier international venues like the Canton Fair, and a complete 12-month free-replacement warranty for non-human defects.
From deep freeze cold-storage warehouses to delicate offshore electrical control cabinets, Jingwei heating solutions deliver stable, uninterrupted thermal performance.
Cold-storage air coolers run continuous duty cycles. Jingwei defrost tubes quickly purge frost buildup on evaporator fins during scheduled reversal cycles, cutting defrost power consumption and preventing food spoilage from thermal shock.
Harsh outdoor electrical boxes and wind turbine nacelles face condensation accumulation that causes flashovers and terminal short circuits. Our space-saving tubular heaters maintain an optimized microclimate, keeping moisture levels well below critical thresholds.
Glass-door reach-in freezers require uniform, low-profile heating elements embedded within evaporator pans and drain channels. Our flexible defrost heaters prevent drain tube ice dams, eliminating messy water accumulation.
Reefer containers experience severe mechanical vibrations, salty ocean spray, and broad temperature swings. Heavy-duty stainless steel walls and vulcanized rubber sealed terminations prevent moisture penetration and element fracture during transit.
SS310S dry heating elements withstand long run cycles in commercial bakeries, powder-coating ovens, and composite curing chambers, delivering precise radiant heat transfer with zero sheath degradation.
Finned heating elements installed in air-handling ducts maximize heat exchange per square inch, providing compact and energy-saving thermal management for commercial HVAC air handlers and test equipment.
Everything you need to know about purchasing, specifying, and customizing electric defrost heating elements for your cooling equipment.
Our minimum order quantity is just 100 pieces, making it practical for equipment engineers to validate custom designs without excess stock risk. Standard production turnaround is 7 to 20 business days depending on order volume. Expedited production lanes are available for emergency maintenance or production-line shutdowns.
Green annealing (high-temperature controlled atmosphere heat treatment) produces a dense, inert chromium-rich oxide film on the stainless steel surface. This process relieves internal metallurgical bending stress, makes the tube highly resistant to galvanic pitting in humid ice-water cycles, and allows complex bending without micro-fracturing the outer sheath.
Defrost heaters operate in constant wet-dry cycles. We utilize specialized compression-molded neoprene end caps or vulcanized high-grade silicone rubber seals bonded directly to moisture-resistant leads. Terminals are 100% submersion tested under high dielectric potential (1500V–1800V) to verify that leakage current is below 0.5mA.
Yes. Our technical team regularly builds from client CAD drawings (.dwg, .dxf, .step) or physical reference samples mailed to our Shengzhou facility. We inspect tube wall thickness, resistance wire alloy composition, MgO density, and cold zones to provide a detailed prototype quotation within 24 hours.
Contact our engineering team today for technical support, sample requests, or high-volume wholesale pricing. Our thermal specialists respond with formal technical proposals and pricing within 24 business hours.