Business line 01
Insulation Materials
Insulating paper, flexible composites, rigid laminates, PET and polyimide film, impregnating varnishes, sleevings, binding tapes and drawing-based machined parts.
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Hengsheng Technology · Since 2008
Insulation Materials & Production Equipment
Hengsheng Technology manufactures insulation materials for transformers, motors and reactors — and the equipment used to produce them.
27 materials from Class A to Class H: insulating paper, flexible composites, laminates, films, varnishes, sleevings and tapes, supplied to specification and to drawing. The machinery portfolio is being published — models and capacities are available on request.
2008
Manufacturing since
27
Insulation materials on data pages
A–H
Insulation classes supplied
[INSERT] countries
Export markets served
Two business lines
Materials and the machinery behind them
Hengsheng manufactures insulation materials for the electrical industry and supplies production equipment for insulation manufacturers. Choose a line to see the range.
Business line 02
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Machinery & Equipment
Production equipment for insulation manufacturers. The equipment portfolio is being documented — models, capacities and specifications are published once confirmed.
Specifications coming soon
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Product range
Five material families, one supply chain
Every product page carries the technical data table, the applications it is specified for and the temperature class, so you can shortlist before you request a sample.
Transformer Insulation Materials
From turn-to-turn and layer insulation to end and structural support: a practical range for oil-immersed and dry-type transformers.
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Flexible Composite Materials
Class F and Class H composites for motor slot, phase and turn insulation and transformer layer insulation.
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Laminates, Boards & Films
3240 and FR-4 laminates, epoxy prepreg netting, PET film and drawing-based machined insulation parts.
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Impregnating Varnishes
Class B, F and H impregnating varnishes for dip, VPI and trickle processes in motors, transformers and reactors.
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Sleevings & Binding Tapes
PVC, acrylic and silicone-coated fiberglass sleevings, cotton tape, polyester heat-shrink tape and fiberglass tape.
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Manufacturing
Insulation is part of the process, not a standalone material
We treat it that way — thickness, adhesive and resin content, breakdown voltage and tensile strength are controlled against the relevant product standard at every process step.
- Incoming
- Slitting / laminating
- Die-cutting / machining
- Inspection
- Packing
- Delivery
The challenge with insulation materials is not a single sample but batch-to-batch consistency. We manage thickness, adhesive/resin content, breakdown voltage and dimensions through defined process control points, so each batch can be inspected and traced.
01
Incoming & in-process control
Paper, film, glass cloth, aramid paper and resin checked against specification.
02
Batch traceability
Raw-material lot, production date, inspection record and shipment lot recorded.
Applications
Built for the equipment you are producing
Find the material by application — the same information is used in our selection index and by our engineers when reviewing a request.
Oil-Immersed Transformers
Turn-to-turn and layer insulation
Dry-Type Transformers
Layer insulation in cast-resin coils
Electric Motors & Generators
Slot, phase and turn insulation
Reactors
Coil reinforcement insulation
Instrument Transformers
Turn insulation in voltage transformers
Switchgear & Electrical Equipment
Barriers and arc chutes
Send a drawing, a thickness and a quantity
Tell us product, thickness or width, temperature class, quantity and delivery form. For machined parts attach a PDF/DWG/STEP drawing. Our export team replies within one business day.