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Product

subsea pipeline direct electrical heating (DEH) cable DNV-RP-F104 / IEC 60502-2 DEH12 kV – 36 kV (-20 to +90 °C)Non-Magnetic Stainless-Steel / Coppe

DEH 12–36 kV AC Single-Core Subsea Pipeline Direct Electrical Heating Dynamic & Static Piggyback CableDNV-RP-F104 / IEC 60502-2 DEH — 12 kV – 36 kV — -20 to +90 °C Subsea & Offshore Cable

DEH 12–36 kV AC Single-Core Subsea Pipeline Direct Electrical Heating Dynamic & Static Piggyback Cable (DNV-RP-F104 / IEC 60502-2 DEH) engineered for 12 kV – 36 kV service across -20 to +90 °C (min. bend radius 15 × OD).

Water-resistant

Flame-retardant

Oil-resistant

Approved

Configuration

Order designation: DEH 12–36kV Pipeline Config A
Outer Ø ≈: 32.0 mm
Net weight ≈: 1,850 kg/km
Tensile rating ≈: 85.0 kN
Core / stranding: Compacted / Class 5 Cu/SnCu + FO

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 12 kV – 36 kV
Operating temp.: −20…+90 °C
Min. bend radius: 15 × OD
Core / conductor: Large-Section Fl
Outer protection: Non-Magnetic Sta
Standard: DNV-RP-F104 / IE

Typical values for this cable type, based on DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is DEH 12–36kV Pipeline right for your machine?

Fixed installation

Suitable

Stranded piggyback along the subsea production flowline to deliver continuous AC trace heating over multi-kilometre tiebacks.

Immersion & wet locations

Suitable

Cross-linked XLPE insulation, metallic water barrier and heavy PE/PP outer protection withstand deepwater hydrostatic pressure and wet-mat

Offshore platform & shipboard deck trays

Suitable

Dynamic riser and static seabed configurations resist marine installation tension, bend stiffeners and offshore J-tube pull-in.

Furnace, kiln & high-temp zone

Not suitable

Subsea XLPE DEH pipeline heating cable is rated to +90 °C conductor temperature; do not use in high-temperature industrial furnaces.

Use MI Heating Cable

Energy chain / drag chain

Not suitable

Large-cross-section subsea DEH power cable is not engineered for repetitive drag-chain flexing.

Use Silicone Multi-Core

Typical machinesOil & Gas CableSubsea Oil & Gas Flowline Hydrate PreventionDeepwater Tieback Direct Electrical Heating (DEH)FPSO & Semi-Submersible Dynamic DEH RisersSubsea Wax & Flow Assurance Systems

Construction

Layer by layer

Shown: DEH 12–36kV Pipeline (DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification) featuring large-section flexible copper conductor (1/c), 12-36 kv triple-extruded xlpe insulation and non-magnetic stainless-steel / copper armour (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Large-Section Flexible Copper Conductor	High-current stranded copper core for pipeline electrical heating
2	12-36 kV Triple-Extruded XLPE Insulation	Conductor screen + HV XLPE dielectric + insulation screen
3	Semi-Conducting Polyethylene (PE) Sheath	Extruded semi-conducting PE jacket allowing capacitive seawater transfer
4	Non-Magnetic Stainless-Steel / Copper Ar	Low-loss non-magnetic wire armour for single-core AC operation

DEH 12–36kV Pipeline — Standard Subsea & Offshore Execution

Built to DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification with large-section flexible copper conductor (1/c) and non-magnetic stainless-steel / copper armour

DEH 12–36kV Pipeline — Custom Continuous Winch / Reel Length

Available in custom continuous subsea winch, tow or seabed lengths with water-blocked terminations

DEH 12–36kV Pipeline — Hydrostatic, Tensile & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, optical OTDR / DC resistance & tensile test report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 12 kV – 36 kV (DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification)
Core / conductor construction: Large-Section Flexible Copper Conductor (1/C) — High-current stranded copper core for pipeline electrical heating
Primary dielectric / buffering: 12-36 kV Triple-Extruded XLPE Insulation — Conductor screen + HV XLPE dielectric + insulation screen

Thermal

Continuous operating temperature: −20…+90 °C (subsea & offshore duty)
Hydrostatic & thermal stability: Verified thermal and hydrostatic stability per DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel winch reel

Mechanical

Outer protection / armouring: Non-Magnetic Stainless-Steel / Copper Armour — Low-loss non-magnetic wire armour for single-core AC operation
Minimum bending radius: 15 × OD
Armour, strength member & mechanical duty: Semi-Conducting Polyethylene (PE) Sheath — Extruded semi-conducting PE jacket allowing capacitive seawater transfer

Resistance

Seawater, hydrostatic & hydrolysis resistance: Engineered for continuous seawater immersion, pressure cycling and hydrolysis resistance per DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification
Oil, drilling mud & abrasion resistance: Resistant to marine hydraulic oils, salt mist, winch sheave wear and seabed abrasion per DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification
Environmental & test standards: IEC 60228 / IEC 60794 / ITU-T G.972 / IEEE 1580 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: DEH 12–36kV Pipeline
Sheath colour & metre marking: Continuous metre-marked black outer finish (Non-Magnetic Sta)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard DEH 12–36kV Pipeline subsea & offshore configurations

Manufactured to DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification for subsea, oceanographic, ROV, seismic and offshore applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Breaking / tensile kN ≈	Min. bend R mm
DEH 12–36kV Pipeline Construction Schedule (−20…+90 °C)
DEH 12–36kV Pipeline Config A	3×25–50 mm² (or 3P+FO Composite)	Compacted / Class 5 Cu/SnCu + FO	32.0	1,850	85.0	380
DEH 12–36kV Pipeline Config B	3×95–150 mm² (or Heavy EOM)	Compacted / Class 5 Cu/SnCu + FO	48.5	4,280	130.0	580
DEH 12–36kV Pipeline Config C	3×240–400 mm² (or Trunk HV/MV)	Compacted Cu + Lead/Armour + FO	78.0	9,650	210.0	950

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core cross-sections, pair/fibre counts, armour breaking loads and continuous winch/seabed lengths available per DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
3×25–50 mm² (or 3P+FO Composite)	0.50	12 kV – 36 kV (Subsea/MV)	−20…+90 °C
3×95–150 mm² (or Heavy EOM)	0.19	12 kV – 36 kV (Subsea/MV)	−20…+90 °C
3×240–400 mm² (or Trunk HV/MV)	0.08	12 kV – 36 kV (Trunk/HV)	−20…+90 °C

Every production length undergoes routine conductor DC resistance, high-voltage dielectric or OTDR continuity and dimensional verification.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor resistance, optical OTDR continuity & dimensional verification (DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification)	DC resistance at 20 °C / optical attenuation and outer diameter within DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification)	Zero dielectric breakdown and verified insulation resistance for 12 kV – 36 kV rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile breaking load & water-blocking qualification (DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification)	Verified subsea pressure integrity, torque-balanced tensile performance and thermal stability across −20…+90 °C	Type qualification & periodic lot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

DNV-RP-F104 / IEC 60502-2 DEH CompliantEN 10204 3.1 Factory Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX DEH 12–36kV Pipeline DNV-RP-F104 / IEC 60502-2 DEH 12 kV – 36 kV CE

Delivery form: Heavy-duty export fumigated wooden drums, steel oceanographic winch reels or submarine turntables
Standard lengths: 500 m, 1,000 m, 3,000 m, 6,000 m or custom continuous subsea lengths
MOQ: 100 m (standard configurations) · 500 m (custom subsea builds)
Lead time: 2–6 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFDEH 12–36 kV AC Single-Core Subsea Pipeline Direct Electrical Heating – technical datasheet3 sizes · construction, technical data, approvals XLSXDEH 12–36kV Pipeline spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-26
Updated: 2026-10-26

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define DEH 12–36kV Pipeline (DEH 12–36 kV AC Single-Core Subsea Pipeline Direct Electrical Heating Dynamic & Static Piggyback Cable)?

DEH 12–36kV Pipeline (DEH 12–36 kV AC Single-Core Subsea Pipeline Direct Electrical Heating Dynamic & Static Piggyback Cable) is manufactured in accordance with DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification for 12 kV – 36 kV service over -20 to +90 °C. Its 4-layer construction comprises large-section flexible copper conductor (1/c), 12-36 kv triple-extruded xlpe insulation and non-magnetic stainless-steel / copper armour.

What is the minimum bending radius and operating temperature range for DEH 12–36kV Pipeline?

The minimum bending radius for DEH 12–36kV Pipeline is 15 × OD across its continuous operating temperature range of -20 to +90 °C, ensuring mechanical, hydrostatic and dielectric reliability in subsea and offshore service.

How are the concentric layers of DEH 12–36kV Pipeline arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Large-Section Flexible Copper Conductor (1/C) — High-current stranded copper core for pipeline electrical heating; (02) 12-36 kV Triple-Extruded XLPE Insulation — Conductor screen + HV XLPE dielectric + insulation screen; (03) Semi-Conducting Polyethylene (PE) Sheath — Extruded semi-conducting PE jacket allowing capacitive seawater transfer; (04) Non-Magnetic Stainless-Steel / Copper Armour — Low-loss non-magnetic wire armour for single-core AC operation.

What factory test certificates are supplied with DEH 12–36kV Pipeline?

Every production drum of DEH 12–36kV Pipeline undergoes routine conductor resistance/OTDR continuity, high-voltage dielectric and dimensional testing per DNV-RP-F104 & IEC 60502-2 12–36 kV Subsea Pipeline Direct Electrical Heating Specification, and is delivered with an EN 10204 3.1 factory test certificate.

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03Message for our engineers

DEH 12–36 kV AC Single-Core Subsea Pipeline Direct Electrical Heating Dynamic & Static Piggyback Cable

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