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| Pre-insulated Tube |
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| Pre-insulated Tubing Bundle |
Pre-insulated Tubing Bundles (Steam & Electric Traced) |
ASEA METAL supplies pre-insulated tubing bundles in Korea for freeze protection and temperature maintenance on analyzer and instrument lines. Available as Type S (single passive insulation), Type ST (steam traced) and Type ET (electric traced) depending on site utilities and control requirements.
We manufacture pre-insulated tubing bundles in Korea for freeze protection, heat tracing and temperature maintenance in industrial plants, including maintenance upgrades on condensate return lines and utility runs. The carrier tubes can be specified to stainless grades such as ASTM A269 TP316L (316L carrier tube) to match corrosion and cleanliness requirements, with jacket options such as PVC / FR-PVC, TPU or LSZH per environment. Bundle types (Type ST / Type ET) and jacket systems are selected per project environment and installation method; aerogel insulation can be reviewed by request where ultra-low heat loss is required. We support pressure testing scope and MTC documentation (EN 10204 3.1 / 3.2) for export deliveries. Buyers looking for an O'Brien alternative or Parker Multitube alternative can share their incumbent datasheet so we can match bundle configuration and packing to site handling constraints.
Quick specs
| Bundle types | Type S / Type ST / Type ET |
| Typical uses | Analyzer sample lines, instrument impulse lines, steam/condensate, chemical feed, utilities |
| Tube materials | Stainless steel (304/316/316L), copper, nickel alloys, PFA/PTFE liners (by request) |
| Jacket options | FR-PVC (standard), TPU/TPE/LSZH (project dependent) |
| Standards | ASTM / IEEE 515; ATEX/IECEx for electric traced (as required) |
| Documents | Datasheets, pressure test records, jacket spark/continuity, MTR/MTC by request |
Request a quotation (RFQ)
For a quick quotation, ASEA METAL recommends sharing bundle type (S/ST/ET), tube count, tube material/size, design pressure/temperature, tracing requirement, jacket material, length, quantity and destination. Attach datasheet/drawing if available.
Contact / RFQ
How do I choose between steam traced (ST) and electric traced (ET)?
Steam traced bundles are common where plant steam/condensate handling is available. Electric traced bundles are used where steam is not reliable, tighter temperature control is needed, or in certain classified areas?—aligned to project electrical specifications.
Can bundles be cut to length in the field?
Depending on tracer type and project procedures, field cuts can be supported. Please confirm termination, re-sealing and re-test requirements in the RFQ.
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| Pre-insulated tubing bundle is comprised of one or more tube that are packaged in a weatherproofed, insulated jacket to provide freeze protection or temperature maintenance. These bundles utilize steam or electric tracing, and depending on the tracer used, can be cut to length in the field. Pre-insulated Tubing bundles are cost effective, reliable and offer consistent, quality performance for any application. |
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| Technical Highlights |
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Tracing strategy (Type S / ST / ET): Single-jacket bundles (Type S) suit stable process lines where only passive insulation is required. Steam-traced (Type ST) bundles maintain analyzer sample and impulse lines above dew point or freeze point using plant steam availability and condensate handling. Electric-traced (Type ET) bundles fit locations without reliable steam, tight temperature control, or classified areas where self-regulating or constant-wattage circuits must meet IEEE-style heat-tracing practice and project electrical specs. |
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Thermal insulation and jacketing: Non-hygroscopic glass fiber insulation limits in-leakage of moisture into the annulus, preserves low k-value over life, and keeps outer-surface temperatures within safe-touch limits where required. FR-PVC, TPU, TPE, or LSZH outer jackets are selected for UV exposure, chemical splash, flame spread, and smoke/halogen constraints on refineries, LNG sites, and offshore modules. |
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Tube materials and process compatibility: Process tubes in stainless (304/316/316L), copper, nickel alloys, or PFA/PTFE liners are matched to fluid, chloride level, and cleanliness (general service vs. analyzer-grade). Bundle design coordinates OD, wall, maximum lengths, bend radius after insulation, and connection style (compression, weld stub, or manifold block) with your P&ID and hook-up drawings. |
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Field routing and documentation: Factory-built lengths reduce on-site insulation labor; field cuts require agreed procedures for tracer termination, re-sealing the jacket, and re-test. Typical documentation includes insulation and tracing datasheets, test records for pressure and jacket spark/continuity, and material certificates for tubes and trace heaters aligned to your inspection and test plan (ITP). |
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| Three Type of Tubing Bundles |
| TYPE S |
Single tubing |
Steam supply, Condensate return, Water purge, Chemical feed, Air Lines |
| TYPE ST |
Steam Traced |
Analyzer Sample lines, Instrument impulse lines |
| TYPE ET |
Electric Traced |
(Pressure transmitters, Level transmitters, Flow transmitters) Process lines |
TYPE S(Single tubing)
Steam supply, Condensate return, Water purge, Chemical feed, Air Lines
TYPE ST(Steam Traced)
Analyzer Sample lines, Instrument impulse lines
TYPE ET(Electric Traced)
(Pressure transmitters, Level transmitters, Flow transmitters) Process lines
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| Our tubing solution solves the problem associated with freezing, dew point, viscosity and personnel protection application on industrial lines. |
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| Feature |
Benefits |
| Tube |
Provides proper material and size tubes for process condition and design. |
| FR-PVC Outer Jacket |
FR-PVC outer jacket helps ensure long-term product life under severe process and ambient conditions, and limits moisture and water infiltration into insulation and tubes. |
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Insulation |
High-performance non-hygroscopic glass fiber insulation provides excellent thermal efficiency (Low K-factor) and keeps the outer jacket temperature safe for personnel. |
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| Technical Specifications & Global Standards |
| Tube Materials |
Stainless Steel (304/316/316L), Copper, Monel, Hastelloy, PFA/PTFE |
| Jacket Material |
Flame Retardant PVC (Standard), TPU, TPE, or Low Smoke Zero Halogen (LSZH) |
| Temp. Range |
Maintenance up to 204°C (400°F) / Exposure up to 250°C (482°F) |
| Applications |
Refineries, Petrochemical plants, Power plants, LNG terminals, Offshore platforms |
| Compliance |
ASTM G14, ASTM D412, IEEE 515, ATEX/IECEx (for Electric Traced) |
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Why ASEA METAL is Your Strategic Partner
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1. Maximized Cost-Efficiency
Our Pre-insulated Tubing Bundles are designed for "Plug & Play" installation. Compared to traditional field-installed insulation, ASEA METAL bundles reduce installation time by up to 40%, significantly lowering site labor costs and project schedules.
2. Extreme Environment Durability
Engineered for the harshest conditions from the freezing Arctic to the scorching Middle East. Our FR-PVC and TPU jackets are UV-resistant, chemical-resistant, and flame-retardant, ensuring a product lifespan of over 20 years in offshore and refinery environments.
3. 100% Quality Assurance & Traceability
Every single meter of our bundle undergoes rigorous testing:
- Hydrostatic/Pneumatic Pressure Test: 1.5x design pressure to ensure zero leakage.
- Spark Test: 100% inspection of outer jacket integrity.
- MTR (Material Test Report): Full traceability for all tubes (SS316L, Alloy 400, etc.) and tracer cables.
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Related topics & terms
Quick Reference: Pre-insulated Tubing Bundle
ASEA METAL manufactures pre-insulated tubing bundles in Korea (Type ST/ET) for freeze protection and heat tracing.
Carrier tube can be ASTM A269 TP316L/TP304L with MTC (EN 10204 3.1).
Procurement search terms: pre-insulated tubing bundle Korea, ASTM A269 TP316L, heat traced bundle, MTC EN10204 3.1.
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