PIT

Pre-Insulated Tubing

In this tubing system, tubes are pre insulated with thermal insulation which is made of several layers and protected by outer jacket material in accordance with client requirements.

Overview

Techwin International’s pre-insulated tubing is engineered for optimal thermal efficiency in small-diameter pipelines used to transfer steam, condensate, liquid, and gas. This multi-layer thermal insulation tubing solution is designed to minimize heat loss, offering a cost-effective solution compared to traditional field insulation methods. Available in various lengths and configurations, these tubing systems are tailored to meet project-specific requirements.

Advantages

Effortless and quick installation, which lowers cost.
Available in extended lengths that reduce the need for frequent connections, cutting down material waste.
Compact design for minimal spatial demands.
Durable tubing that is maintenance-free and well-protected against mechanical damage, abrasion, and corrosion
Certified for use within hazardous locations.

Types

1. Electrical traced tubing with constant wattage heating cable

Techwin International’s Electrical Traced Tubing with Constant Wattage Heating Cable is engineered to sustain temperatures up to 200°C, with a maximum exposure limit of 260°C. Their key benefits are:

Precision-cut lengths to meet specific requirements,
Consistent power output
There’s no need for circuit breaker oversizing as there’s no inrush current at startup.

2. Electrical heat traced tubing with Self regulating heating cable:-

The Self-Regulating Heating Cable option maintains temperatures up to 121°C and withstands exposure up to 250°C. Their key benefits are:

Automatically adjusts power output in response to temperature changes,
Significantly reducing the risk of overheating.
Cut to length for your precise needs.

Keynotes

Applications

Steam supply and condensate collection lines.
Instrument impulse lines for accurate transmission of readings.
On-line analyzer sampling lines

Rating & Performance

Ensures a safe outer jacket temperature under 60°C and an inner fluid temperature above 204°C with our Pre-insulated tubes. The insulation materials that produce these tubes, such as fiberglass and aerogel, can withstand temperatures up to 1200°F (649°C).

Insulation

Standard fiberglass insulation is employed for typical thermal protection. Our Pre-insulated tubes use Aerogel insulation for high-temperature applications exceeding 400°C, providing exceptional thermal resistance.

Outer FR-PVC Jacket

The tubing features a UV-resistant FR-PVC jacket to withstand corrosive elements, water, oils, acids, alkalis, and other chemicals. It is designed to tolerate extreme temperatures ranging from -40 to 105°C, with a safe surface temperature limit of 80°C.

Model Option

Below is an exmple of one model along with other available options we provide, contact us in case of any doubt

Some PIT model examples

We also provide custom tubing solutions apart from these options shown, let us know.

Heat traced line with various heating cable technology	Constant Wattage	Self Regulating heating cable			Power-Limiting
Max. Maintain T	200°C	65°C	110°C	121°C	230°C
Max. Exposure T	250°C	85°C	110°C	250°C	260°C
T-class	By design	T6	T4	T3 (T2-20XTV)	By design
Max. Circuit Length	150m	200m	115m	245m	450m
Max Power Output @ 10°C	60W/m	30W/m	66W/m	66W/m	66W/m
Nominal Voltage	230V	230Vac	230Vac	230Vac	230V