Turbulence strip

Turbulence Strips

Turbulence strips are installed inside tubes to improve heat transfer by creating swirl flow and increasing fluid mixing. By disturbing the boundary layer along the tube wall, they make heat exchange more effective, especially in applications where the flow would otherwise remain relatively stable.

In practical operation, the presence of turbulence strips significantly increases the internal heat transfer coefficient. The fluid is forced into a spiral or swirling motion, which enhances contact between the fluid and the tube wall and reduces thermal resistance.

At the same time, well designed turbulence strips do not necessarily lead to a large increase in pressure drop. With optimized geometries such as perforated strips or specially formed spiral shapes, the flow path is guided in a controlled way. This allows improved heat transfer while keeping energy consumption within a reasonable range.

Another advantage is their effect on flow induced vibration. In certain applications, especially where air or gas flows across structures, periodic vortex shedding can cause vibration and noise. Spiral or twisted inserts help break up these regular vortex patterns, reducing vibration and improving operational stability.

Typical Technical Parameters

Material: carbon steel, stainless steel, aluminum alloys or other corrosion resistant alloys
Strip thickness: 0.5 mm to 3.0 mm
Strip width: 5 mm to 30 mm depending on tube diameter
Twist ratio or pitch: 1.5D to 10D where D is tube inner diameter
Perforation ratio: 10 percent to 40 percent for perforated designs
Applicable tube inner diameter: 10 mm to 100 mm
Operating temperature: up to 500°C depending on material
Operating pressure: typically up to 10 MPa depending on system design

Performance Characteristics

Improves internal heat transfer coefficient by 30 percent to 150 percent depending on flow conditions
Promotes uniform temperature distribution inside the tube
Reduces fouling tendency by limiting boundary layer buildup
Maintains a reasonable pressure drop when properly designed
Enhances flow stability and reduces vibration in certain applications

Applications

Turbulence strips are widely used in heat exchangers, boilers, condensers, and various process equipment in petrochemical, power generation, and HVAC systems. They are particularly suitable for situations where the internal heat transfer coefficient is the limiting factor or where improved thermal performance is required without major equipment modification.

FAQ：

1. Are you manufacturer or trader?

We are titanium tube manufacturer producing from melting titanium sponge, extruding hollow billet, rolling to finished tubes and destructive test mechanical test, chemical analysis, non-destructive tests like Ultrasonic test, Eddy current test, Pneumatic test and hydrostatic test are available in house.

Beside titanium tube production line, we also have finning lines. Our factory is still expanding and will invest more on finning facilities.

2. How many workers are there in your factory?

Till 2026, we have 210 staffs.

3. How fast can you deliver the materials?

It depends on the size and quantity, the standard time is 45 days.

4. What is the payment term you can offer?

Standard term is 30% T/T in advance, balance before shipment. L/C is also acceptable. It can be discussed based on different project.

5. Can you provide third party inspection service?

Yes, we can arrange BV/TUV/SGS/LR etc inspection. EN10204 3.2 certificate can be provided.

6. What is your annum turnover?

For 2025, we have had 100 million US dollars turnover for our whole group including factory and the export company.

7. What is the percentage of your export and domestic market share?

Approximately 30% of orders are for export and 70% are for domestic market. However we are aiming to increase more investment on export and hopefully the percentage can be 50-50 in the near future.

8. What country are your clients from?

We are working with overseas clients from Europe like Netherland, France, Italy, Spain etc, USA, Korea, Japan, Indonesia, Vietnam, Singapore, Chile, Argentina, Brasil, Russia, Belarus, Uzbekstan. Basically we work with clients from all over the world. We welcome every client to approach us for inquiry, and we will be ready to serve our clients. We also welcome our clients to visit our factory for onsite audit.