Overview
Glass fiber tape reinforced thermoplastic polyethylene composite pipe (GFT-RTP) is next generation technology for industrial pipeline installations and infrastructure. It’s a composite pipe with a high strength glass fiber reinforced core between an inner and outer layer of high-density polyethylene. It is available in small and large diameters.
The result is a pipe product that is stronger, thinner, lighter and cheaper to manufacture than HDPE pipe or other FRP or GRP products. Currently in use in the oil industry, it has proved to be an unbeatable alternative to other forms of pipe. This superior performance, combined with our ability to manufacture GFT-RTP in continuous lengths, makes it suitable for any industrial application.
GFT-RTP is a patented product, manufactured in China and able to be shipped anywhere in the world.
- We can supply you directly from China, as manufactured by Baoji Tianlian Huitong Composite Materials Co Ltd, for whom we hold agency.
- Or, if you have a large demand for the product, contact us to discuss setting up a factory and having the rights to manufacture GFT-RTP in your country.
View related downloads for further technical information.
Glass Fiber Tape Reinforced Thermoplastic Pipe (GFT-RTP)
Technology Development and Equipment Supply Ltd are proud holders of Agency for Baoji Tianlian Huitong Composite Materials Co., Ltd, who are the exclusive manufacturers in China of our GFT-RTP, for which we hold patents.
1. Company Profile
Baoji Tianlian Huitong Composite Materials Co., Ltd. was established in July 2015 with a registered capital of RMB 102 million. We currently hold 48 technical patents and have obtained multiple international certifications, including API Q1 and API 15S. The company is a national-level high-tech enterprise and possesses a Shaanxi Provincial Enterprise Technology Center and a CNAS-certified laboratory. The company has introduced the world's leading GFT-RTP production technology and manufactures multiple series of RTP products. Our products are widely used in fields such as oil and gas production and transportation, mining and slurry transportation, municipal water conservancy, gas energy storage (hydrogen and carbon dioxide), and chemical production. By the end of 2025, our company had completed the manufacturing, domestic and international delivery, and installation and operation of 16,000 kilometers of RTP products in various specifications, making us a leading enterprise in RTP research and development, manufacturing, installation, and operation internationally.
The company has obtained: API Q1 Quality Management System Certification, API
15S Product Certification; ISO 9001 Certification, ISO 14001 Certification, ISO 45001 Certification, Intellectual Property Management System Certification, and HSE Certification. It holds 48 patents, including 12 invention patents.
API Q1 Quality Management System Certificate
API 15S Product Certificate
2. Product Introduction
Reinforced Thermoplastic Pipe (RTP) is generally composed of three layers: an inner liner layer, a reinforcement layer, and an outer protective layer. The inner liner layer serves as the medium transmission layer and is formed by hot-melt extrusion of various polymer materials. The reinforcement layer is made by circumferentially winding various fibers or fiber prepreg tapes around the outer surface of the inner liner layer and mainly bears the pressure-bearing capacity of the composite pipe. The outer protective layer is formed by hot-melt extrusion coating of polymer materials onto the outer surface of the reinforcement layer, mainly protecting the composite pipe from external impacts and various types of damage
2.1 Glass Fiber Composite Tape
The company has developed a glass fiber composite tape (GFT) specifically for RTP reinforcement. GFT is a high-strength, high-toughness tape that overcomes the shortcomings of other glass fiber prepreg tapes on the market, such as high brittleness, susceptibility to bending and fracture, and difficulty in fusion bonding. It avoids the problems of cracking and delamination between the reinforcement layer and the inner/outer layers, as well as between reinforcement layers, in traditional glass fiber reinforced RTP. It also solves a series of issues associated with traditional glass fiber reinforced RTP, such as large coil diameters and relatively high requirements for construction and installation, giving it broad market application prospects in many fields. GFT's performance is similar to that of aramid tape, but its cost is far lower than aramid, making it more economical. GFT has complete intellectual property rights and is exclusively produced by us.
The reinforcement layer of GFT-RTP is glass fiber composite tape (GFT), which is a patented technology product.
GFT-RTP Dimensions
| Type | Thickness (mm) | Width (mm) | Type | Thickness (mm) | Width (mm) |
|---|---|---|---|---|---|
| GFT-75-05 | 0.5 (+0.07/−0.07) | 75 (+3/−7) | GFT-200-07 | 0.7 (+0.07/−0.07) | 200 (+3/−7) |
| GFT-100-05 | 0.5 (+0.07/−0.07) | 100 (+3/−7) | GFT-250-07 | 0.7 (+0.07/−0.07) | 250 (+3/−7) |
| GFT-150-05 | 0.5 (+0.07/−0.07) | 150 (+3/−7) | GFT-300-07 | 0.7 (+0.07/−0.07) | 300 (+3/−7) |
| GFT-200-05 | 0.5 (+0.07/−0.07) | 200 (+3/−7) | GFT-150-09 | 0.9 (+0.07/−0.07) | 150 (+3/−7) |
| GFT-250-05 | 0.5 (+0.07/−0.07) | 250 (+3/−7) | GFT-200-09 | 0.9 (+0.07/−0.07) | 200 (+3/−7) |
| GFT-300-05 | 0.5 (+0.07/−0.07) | 300 (+3/−7) | GFT-250-09 | 0.9 (+0.07/−0.07) | 250 (+3/−7) |
| GFT-150-07 | 0.7 (+0.07/−0.07) | 150 (+3/−7) | GFT-300-07 | 0.9 (+0.07/−0.07) | 300 (+3/−7) |
| Type | GFT-05 | GFT-07 | GFT-09 |
|---|---|---|---|
| Longitudinal tensile strength/MPa | ≥237 | ≥339 | ≥396 |
| Linear density of glass fiber | 1200tex | 2400tex | 3600tex |
| tensile strength of glass fiber/MPa | ≥0.45 N/TEX | ≥0.45 N/TEX | ≥0.45 N/TEX |
| Type | Tensile strength (MPa) | Time (h) | Requirement |
|---|---|---|---|
| GFT-05 | 118.5 | 1000 | No-break |
| GFT-07 | 169.5 | 1000 | No-break |
| GFT-09 | 198 | 1000 | No-break |
2.2 GFT-RTP
We have independently developed a complete set of production technology for continuous glass fiber tape reinforced thermoplastic composite pipe (GFT-RTP) and successfully developed the core equipment for this pipe — the GFT-dedicated winding machine, which has now achieved industrialized and stable mass production. Leveraging this breakthrough in core equipment, we have built a complete largediameter GFT-RTP production line, and for the first time internationally, overcome the challenge of continuous production of large-diameter GFT-RTP, forming a high-end complete set of manufacturing equipment with independent intellectual property rights. At the same time, addressing pain points in engineering applications, we have developed economical and reliable pipe connection technology that fully meets on-site construction needs. Furthermore, we have completed the research, development, and industrialization of recycling technology for GFT-RTP production waste and failed pipes, establishing a complete technical system covering pipe manufacturing, on-site installation and resource recovery of waste pipes. The entire GFT-RTP technology
portfolio includes 22 patents, of which 12 are invention patents.
Large-Diameter GFT-RTP
According to the temperature of the transported medium, GFT-RTP is classified into three types: high-temperature type GFT-RTP III (medium temperature 85–110°C), medium-temperature type GFT-RTP II (medium or ambient temperature 60–85°C), and normal-temperature type GFT-RTP I (medium or ambient temperature below 60°C).
2.2.1 GFT-RTP III
The pipe wall structure of GFT-RTP III is: PVDF/connection resin/PERT/GFT/PERT
3D diagram and physical product illustration of PVDF/bonding
Resin/PERT/GFT/PERT (the inner liner layer is co-extruded in three layers, with the black portion being the bonding resin)
GFT-RTP III is resistant to high temperatures and high pressures and features high barrier properties and corrosion resistance. It can transport oil-water mixtures, natural gas, crude oil, etc. under high temperature and high pressure, making it suitable for use as gathering and transportation pipelines in oil and gas fields.
GFT-RTP III is generally available in sizes ranging from 2 to 8 inches and can be coiled. Customized large-size products can also be manufactured according to customer requirements.
| Nominal diameter (mm) | Nominal pressure (MPa) | Minimum wall thickness (mm) | Minimum working bending radius (mm) | Single length (m) | Reel size (mm) |
|---|---|---|---|---|---|
| 50 | 6.4 | 11.0 | 1750 | 600 | 2500*2000 |
| 50 | 12 | 12.5 | 1750 | 600 | 2500*2000 |
| 50 | 16 | 13.5 | 1750 | 600 | 2500*2000 |
| 50 | 20 | 13.5 | 1750 | 600 | 2500*2000 |
| 50 | 25 | 15.0 | 1750 | 600 | 2500*2000 |
| 50 | 32 | 18.5 | 1750 | 600 | 2500*2000 |
| 60 | 6.4 | 12.5 | 1900 | 500 | 2500*2000 |
| 60 | 12 | 14.5 | 1900 | 500 | 2500*2000 |
| 60 | 16 | 14.5 | 1900 | 500 | 2500*2000 |
| 60 | 20 | 16.0 | 1900 | 500 | 2500*2000 |
| 60 | 25 | 17.5 | 1900 | 500 | 2500*2000 |
| 60 | 32 | 18.5 | 1900 | 500 | 2500*2000 |
| 70 | 6.4 | 12.0 | 2300 | 650 | 3200*2800 |
| 70 | 12 | 14.5 | 2300 | 650 | 3200*2800 |
| 70 | 16 | 14.5 | 2300 | 650 | 3200*2800 |
| 70 | 20 | 15.5 | 2300 | 650 | 3200*2800 |
| 70 | 25 | 17.5 | 2300 | 650 | 3200*2800 |
| 70 | 32 | 17.5 | 2300 | 650 | 3200*2800 |
| 80 | 6.4 | 14.0 | 2600 | 600 | 3200*2800 |
| 80 | 12 | 16.5 | 2600 | 600 | 3200*2800 |
| 80 | 16 | 16.5 | 2600 | 600 | 3200*2800 |
| 80 | 20 | 18.0 | 2600 | 600 | 3200*2800 |
| 80 | 25 | 18.0 | 2600 | 600 | 3200*2800 |
| 90 | 6.4 | 14.5 | 2900 | 700 | 3750*2800 |
| 90 | 12 | 16.5 | 2900 | 700 | 3750*2800 |
| 90 | 16 | 16.5 | 2900 | 700 | 3750*2800 |
| 90 | 20 | 18.0 | 2900 | 700 | 3750*2800 |
| 90 | 25 | 18.0 | 2900 | 700 | 3750*2800 |
| 100 | 6.4 | 15.5 | 3200 | 600 | 3750*2800 |
| 100 | 12 | 18.0 | 3200 | 600 | 3750*2800 |
| 100 | 16 | 18.0 | 3200 | 600 | 3750*2800 |
| 100 | 20 | 22.0 | 3200 | 600 | 3750*2800 |
| 125 | 4 | 18.0 | 3700 | 400 | 3750*2800 |
| 125 | 6.4 | 19.5 | 3700 | 400 | 3750*2800 |
| 125 | 8 | 19.5 | 3700 | 400 | 3750*2800 |
| 125 | 12 | 21.5 | 3700 | 400 | 3750*2800 |
| 125 | 16 | 21.5 | 3700 | 400 | 3750*2800 |
| 125 | 20 | 24.0 | 3700 | 400 | 3750*2800 |
| 150 | 4 | 20.5 | 4200 | 400 | 3750*2800 |
| 150 | 6.4 | 20.5 | 4200 | 300 | 3750*2800 |
| 150 | 8 | 21.5 | 4200 | 300 | 3750*2800 |
| 150 | 12 | 22.5 | 4200 | 300 | 3750*2800 |
| 150 | 16 | 24.5 | 4200 | 300 | 3750*2800 |
| 175 | 4 | 21.5 | 4500 | 250 | 3750*2800 |
| 175 | 6.4 | 21.5 | 4500 | 250 | 3750*2800 |
| 175 | 8 | 23.0 | 4500 | 250 | 3750*2800 |
| 175 | 12 | 23.0 | 4500 | 250 | 3750*2800 |
| 175 | 16 | 25.5 | 4500 | 250 | 3750*2800 |
| 200 | 2.5 | 20.0 | 5000 | 170 | 3900*2800 |
| 200 | 4 | 22.5 | 5000 | 170 | 3900*2800 |
| 200 | 6.4 | 22.5 | 5000 | 170 | 3900*2800 |
| 200 | 8 | 24.0 | 5000 | 170 | 3900*2800 |
| 200 | 12 | 25.5 | 5000 | 170 | 3900*2800 |
| 200 | 16 | 27.0 | 5000 | 170 | 3900*2800 |
2.2.2 GFT-RTP II
The pipe wall structure is: PERT/GFT/PERT
Physical product illustration of PERT/GFT/PERT pipe
GFT-RTP II is resistant to medium temperatures and high pressures and features excellent corrosion resistance. It can transport various multiphase and single-phase flows, such as oil well produced fluids and wastewater separated at combined stations under medium temperatures, making it suitable for use as oil well gathering and transportation pipelines and downstream wastewater pipelines under medium temperatures.
GFT-RTP II is available in two size categories: Coilable (2–8 inches) and Non-coilable (8–40 inches).
| Outer diameter (mm) | 0.8 | 1.0 | 1.25 | 1.6 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 200 | 10.6 | 10.6 | 11.0 | 12.0 | 12.0 | 12.4 | 12.8 | 13.8 | 14.2 | 14.6 | 15.6 |
| 225 | 11.3 | 11.7 | 12.7 | 12.7 | 13.1 | 14.7 | 14.9 | 15.3 | 16.7 | 17.1 | 18.1 |
| 250 | 12.1 | 12.5 | 13.5 | 13.5 | 13.9 | 15.3 | 15.7 | 16.1 | 17.1 | 17.9 | 18.9 |
| 280 | 13.4 | 13.4 | 14.4 | 14.8 | 15.2 | 16.2 | 16.6 | 18.0 | 18.4 | 18.8 | 19.8 |
| 315 | 15.0 | 16.0 | 16.0 | 1.64 | 1.78 | 18.2 | 19.6 | 20.0 | 21.4 | 21.8 | 23.2 |
| 355 | 17.2 | 17.2 | 17.6 | 18.0 | 19.4 | 20.8 | 21.6 | 23.0 | 23.4 | 24.8 | 26.2 |
| 400 | 18.6 | 18.6 | 19.0 | 20.4 | 20.8 | 22.2 | 23.0 | 24.4 | 25.8 | 26.6 | 27.6 |
| 450 | 20.1 | 20.5 | 20.9 | 22.3 | 23.7 | 24.5 | 25.9 | 27. | 29.1 | 29.9 | 31.7 |
| 500 | 21.6 | 22.0 | 22.4 | 23.8 | 25.2 | 2.0 | 27.8 | 29.2 | 30.6 | 32.4 | - |
| 560 | 24.4 | 24.8 | 26.2 | 2.6 | 28.4 | 30.2 | 31.6 | 33.4 | 35.2 | - | - |
| 630 | 26.5 | 26.5 | 28.3 | 29.7 | 30.5 | 32.3 | 34.1 | - | - | - | - |
| 710 | 29.4 | 30.8 | 32.2 | 33.0 | 34.8 | 37.6 | - | - | - | - | - |
| 800 | 34.1 | 34.5 | 35.9 | 37.7 | 39.5 | - | - | - | - | - | - |
| 900 | 37.6 | 39.0 | 39.8 | 41.6 | 44.4 | - | - | - | - | - | - |
| 1000 | 40.6 | 42.0 | 42.8 | 45.6 | - | - | - | - | - | - | - |
2.2.3 GFT-RTP I
The pipe wall structure is: HDPE/GFT/HDPE or POE/HDPE/GFT/HDPE
GFT-RTP I features relatively high-pressure resistance and corrosion resistance. It can transport raw water, wastewater, etc. at normal temperatures. With a co-extruded POE wear-resistant layer as the inner liner, it can transport abrasive solid-liquid two-phase flows such as mineral slurry and sand-laden water at normal temperatures.
GFT-RTP I is mainly produced in large diameters (8–60 inches), and coilable products can also be manufactured according to customer requirements.
The thickness of the POE wear-resistant layer can be designed according to customer
requirements, generally 3–6 mm.
3D diagram of POE/HDPE/GFT/HDPE pipe
Physical product illustration of POE/HDPE/GFT/HDPE
| Outer diameter (mm) | 0.8 | 1.0 | 1.25 | 1.6 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 200 | 10.6 | 10.6 | 11.0 | 12.0 | 12.0 | 12.4 | 12.8 | 13.8 | 14.2 | 14.6 | 15.6 |
| 225 | 11.3 | 11.7 | 12.7 | 12.7 | 13.1 | 14.7 | 14.9 | 15.3 | 16.7 | 17.1 | 18.1 |
| 250 | 12.1 | 12.5 | 13.5 | 13.5 | 13.9 | 15.3 | 15.7 | 16.1 | 17.1 | 17.9 | 18.9 |
| 280 | 13.4 | 13.4 | 14.4 | 14.8 | 15.2 | 16.2 | 16.6 | 18.0 | 18.4 | 18.8 | 19.8 |
| 315 | 15.0 | 16.0 | 16.0 | 1.64 | 1.78 | 18.2 | 19.6 | 20.0 | 21.4 | 21.8 | 23.2 |
| 355 | 17.2 | 17.2 | 17.6 | 18.0 | 19.4 | 20.8 | 21.6 | 23.0 | 23.4 | 24.8 | 26.2 |
| 400 | 18.6 | 18.6 | 19.0 | 20.4 | 20.8 | 22.2 | 23.0 | 24.4 | 25.8 | 26.6 | 27.6 |
| 450 | 20.1 | 20.5 | 20.9 | 22.3 | 23.7 | 24.5 | 25.9 | 27. | 29.1 | 29.9 | 31.7 |
| 500 | 21.6 | 22.0 | 22.4 | 23.8 | 25.2 | 2.0 | 27.8 | 29.2 | 30.6 | 32.4 | - |
| 560 | 24.4 | 24.8 | 26.2 | 2.6 | 28.4 | 30.2 | 31.6 | 33.4 | 35.2 | - | - |
| 630 | 26.5 | 26.5 | 28.3 | 29.7 | 30.5 | 32.3 | 34.1 | - | - | - | - |
| 710 | 29.4 | 30.8 | 32.2 | 33.0 | 34.8 | 37.6 | - | - | - | - | - |
| 800 | 34.1 | 34.5 | 35.9 | 37.7 | 39.5 | - | - | - | - | - | - |
| 900 | 37.6 | 39.0 | 39.8 | 41.6 | 44.4 | - | - | - | - | - | - |
| 1000 | 40.6 | 42.0 | 42.8 | 45.6 | - | - | - | - | - | - | - |
| 1200 | 47.4 | 48.2 | 50.0 | 52.8 | - | - | - | - | - | - | - |
| 1400 | 53.8 | 55.6 | 57.4 | - | - | - | - | - | - | - | - |
| 1600 | 61.2 | 63.4 | 65.2 | - | - | - | - | - | - | - | - |
2.3 Connection
GFT-RTP connections are classified into three types:
2.3.1 Permanent connection between GFT-RTP pipes: non-metallic connection
Step1 milling the end
Step 3 welding the ends together
step 2 turning up
Step 4 reinforcing the joint
Non-metallic sleeve on-site connection
2.3.2 Detachable connection between GFT-RTP pipes: clamp connection.
2.3.3 Connection between GFT-RTP and pumps, valves, etc.: metal flange connection.
3. Quality Control
TLHT has perfect quality management system and complete testing equipment, and has passed API Q1 quality management system, ISO9001 system, mining safety standards and other system certification, as well as CNAS certification.
The company has a constant temperature and humidity indoor laboratory and independent pressure and burst test area, with more than 30 sets of testing and inspection instruments, which can meet the full range of RTP inspection requirements from raw materials to manufacturing processes to finished products, and achieve quality control throughout the production process of products, so as to provide users with highquality and reliable products.
| Quality policy | Quality objectives |
|---|---|
| Customer first, quality first | Complaint handling rate: 100% |
| High quality and efficiency | One-time acceptance pass rate of products: >96% |
| Continuous improvement | Customer satisfaction: >95% |
| Ex-factory pass rate of products: 100% |
4. Service System
Service Philosophy
Prioritizing customer needs and focusing on seven core elements of quality, delivery time, safety, durability, environmental protection, intelligence, and localized one-stop after-sales service. We constantly improve our capability to respond quality and service philosophy and continuously meet and exceed customer expectations.
Service Team
The company has set up local service teams in Chinese mainland, Middle East, and Kazakhstan. After-sales service engineers can arrive on site within 24 hours
5. Application Examples
5.1 Tatneft, Russia
A high-pressure glass fiber pipe project for Tatneft, Russia, involving 50 km each of DN80 and DN100, 17 MPa, used for transporting produced water at 60°C, and constructed in swamps during winter at -30°C.
5.2 Tatneft, Russia
A high-pressure glass fiber pipe project for Lukoil, Russia, involving DN100, 21 MPa, and 1,100 m, used for transporting produced water at 55°C, and laid in swamps.
5.3 Changqing Oilfield
A high-pressure glass fiber pipe project for Changqing Oilfield, involving DN65, 25 MPa, and more than 25 km, used for transporting produced water at 60°C, with longterm stable supply.
5.4 Qinghai Oilfield
The glass fiber pipe project for Qinghai Oilfield covers multiple specifications of high-pressure pipes, including DN50-4 MPa (16 km), DN40-25 MPa (8 km), and
DN40-32 MPa (13 km), used for oil and gas gathering and transportation as well as water injection at 70°C, and laid in the Gobi Desert.
5.5 Tuha Oilfield
The glass fiber pipe project for Tuha Oilfield covers multiple specifications of highpressure pipes, including DN100-12 MPa (12 km), DN40-16 MPa, and DN50-16 MPa (totaling over 200 km), used for crude oil/heavy oil transportation at 65°C (requiring hot washing at 90°C), and laid in the Gobi Desert.
5.6 Jianghan Oilfield
The glass fiber pipe project for Jianghan Oilfield covers multiple specifications of high-pressure pipes, including DN100-12 MPa (12 km), DN50/DN65/DN80-16 MPa, and DN50/DN65-25 MPa, used for oil and gas gathering and transportation, injection, and produced water/wastewater transportation below 65°C, and laid on plains.
5.8 Shengli Oilfield
The Gudong No.1 and No.2 Area renewal and renovation project of Shengli Oilfield involves DN200-6.4 MPa, 74.8 km glass fiber pipes, used for heavy oil transportation at 65°C, and laid on plains.
FAQ’s
GFT-RTP is similar to HDPE pipe, except flexible. In medium and low pressure applications, the connection method is also by butt welding, so its safety is similar to HDPE pipe. Due to the high strength of the reinforcement layer, GFT-RTP has better axial tensile capacity and better resistance to external force damage. It can still be used after being flattened. Therefore, GFT-RTP has better seismic resistance.
In addition to lower manufacturing cost, GFT-RTP is lighter in weight. The transportation and installation costs are lower than HDPE pipes and the inner diameter of GFT-RTP is larger than HDPE pipes, so the operating cost is also lower than HDPE pipes.
GFT-RTP as a water pipeline has a service life greater than HDPE pipes (50 years). As a pipeline for oil and gas, the service life is generally greater than 20 years, and as a pipeline for conveying slurry, it is generally greater than 15 years. The service life of GFT-RTP has been rigorously and completely researched and confirmed. The service life of the inner layer and the outer layer of HDPE is at least the same as the HDPE pipe’s, while the life of the reinforced layer, being under no effect from the medium, and under the premise of lower than the allowable stress, it will not fail.
Yes, the outer diameter and tolerance of GFT-RTP are consistent with current HDPE pipes, and the SDR of GFT-RTP is approximately 33.
Yes, it can be sealed with a sealing ring. In a long-term hydrostatic test, the sealing ring is sealed between the pipe end and the blind plate.
The creep properties of GFT-RTP are completely different from HDPE. Glass fiber cannot creep, so in terms of material, GFT will not creep.
No, GFT-RTP can neither tap nor punch holes.