Product Description
The flexible polyurethane pre-insulated pipe production line is an advanced equipment for producing polymer pressure inner pipes (PERT, PEX) and insulating the inner pipes with polyurethane foam.
The characteristic of this production line is that the pouring process of polyurethane foam is continuous.The inner pipe is continuously conveyed into the pouring area together with the polyurethane foam mixture, then coated and formed with a film, and then passed through a round die head to be coated with the outer protective layer extruded by the extruder.
Product Parameters
Compare between PE-RTII insulation pipe and Ordinary insulation pipe Picture | Weight/m | Cost of project | Pipe Length |

| Light | Low | unlimited |
 |
Weight |
High | Fixed-lenghth |
PE-RTII Heating Pipe Structure
- PERT Work pipe; 2- Protective pipe; 3-Insulated pipe; 4-Stander;
- d1- Protective pipe outer diameter; e1- Protective pipe wall thickness; e2- Insulation Layer thickness; dn-Work pipe Nominal diameter ;en- Nominal thickness of the work tube
Feature
PE-RTII insulation pipe√ PERT II Pipes Can Tolerate Temperatures of 110°C
√ Pipeline smooth, no impurities, no pollution
√ Heating companies can realize unattended, automated operation
√ Low temperature heating
√ 60 °C supply water 45 °C backwater to meet the heating demand.
√ The construction is simple and convenient, and the excavation amount is 40%
√ Greatly reduce construction costs
It saves the raw materials for using PE-RT II pipe.
Example: Level 2 design pressure: 10 Bar; for cold and hot water transfer in buildings
Selection of different material pipes: the highest PE-RTIIS value; the thinnest wall thickness
Compared to PERT I, PERT II can reduce material use by 15%
Relative to PP-R, PERT II can reduce material use by 30%
Note: According to relevant Chinese national standards and draft
| s | Dia.(mm) | Wall Thickness(mm) | Wall Thickness Area(m2) | Density(kg/m3) | Length(m) | Weight (kg) | Weight Save PERT/X |
PERT II | S3.2 | 16 | 2.2 | 9.5E-05 | 947 | 1000 | 90 |
|
PERT I | S2.5 | 16 | 2.7 | 1.1E-04 | 933 | 1000 | 105 | -17% |
PP-R | S2 | 16 | 3.3 | 1.3E-04 | 900 | 1000 | 118 | -31% |
|
PERT II | S3.2 | 20 | 2.8 | 1.5E-04 | 947 | 1000 | 143 |
|
PERT eI | S2.5 | 20 | 3.4 | 1.8E-04 | 933 | 1000 | 165 | -15% |
PP-R | S2 | 20 | 4.1 | 2.0E-04 | 900 | 1000 | 184 | -29% |
|
PERT II | S3.2 | 25 | 3.5 | 2.4E-04 | 947 | 1000 | 224 |
|
PERT I | S2.5 | 25 | 4.2 | 2.7E-04 | 933 | 1000 | 256 | -14% |
PP-R | S2 | 25 | 5.1 | 3.2E-04 | 900 | 1000 | 287 | -28% |
|
PERT II | S3.2 | 32 | 4.4 | 3.8E-04 | 947 | 1000 | 361 |
|
PERT I | S2.5 | 32 | 5.4 | 4.5E-04 | 933 | 1000 | 421 | -17% |
PP-R | S2 | 32 | 6.5 | 5.2E-04 | 900 | 1000 | 469 | -30% |
Detailed Photos


Production Applications
Huashida's continuous PERT flexible insulated pipe pipes are ideal for a wide range of applications, including district heating, cooling systems, oil and gas pipelines, and industrial piping. Their superior insulation, anti-corrosion properties, and long service life make them the preferred choice for modern, sustainable piping systems.

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