Introduction of the company Hebei Huidong Pipeline Co., Ltd. is a professional enterprise which produces insulation pipes, pipe fittings, polyethylene pipes and pipe installation construction. The company is located in Cangzhou City, Hebei Province, was founded in September, 1984. With the rapid development, the independent legal person was registered in June, 2008, with the capital of 60 million RMB. The company has the area of 139000 square meters and 216 staffs, among which, 39 engineering and technical personnel, including 3 senior engineers. The company has 8 insulation pipe production lines. Each year 1800 kilometers of DN50-DN1680 insulation pipes are produced. There are 137 sets of production and testing equipment, annual production pipe fittings of 360 thousand pieces ande 6 advanced polyethylene pipe production lines. We use the most advanced international technology such as spiral mold extrusion, vacuum sizing, spray cooling and automatic cutting, etc. 40 thousand tons of Φ90-1800 polyethylene outside pipes are produced every year. Specifications of the product Polyurethane insulation layer
Item | Performance | Reference standard |
Core density | ≥60 kg/m³ | CJ/T114-2000 EN253 |
Radial compression intensity | ≥0.3 Mpa | CJ/T114-2000 EN253 |
High-temperature water absorbing rate | ≤10% | CJ/T114-2000 EN253 |
Hole blind rate | ≥88% | CJ/T114-2000 EN253 |
Thermal conductivity | ≤0.033 W/m.k | CJ/T114-2000 EN253 |
Main properties of finished pipe
Item | Performance | Reference standard |
Increase of external diameter | ≤2% | CJ/T114-2000 EN253 |
Impact resistance performance | No obvious crack of the outer sleeve | CJ/T114-2000 EN253 |
Axial shear strength | 0.12 Mpa (23±2℃) 0.08 Mpa (23±2℃) | CJ/T114-2000 EN253 |
PE outer protecting tube
Item | Performance | Reference standard |
Density | ≥940 kg/m³ | CJ/T114-2000 EN253 |
Carbon black content | 2.5%±0.5% | CJ/T114-2000 EN253 |
Tensile yield strength | 19 Mpa | CJ/T114-2000 EN253 |
Break elongation | ≥350% | CJ/T114-2000 EN253 |
Longitudinal shrinkage rate | ≤3% | CJ/T114-2000 EN253 |
Long-term mechanical property | ≥1500 h | CJ/T114-2000 EN253 |
Structure of the product
Our patant technology
Photos of the production equipments
Certifications