1. Excellent heat stability and impact resistance. 8760-hour testing under 110°C and 1.9 MPa environmental stress, according to international standards, revealed no leakage or damage to the pipe. PE-RT pipes avoid friction and impact during installation, offering high cost-effectiveness. 2. Lightweight, long service life, good flexibility, and easy bending. Compared with XPAP, PPR, and PEX plastic pipes, it features hot-melt welding, reducing the need for electrical pipe joints, good low-temperature resistance and flexibility. The bending radius can be as small as 5 times the outer diameter of the pipe, and cold brittleness will not occur during winter construction. Moreover, the pipe is sufficiently soft for easy installation. 3. Environmental friendliness and long service life. PE-RT pipes buried underground exhibit good stability, are non-corrosive, and resistant to damage, resulting in a long service life and reduced maintenance and replacement costs. PE-RT is recyclable and environmentally friendly.
Kongwang steel strip heat-resistant polyethylene prefabricated insulated pipe is a new type of heating pipe. It consists of a working pipe (including fittings), a rigid polyurethane foam insulation layer, and a polyethylene protective shell tightly combined. Because the three become one, buried directly in the soil, the thermal expansion stress caused by the temperature change of the inner pipe is transferred to the outer protective pipe through the polyurethane insulation layer, and the soil friction force on the outer protective pipe is also transferred to the working pipe through the polyurethane insulation layer, using the soil friction force to limit the thermal expansion of the pipe. This requires the polyurethane to have not only insulation function but also a certain compressive and shear strength.
Kongwang steel strip polyethylene composite pipe is made by high-speed punching on high-quality thin steel plates, and then argon arc welding to form a perforated thin-walled steel pipe as a reinforcing body. The plastic is extruded to the inside and outside of the perforated thin-walled steel pipe, and the plastic on the inner and outer walls is firmly bonded together through the pores to form a whole with the reinforced thin-walled steel pipe. The production process is as follows: steel strip unwinding → high-speed punching → perforated plate strip coiling → perforated plate strip unwinding → perforated plate strip butt welding → perforated plate strip storage → perforated plate strip precision edging → perforated plate strip compensation → perforated plate strip rough forming → perforated thin-walled steel pipe precision forming → perforated thin-walled steel pipe butt welding → eddy current flaw detection → perforated thin-walled steel pipe preheating → extrusion compounding → vacuum sizing → cooling → inkjet printing - traction → cutting → stacking → inspection → end cap → trimming → inspection → packaging and warehousing.
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Fuqing Yuanhong Investment Zone, Fujian Province
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