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Direct-buried Insulated Pipes For District Heating
Prefabricated direct-buried insulated pipes conforming to EN 253 standards are composed of a working steel pipe (seamless or spiral welded pipe), a rigid polyurethane foam insulation layer, and a high-density polyethylene outer protective pipe, all foamed in a single process. Specifically designed for centralized heating, cooling, and domestic hot water supply, they offer excellent insulation performance and can be directly buried without the need for separate pipe trenches.
High-temperature Steam Insulation Pipes
This high-temperature steam insulation pipe features a "pipe-in-pipe" structure. The inner pipe is a seamless steel pipe (20# steel or API 5L Gr.B), filled with high-temperature resistant inorganic insulation materials such as rock wool, glass wool, or aerogel. The outer protective pipe is a welded steel pipe covered with a three-layer polyethylene (3PE) anti-corrosion layer. Internal or external sliding guide support systems are available, specifically designed for long-distance transportation of high-temperature, high-pressure steam.
Flexible Pre-insulated Pipe (PEX Inner Pipe)
Flexible pre-insulated pipe with cross-linked polyethylene (PEX-a), heat-resistant polyethylene (PE-RT), or polybutene (PB) as the inner tube, wrapped with a polyurethane insulation layer and a high-density polyethylene sheath. The product can be supplied in rolls (maximum 500 meters/roll), with a minimum bending radius of only 5 to 10 times the outer diameter, eliminating the need for special elbows and significantly reducing the number of on-site joints.
Pre-insulated Pipes For Industrial Use
This product category integrates mineral wool (rock wool/glass wool) insulation pipes and various customized outer protective layers (galvanized steel plate, aluminum plate, fiberglass, color steel plate) solutions. It is suitable for industrial scenarios with special requirements for fire resistance (A1 non-combustible), ultra-high temperature resistance (≤450℃), or strong corrosion resistance (fiberglass outer protective layer). The outer protective layer material and thickness can be freely combined; OEM customization is accepted.
Anti-static Fire-resistant Pipes For Mining
This dual-resistance （antistatic and flame-retardant） insulation pipe is specifically designed for underground coal mine environments. Its structure consists of: a seamless steel pipe （with an inner wall that can be coated with polyurea or epoxy resin）+ a flame-retardant polyurethane insulation layer + an antistatic and flame-retardant polyethylene outer protective pipe. The product must hold a valid mining product safety certificate （MA mark） and meet mandatory standards such as MT/T 181 （surface resistivity ≤1×10⁸ Ω）and MT/T 113 （afterflame of alcohol torch ≤3 seconds）
