Steel jacket pre-insulated pipe is a type of pipeline system designed for efficient thermal insulation and protection, particularly for underground or underwater applications. It typically consists of a steel carrier pipe, a layer of polyurethane foam insulation, and an outer jacket, often made of high-density polyethylene (HDPE) or galvanized steel. This construction minimizes heat loss, provides corrosion resistance, and enhances the overall durability and longevity of the pipeline.
Product Composition
1. Insulation layer
Inner sliding type: It uses high temperature resistant materials such as aluminum silicate and microporous calcium silicate, combined with polyurethane foam and aluminum foil reflective layer to reduce heat loss.
External sliding type: It is mainly glass wool or aluminum silicate fiber, supplemented by air insulation layer and stainless steel fastening belt to adapt to high temperature expansion.
2. External protection steel pipe
High-strength anti-corrosion steel pipe, which protects the insulation layer and bears external loads. It is usually welded to ensure waterproof sealing.
3. Additional layers
Such as moisture-proof layer (polyethylene film), reflective layer (aluminum foil) and anti-corrosion layer (such as three-layer PE cold wrap) to further improve durability.
Advantages
1. High temperature resistance: It can withstand high temperatures of 150°C–450°C, and is especially suitable for high-temperature steam pipeline projects.
2. Direct burial construction: No concrete structure is required, and the thermal expansion of the working steel pipe is completed in the outer protective pipe, reducing construction costs and shortening construction periods.
3. Economical and efficient: Reduce heat loss (multi-layer insulation design) and reduce energy waste.
Long service life (corrosion-resistant design of outer protective steel pipe) and low maintenance cost.
4. Safe and reliable: Fully enclosed drainage system and bellows compensator design to avoid leakage and thermal stress damage.
High-strength outer protective pipe is resistant to pressure and groundwater erosion, suitable for high water level areas.
Application Fields
Central heating/cooling: urban heating network, central air conditioning pipelines.
Industrial transportation: chemical media, hot oil (such as the oil industry).
Municipal engineering: underground direct buried pipelines to reduce ground occupation and environmental impact.
Classification
Internal sliding type: The insulation layer is fixed to the working steel pipe, which is suitable for medium and low temperature scenes.
External sliding type: A sliding bracket is set between the insulation layer and the outer protective pipe to adapt to the thermal displacement of the high-temperature steam pipeline.
Steel Jacket Pre-Insulated Pipe achieves efficient insulation, low-cost construction and long-term safe operation through multi-layer composite structure and direct burial technology, and is the preferred solution in the field of high-temperature fluid transportation.
Our Factory
Hebei Yugang Pipeline Manufacturing Co., Ltd. is deeply rooted in the fertile soil of the pipeline industry in Yanshan, Cangzhou. Since its establishment in 2005, it has completed the transformation from traditional manufacturing to a technology-based group. After the reorganization of the company in 2014, it formed a trinity of pipeline research and development, equipment manufacturing, and accessories production. In 2024, its technical strength was rated as a high-tech enterprise. At present, it has five major product systems including spiral pipes, anti-corrosion pipes, and insulation pipes. 16 intelligent production lines guarantee an annual supply capacity of 300,000 tons. The quality management system has passed ISO9001 certification, and the products also meet APISpec5L/5CT/5B international standards and a number of industry specifications.
Frequently Asked Questions (FAQ)
Q: What is the minimum order quantity?
A: It varies depending on product specifications, materials and degree of customization. Please provide specific requirements for standards and we will confirm the most economical solution for you.
Q: How to get a product quote?
A: The price of steel pipes is affected by raw material fluctuations, specifications, processes, quantities and market factors. Please contact sales by email or phone and provide information to obtain an accurate quote.
Q: How long is the production cycle and delivery time?
A: The delivery time depends on the order volume, specification complexity and current production schedule. Standard products are usually faster, and large orders or complex customizations take longer. We will confirm the exact delivery schedule with you before placing an order.
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