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Special-shaped pipe fittings
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I. Product Definition and Structure
Name: Prefabricated Direct-Buried Polyurethane Insulation Elbow (usually 90°, customizable to 45°/180° and other angles)
Core Structure:
Inner Tube: Carbon steel material (such as Q235), capable of bearing heating / steam media;
Insulation Layer: Polyurethane rigid foam (thermal conductivity ≤ 0.03 W/(m·K)), filling the gap between the inner tube and the outer protective tube;
Outer Protective Tube: High-density polyethylene (HDPE), the black layer in the picture, serving as an anti-corrosion and waterproof function;
Interface Protection: The red part is a sealing and anti-corrosion layer, used to protect the insulation and sealing of the welded interface.
II. Core Characteristics
High-efficiency Insulation: The polyurethane insulation layer can control heat loss at an extremely low level, suitable for hot water / steam transmission scenarios of 80°C - 150°C;
Full Underground Adaptability: The design of the outer protective tube + sealing layer allows for direct burial underground, resisting soil corrosion and groundwater immersion, without the need for additional pipe trenches;
Structural Stability: Prefabricated integrated molding, the curvature radius of the elbow (usually 1.5 times the pipe diameter) optimizes fluid resistance and avoids pipeline stress concentration;
Long Service Life: The durability of the anti-corrosion and insulation layer is strong, with a service life of over 30 years in municipal heating scenarios.
III. Application Scenarios
Mainly used in urban centralized heating pipelines, regional heating projects, industrial steam transmission pipelines, etc. It is a key component for achieving direction changes in long-distance buried heating pipelines, especially suitable for northern environments with low temperatures and high groundwater levels.
IV. Key Standards
Must comply with industry standards such as "Urban Heating Prefabricated Direct-Buried Hot Water Insulation Pipe and Pipe Fittings" (CJ/T 114), and the selection should match the pipe diameter, medium temperature, working pressure, etc. parameters.
About Chongyuankai Pipeline
The company is a professional manufacturer of pressure pipeline equipment and accessories. It can produce high, medium and low pressure pipe fittings and flange products of different materials according to American standards, European standards and industry standards, with an annual production capacity of 400,000 tons. The products are used in petroleum, petrochemical, offshore oil, electricity, chemical, thermal power, shipbuilding, natural gas and other industries. The main markets are distributed in China, Asia (East Asia/Southeast Asia), Europe, Africa and the Middle East.
Advanced equipment, modern management, high-quality steel raw materials.
We create innovative solutions to the demands of our business partners with our expert R&D team and engineers.
We have many years of export experience and sold to more than 30 countries.
FAQ
Can I have my own custom product?
Yes. oem and odm can be provided, including design, logo, packaging, etc.
What is the minimum order quantity?
It depends on the product.
What are the terms of payment?
Wire transfer or letter of credit, Western Union, Alipay, etc.
When is the delivery time?
Inventory orders within 7-15 days, for oem and odm orders, the specific time depends on the actual situation.
Can I take samples for testing?
Yes, samples can be sent for testing before bulk ordering.
Do you have pre-shipment inspection procedures?
Yes, we always test the products before delivery.
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