Xingbang's outdoor insulated pipe is a prefabricated insulation product designed for high-temperature steam applications in outdoor environments. It features a "steel-in-steel" composite insulation structure capable of withstanding temperatures up to 350°C. The metal outer casing offers excellent UV and weather resistance, making it ideal for overhead steam piping networks in industrial pipe racks and facility complexes. Factory-prefabricated for easy installation and designed for overhead routing-which facilitates inspection and maintenance-this product is a reliable choice for insulating outdoor high-temperature steam pipelines.
Product Specifications
|
Carrier pipe diameter (DN) |
Insulation layer thickness |
Outer casing outside diameter (Dc) |
Minimum wall thickness of outer casing (emin) |
|
300 |
30-50 |
393-433 |
4.0 |
|
350 |
30-50 |
445-485 |
4.0 |
|
400 |
30-60 |
494-554 |
4.0 |
|
450 |
30-60 |
547-607 |
4.5 |
|
500 |
30-60 |
598-658 |
4.5 |
|
600 |
30-60 |
700-760 |
5.0 |
|
700 |
30-60 |
790-850 |
5.0 |
|
800 |
30-60 |
891-951 |
5.5 |
|
900 |
30-60 |
992-1052 |
6.0 |
|
1000 |
30-60 |
1093-1153 |
6.5 |
|
1100 |
30-60 |
1194-1254 |
7.0 |
|
1200 |
40-100 |
1316-1436 |
8.0 |
|
1400 |
50-120 |
1538-1678 |
9.0 |
|
1600 |
60-150 |
1760-1944 |
11.0 |
Product Structure
External Sliding Type: Composed of
① carrier pipe② anti-corrosion coating
③ insulation material④ stainless steel fastening bands
⑤ reflective layer⑥ air gap⑦ sliding/guiding support
⑧ outer protective steel pipe⑨ external anti-corrosion coating
Internal Sliding Type: The insulation structure consists of
① carrier pipe② anti-corrosion coating③ friction-reducing layer
④ thermal insulation layer⑤ stainless steel fastening bands
⑥ reflective layer⑦ polyurethane insulation layer
⑧ outer protective steel pipe⑨ external anti-corrosion coating
Product Advantages
Excellent High-Temperature Resistance
Suitable for medium temperatures ranging from 150°C to 350°C and operating pressures up to 2.5 MPa, meeting the demands of industrial and municipal high-temperature steam transport.
01
Metal Outer Protective Pipe with Strong Weather Resistance
The outer pipe is made of metal materials such as galvanized sheet, color-coated steel, or stainless steel; it offers excellent resistance to UV degradation and can withstand long-term outdoor exposure without corroding.
02
Superior Insulation and Significant Energy Savings
A multi-layer composite gradient insulation structure combined with an aluminum foil reflective layer reduces heat loss by over 40% compared to traditional piping, keeping the temperature drop within 3°C per kilometer.
03
Effective Solution to Thermal Bridging
Utilizes internal or external sliding structures combined with low-thermal-conductivity sliding supports to effectively block heat loss through conduction at the support points.
04
Long Service Life
Designed for a service life of 25–30 years; the metal outer pipe resists erosion from wind and rain, ensuring long-term, reliable operation.
05
Applications
These outdoor insulated pipes are widely used for overhead steam networks in factory pipe racks, steam transport lines for petrochemical enterprises, and centralized steam supply pipelines in industrial parks, as well as in special terrain scenarios-such as river crossings or hillside installations-where direct burial is unsuitable. The products are designed for transporting steam at temperatures between 150°C and 350°C and operating pressures up to 2.5 MPa; the overhead installation method facilitates routine inspection and maintenance.
Customization Services
Temperature and Pressure Rating Customization
Standard products are suitable for temperatures of 150°C–350°C and operating pressures ≤ 2.5 MPa. For special operating conditions involving medium temperatures exceeding 350°C, specialized designs and custom manufacturing are available to meet high-temperature transport requirements.
Customization of Specifications and Dimensions
Pipe diameters range from DN25 to DN1800, suitable for applications from standard heating branch lines to large-scale main distribution networks. Customizable parameters-such as the wall thickness of the carrier pipe, insulation layer thickness, and outer casing specifications-are optimized based on medium temperature, pipe diameter, and project cost-efficiency.
Customization of Insulation Structure and Materials
Various insulation structure solutions are provided based on the installation method (above-ground or direct-buried) and temperature rating:
Composite insulation layers: Materials such as aluminum silicate felt, microporous calcium silicate, ultrafine glass wool, nano-aerogel, and polyurethane foam can be combined to create a graded insulation structure.
Structural configurations: Above-ground solutions offer options for "inner-sliding" or "outer-sliding" structures to accommodate different thermal expansion compensation requirements.
Customization of Outer Casing Materials
Depending on the installation environment and anti-corrosion requirements, various metal outer casing materials-such as spiral-seam color steel, aluminum alloy, galvanized steel, or stainless steel-can be selected to meet specific needs regarding UV resistance and weatherability.
Customization of Fixed Supports and Pipe Fittings
Customized components-including thermally insulated fixed supports, sliding supports, condensate drainage units, elbows, and tees-are manufactured to match specific engineering design points, ensuring the compatibility of the entire pipeline system.
Customization of Smart Monitoring Functions
Integrated leak detection and alarm systems can be incorporated upon request, enabling remote monitoring and real-time early warnings to ensure the long-term safe operation of the pipeline network.
Customization Process
|
Step |
Description |
|
① Operating Condition Submission |
The client provides parameters such as medium temperature, operating pressure, pipe diameter specifications, installation method (overhead/direct burial), and soil corrosivity level. |
|
② Solution Design |
Xingbang's technical team develops insulation structure and anti-corrosion plans and technical drawings based on the operating conditions, performing structural calculations and insulation thickness optimization. |
|
③ Parameter Confirmation |
Both parties confirm customization parameters (pipe diameter, wall thickness, insulation layer thickness, outer casing material, anti-corrosion grade, etc.) and sign a technical agreement. |
|
④ Customized Production |
Production is scheduled according to the confirmed plan; quality control points are established for key processes, production data is fully recorded, and a "three-inspection system" is implemented. |
|
⑤ Factory Inspection |
Comprehensive performance testing is conducted at a CNAS-accredited testing center (spanning over 2,000 square meters), covering core indicators such as insulation layer density, thermal conductivity, and closed-cell content. |
|
⑥ Logistics & Delivery |
Delivery to the site via a dedicated transport fleet, accompanied by joint insulation/field-joint sealing services and technical guidance. |
Rigorous Quality Control
Raw Material Inspection
All incoming raw materials undergo strict testing, covering key metrics such as steel pipe material composition, thermal conductivity of insulation materials, and coating thickness of metal outer protective pipes.
Process Monitoring
Comprehensive in-process inspections are implemented; high-precision infrared thermal imaging is used to monitor the insulation layer application, ensuring uniformity and the absence of voids.
Factory-Exit Inspection
Insulated pipes must pass multiple tests, including checks for insulation density, thermal conductivity, closed-cell content, and the surface quality of the outer protective pipe.
High-Standard Certification
The company's testing center spans over 2,000 square meters; it holds CNAS accreditation and nine major management system certifications, and has been honored with the Hebei Provincial Government Quality Award.
About Us
Established in 1995, Tangshan Xingbang Pipeline is a national "Single Champion" manufacturer and a key "Specialized, Refined, Unique, and Innovative" (SRUI) "Little Giant" enterprise. With an annual production capacity exceeding 3,000 kilometers of insulated piping, its products serve over 200 cities across four continents. The company holds over 140 patents, has participated in drafting more than 70 national and industry standards, and possesses nine major management system certifications. It is a leading enterprise in the anti-corrosion and thermal insulation pipeline industry, integrating R&D, production, sales, and service.
FAQ
Q: What is the service life of outdoor insulated pipes?
A: Under normal operating conditions, they can be used continuously for over 30 years. Xingbang products have passed 30-year aging tests, with a Continuous Operating Temperature (CCOT) rating of 143.7°C-exceeding the maximum design temperature specified in national standards.
Q: How are thermal bridges in overhead pipelines addressed?
A: Xingbang optimizes support structure designs using patented technology to prevent direct contact between the support and the carrier pipe. Combined with the polyurethane insulation structure, this effectively blocks heat loss through conduction via the supports and reduces overall heat dissipation.
Q: How are field joints handled?
A: A 150–250mm section is left exposed at both ends of the pipe to facilitate on-site butt welding. Field joints are insulated using the same material as the pipe body and sealed with an outer protective sleeve, ensuring consistent insulation performance across the entire pipeline.
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