Introduction to Qingdao Hongcheng Hong’s Professional Vacuum Calibrating and Insulation Equipment

Introduction to Qingdao Hongcheng Hong’s Professional Vacuum Calibrating and Insulation Equipment

Qingdao Hongcheng Hong Anti-corrosion and Thermal Insulation Co., Ltd., as a leading enterprise in China’s anti-corrosion and thermal insulation equipment sector, has established a significant competitive edge in the field of vacuum-die thermal insulation equipment thanks to its robust technological capabilities and extensive industry experience. The vacuum-die thermal insulation equipment it produces is characterized by high efficiency, energy savings, advanced automation, and stable product quality. Widely used in industries such as petroleum, chemical engineering, centralized heating, and municipal engineering, these products have become benchmark offerings in the pipeline anti-corrosion and thermal insulation industry.

I. Technological Core: Localization and Innovation of German Engineering Techniques

The vacuum sizing and insulation equipment technology of Qingdao Hongcheng Hong originates from the in-depth assimilation and re-innovation of Germany’s advanced extrusion and traction technology. By introducing the core processes from Germany’s Aue Eer company and integrating them with the actual needs of domestic pipeline engineering, the company has successfully developed a vacuum sizing system that is well-suited for large-diameter pipes and meets high-precision requirements. Its key technologies include:

1. High-efficiency single-screw extruder: Featuring a forced-water-cooled feeding section and a screw design with a large length-to-diameter ratio (30-36:1), coupled with a barrier-type mixing unit, this extruder ensures uniform material plasticization and reduces energy consumption by more than 30%.

2. **Vacuum Sizing and Cooling System**: A sizing sleeve made of tin bronze or stainless steel, paired with a highly efficient spray cooling system, enables precise control of the pipe’s outer diameter tolerance within ±0.5 mm. Meanwhile, vacuum negative pressure is used to relieve internal stresses in the pipe, thereby eliminating the risk of pipe rupture—a common issue associated with traditional internal-pressure methods.

3. Intelligent traction-cutting system: Equipped with high-strength alloy steel blades and a planetary cutting mechanism, this system achieves a cut surface flatness error of less than 0.2 mm. The synchronization rate between the traction speed and the main machine reaches 99.8%, and daily production capacity is doubled compared to conventional equipment.

II. Product Matrix: Covering All Scenario Needs

For different pipe diameters and engineering scenarios, Qingdao Hongchenghong has launched a series of vacuum-drawn and insulated sizing equipment:

1. Model PE-110-550: Suitable for producing pipes with diameters ranging from Φ110 to Φ550 mm, with an installed capacity of 160 kW and a production line length of 34 meters. This model primarily targets the municipal heating and chemical pipeline markets. Its core advantage lies in its modular design, which allows for rapid switching between dies of different diameters, thereby meeting the demand for small-batch, multi-specification orders.

2. Model PE-850/13780: Designed for extra-large pipe diameters ranging from Φ850 to Φ13780 mm, this model features a high-efficiency extrusion capacity of 700–900 kg/h and a total power rating of 440 kW. It is widely used in long-distance oil and gas pipeline projects. This model employs a hydraulically driven traction system capable of stably handling pipe materials weighing up to 10 tons, thereby breaking through domestic technological bottlenecks in the production of ultra-large-diameter pipes.

3. One-step polyurethane insulation pipe production line: This line integrates vacuum sizing, polyurethane foaming, and black-and-yellow jacket wrapping processes, enabling the integrated molding of “steel pipe—insulation layer—outer protective casing.” Equipped with a PLC control system and ultrasonic monitoring device, it allows real-time adjustment of foam density and casing thickness, achieving a product qualification rate of over 99.5%.

III. Performance Advantages: Empirical Data on Cost Reduction and Efficiency Improvement

Qingdao Hongchenghong Equipment has demonstrated its cost-effectiveness in several nationally key projects:

1. Energy Consumption Comparison: Taking the production of Φ500mm pipes as an example, the vacuum sizing equipment consumes 45% less electricity per day compared to the internal-pressure method equipment, uses 60% less water, and reduces overall operating costs by 28%.

2. Quality Stability: The defect rate of traction pipe fittings is controlled within 0.5 meters per pipe, a reduction of 67% compared to conventional equipment. The pressure-bearing strength of the pipes has increased by 40%, and their service life has been extended to over 30 years.

3. Automation Level: The entire line requires only two operators. Through the human-machine interface, parameter settings, fault diagnosis, and production data tracing can all be completed, reducing labor costs by 75%.

4. Market Reputation: The Common Choice of Global Customers

Qingdao Hongchenghong Equipment has been exported to more than 30 countries, including Russia, Egypt, and Kazakhstan, and domestically serves key customers such as PetroChina, Sinopec, and the National Pipeline Network. Typical cases include:

1. The China-Russia East Pipeline Project: Using PE-960/1680 equipment to produce insulated pipes with diameters ranging from Φ960 to Φ1680 mm, the project has cumulatively supplied over 500 kilometers of such pipes, and has maintained a record of zero quality incidents to date.

2. Qingdao Jiaozhou Bay Submarine Tunnel Heating Project: A one-step production line enables continuous operation in low-temperature environments as low as -20℃. The pipe material’s impact resistance has been certified by DNV, filling a domestic gap in submarine pipeline insulation technology.

3. Construction of NEOM New City in Saudi Arabia: Customized PE-450/960 equipment is designed to withstand the high temperatures of desert environments. Thanks to a special coating treatment, the equipment’s service life has been extended to 15 years, earning it the “Best Supplier” award from the Saudi Ministry of Energy.

V. Service Support: A Full Lifecycle Support System

Qingdao Hongcheng Hong has established a closed-loop service system encompassing “R&D, production, and after-sales.”

1. 24/7 Response Mechanism: Global customers can submit their requests through a dedicated service platform, and the technical team will arrive on-site within 2 hours (within China) and provide spare parts within 48 hours.

2. Digital Operations and Maintenance Platform: Devices are equipped with IoT modules that can upload operational data to the cloud in real time. Using AI algorithms, the platform predicts potential failure risks and sends maintenance recommendations 30 days in advance.

3. Technical Training System: Each year, we provide free operational training to partner companies, covering equipment principles, process optimization, and emergency response procedures. To date, we have trained over 5,000 professional personnel.

Qingdao Hongcheng Hong Anti-Corrosion and Thermal Insulation Co., Ltd. is driven by technological innovation and guided by customer needs, continuously upgrading its vacuum-drawn pipe insulation equipment toward智能化 (intelligent) and green practices. Its products not only represent the high-end standard of Chinese manufacturing but also provide a reliable guarantee for the safe operation of global energy infrastructure.