Brand advantage

Industry case

Reach Xingao

Company Profile

Jiangsu Xingao bellows Co., Ltd. was founded in 1989, with a construction area of more than 13,000 square meters. It is a modern enterprise integrating the design, production and sales of metal hose, corrugated metal expansion joint, piping compensatory couplings, rubber expansion joint and etc.       Xingao's main products include: various types of corrugated metal hoses from DN6 to 1000mm, LNG low-temperature hoses, various types of metal bellows expansion joints from DN25 to 6000mm, rubber expansion joints.       The metal hose is produced in accordance with the GB/T14525-2010 standard, which has the characteristics of light weight, corrosion resistance, fatigue resistance, high pressure resistance, good flexibility and less land occupation. The corrugated expansion joint is designed according to EJMA and ASME standards, and produced and inspected according to GB/T12777-2019 standard. The products are widely used in nuclear power, petroleum, gas, low temperature, chemical industry, wind power, thermal power, photovoltaic, smelting, construction, heating pipelines, machinery manufacturing, aerospace and other fields. Our products are also exported to Russia, Brunei, Kazakhstan, Pakistan and other countries.        Xingao has passed ISO9001 quality management system, ISO14001 environmental management system, ISO45001 occupational Health and safety management system, TS2732H18-2026 special equipment production license and other related certifications, and have a perfect quality assurance system to ensure the traceability of product quality. Xingao has 20 sets of various bellows forming equipments, 12 bellows production lines, and more than 150 sets of various mechanical processing equipments, including automatic longitudinal welding machine, large tonnage four-column hydraulic press, automatic bellow forming machine, special automatic circular seam welding machine, environmental protection type sandblasting spray painting drying system and other advanced special production equipment, with a complete set of ultrasonic pure water cleaning production line, which can effectively ensure the cleanliness of products. We also have eddy current testing, mechanical properties testing, chemical analysis, X-ray testing, pressure test, air tightness test, fatigue test, helium mass spectrometry leak detection and other advanced special testing facilities.Xingao has more than 120 employees, including 15 engineering and technical personnel, strong technical force. All relevant positions of Xingao have obtained the corresponding qualification certificate, and there are full-time product quality testing institutions and testing personnel.Xingao will continue to adhere to the "people-oriented" management philosophy, pay attention to the use of modern management concepts,  "perfect quality, dedicated service" as the guiding ideology,  "pioneering, innovative, pragmatic, high efficiency" for the purpose of development, and strive to provide customers with products and services, towards the update, higher goals!



Cause of damage of corrugated expansion joint guide cylinder
The role played by the guide cylinder in the corrugated expansion joint is not to be underestimated, the flow medium of the corrugated expansion joint installed with the guide cylinder should be stable, which reduces the structural vibration caused by the change of fluid flow characteristics when the high-speed fluid passes through the corrugated pipe, and plays the role of protecting the corrugated pipe. When used in the working environment with strong scouring force, it can also play the role of anti-scouring and wear-resistant, so that the bellows are protected from direct scouring by the medium, and the bellows are protected to extend the service life of the corrugated expansion joint. After the expansion joint has been running for a period of time, the guide cylinder has non-standard cracks and falls after serious fragmentation. Analyze the causes of damage, and avoid problems in the later selection and use process. The technical personnel of the expansion joint manufacturer summarized the following points according to the actual application: 1. After the modal and stress analysis of the guide cylinder through the finite element method, it was concluded that the application pipeline was damaged due to the fatigue damage of the guide cylinder caused by the vibration of the internal airflow. 2. The natural vibration frequency of the guide cylinder resonates with the vibration frequency of the pipe system, and the vibration frequency is similar. 3. During operation, the flow rate of the circulating medium suddenly changes and the internal pressure of the pipeline system suddenly increases. 4, the use of conditions change, so that the vibration of the pipe system or the internal medium changes. The phenomenon of resonance between the tube and the pipe system leads to fatigue, which causes the tube to crack and fracture.
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East Factory:D5-8, Jinbotong Science Park, No.8 Jintong Road, Baimi Town, Jiangyan District, Taizhou City, Jiangsu Province

West Factory: No.117 Hangzhou Road, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province