Flange Rubber Expansion Joints for the Tangshan Yanshan Steel Project

Shanghai Songjiang Group proudly supplies flange rubber expansion joints for the Tangshan Yanshan Steel Project. As a leading manufacturer, we have provided rubber expansion joints to major steel companies across the country, ensuring the reduction of vibration and noise in their operations. Below is a detailed introduction to the project and the application of our products.

Introduction to Tangshan Yanshan Steel

Hebei Iron and Steel Group Yanshan Iron and Steel Co., Ltd. (formerly Qian’an Lian Steel Yanshan Iron and Steel Co., Ltd. and Tangshan Great Wall Steel Group Yanshan Iron and Steel Co., Ltd.) is managed by General Manager Cui Qingyuan and Zhang Weichen, with a registered capital of 2 billion RMB and assets totaling 8 billion RMB. On May 1, 2011, it joined the Hebei Iron and Steel Group and was renamed Hebei Iron and Steel Group Yanshan Iron and Steel Co., Ltd.

The company’s business scope includes iron and steel smelting, metallized pellet production, steel rolling, automobile transportation (general goods), iron ore concentrate sales, export of the company’s products, and import of machinery, spare parts, raw and auxiliary materials required by the company.

The company is located on the west side of Qian’an Railway Station, south bank of the Luan River, covering an area of 8500 mu. The Jingqin Railway passes in front of the company, with a dedicated railway line connected to it. It is 5 kilometers from the Beijing-Shenyang Expressway to the south and 10 kilometers from Qian’an city to the north, making it a location with excellent geographical advantages, abundant water resources, and convenient transportation.

Details of the Flange Rubber Expansion Joints for the Tangshan Yanshan Steel Project

The contract for this project primarily involves flange rubber expansion joints with DN500 and DN700 diameters, model KXT, and pressure rating PN10. These joints are manufactured using natural rubber and are designed to transport room temperature water.

The flange rubber expansion joints are composed of inner and outer rubber layers, fabric layers, and steel wire rings. After vulcanization, they are assembled with metal flanges or parallel joints. These products effectively reduce vibration and noise and compensate for thermal expansion and contraction caused by temperature changes, making them widely applicable in various pipeline systems.

Detailed Installation Instructions

Proper installation of flange rubber expansion joints is crucial to ensure their performance and longevity. Here are the detailed steps and precautions:

1. Avoid Overstretching: Ensure that the expansion joint is not overstretched beyond its displacement limits during installation.
2. Positioning: For installations on flat surfaces, suspended, or vertical positions, the actual axial displacement pressure of the rubber joint should be less than the supporting force of the pipeline. If not, install anti-pull-off devices to prevent dislocation under pressure.
3. Fixed Supports: The pipeline must have fixed supports or brackets. The force of the fixed brackets must be greater than the axial force of the expansion joints.
4. Vertical and Overhead Installations: When installing vertically or overhead, both ends of the product need corresponding fixed and stress-bearing supports to prevent pull-off under pressure.
5. Symmetrical Tightening of Bolts: Install bolts symmetrically and gradually tighten them to avoid localized leakage.
6. Heat Source Precautions: Keep the expansion joints away from heat sources and ensure that the medium used complies with the product specifications.
7. Periodic Inspection: Regularly inspect the expansion joints for any signs of wear or damage and ensure that the installation remains secure.

Application of Shanghai Flange Rubber Expansion Joints in the Tangshan Yanshan Steel Project

In the Tangshan Yanshan Steel Project, the flange rubber expansion joints provided by Shanghai Songjiang Group have been instrumental in ensuring the smooth operation of the steelmaking and desulfurization processes. The joints effectively reduce the vibration and noise generated by the machinery and pipelines, contributing to a more stable and efficient production environment.

The DN500 and DN700 flange rubber expansion joints installed in the project are specifically designed to handle the demands of steelmaking operations. Their ability to compensate for thermal expansion and contraction has been particularly beneficial, preventing pipeline deformation and potential damage due to temperature fluctuations.

In summary, the use of Shanghai Songjiang Group’s flange rubber expansion joints in the Tangshan Yanshan Steel Project has demonstrated their essential role in industrial applications. These joints have not only met but exceeded the expectations, ensuring reduced maintenance costs and improved performance of the pipeline systems. This case stands as a testament to Shanghai Songjiang Group’s expertise and dedication to delivering high-quality solutions for the steel industry.