Rectangular fillet expansion joint

Rectangle fillet expansion joint characteristics

1. The product's edges and corners form a rectangular section by large arc transition, the stress level of the corners and corners is reduced, the deformation dead angle is eliminated and the product is uniformly deformed when it is running on-line, thus reducing the risk of regional high stress failure and prolonging the service life of the product.

2. This product reduces the thrust of pipeline system under the condition of overall stability and maintaining the basic working stiffness, improves the thermal compensation ability of the product, and reduces the investment cost of flexible parts in pipeline construction.

3. Because of the adaptability of geometric shape, the product can work reliably in a benign force system under the action of tensile stress, compressive stress and alternating stress, avoiding the local stress risk zone, and effectively improving the stress corrosion cracking (SEE) and corrosion fatigue fracture (CFF) when working in flue gas containing H2SO, CO and H2. The deteriorating trend will increase the number of thermal cycles allowed without affecting the service life.

4. The welding seam of this product can be far away from the arc tangent point when the length of the rectangular side is less than 2M, the welding seam can be reduced by one, the amount of welding seam misalignment is greatly reduced, the error between the section shape of the bellows at any position of the product and the length of the bellows is very small, the bellows are formed, and the full surface of the STRETCH-BEND forming is smooth. It accords with the theoretical criterion of bellows fatigue life.

5. The arc steel plate at the corner is welded and strengthened. The joint is made of channel steel, which enhances the structural stiffness of the product. The overall product line is smooth and the appearance is bright.