Original material steel belt bellows purchase skills to avoid pipe procurement mistakes

Original steel bellows are widely used in municipal drainage, sewage and other engineering fields due to their high strength and corrosion resistance. However, if you do not master the skills during the purchase process, it is easy to step into the procurement misunderstanding.

When purchasing, the first thing to pay attention to is the quality of raw materials: the pipe made of raw materials is uniform in color, the surface is delicate without variegated spots or particles, and there is no pungent odor when it is close to the smell; if there are black spots and obvious roughness on the surface of the pipe, there is a high probability of doping recycled materials, and it is easy to age and crack after long-term use. Secondly, check the steel strip layer: the thickness of the steel strip of high-quality pipes is uniform, the surface is free of rust and bulge, and the winding is tight and firmly bonded to the plastic layer. It can be judged by tapping the pipe wall. The sound is uniform and there is no sense of voids. The quality of the steel strip layer directly affects the stiffness of the pipe ring, which is the core indicator of the bearing capacity. In addition, pay attention to the connection structure: the sealing design at the interface needs to If possible, you can ask to check the compliance test report such as ring stiffness and impact resistance of the pipe to ensure compliance with national standards.

Common procurement misunderstandings need to be vigilant: First, blindly pursue low prices, some businesses use recycled materials instead of raw materials to reduce costs, which seems to save money, but in fact the service life of pipes is short, and the later maintenance costs are higher; second, ignore the scene adaptation, different buried depths, conveying media correspond to different ring stiffness pipes, blindly choose too high or too low specifications, which will affect the use effect; third, ignore the test report, fail to verify the authenticity and compliance of the report, easy to buy substandard products, buried engineering hidden dangers.

When purchasing raw steel bellows, it is necessary to comprehensively consider factors such as raw materials, steel belt layers, and adaptability, and avoid misunderstandings such as low-cost traps in order to choose high-quality pipes that meet the needs and ensure the quality of the project and long-term stable use.