L245 straight seam steel pipe cutting cross-section without burrs and weld heat treatment

L245 straight seam steel pipe is an important pipe widely used in energy transmission, construction engineering, and other fields. Its cutting quality and weld heat treatment process are directly related to the performance and service life of the product.

In the cutting process, advanced cutting technology and equipment are the keys to ensuring that the cross section of L245 straight seam steel pipe is burr-free. Nowadays, equipment such as fully automatic horizontal push pipe cutting machines can realize batch cutting of steel pipes with a high-precision servo feeding system, and the cross-section after cutting is smooth and burr-free. This burr-free cutting effect not only improves the beauty of the steel pipe but more importantly, avoids the stress concentration problem caused by burrs, and reduces the risk of defects such as cracks in the steel pipe during use, thereby improving the overall quality and reliability of the steel pipe.

Weld heat treatment is an important process in the production process of L245 straight seam steel pipe. Medium-frequency induction heating normalizing treatment immediately after welding is a common and effective method. Generally, the temperature is controlled at 900±20℃, and the insulation time is determined according to the wall thickness of the steel pipe. This heat treatment process can effectively improve the microstructure and properties of the weld and heat-affected zone. Through heat treatment, welding residual stress can be reduced. As the heat treatment temperature increases, the residual stress elimination effect is better. At the same time, it can also improve the stress corrosion resistance of the steel pipe, which is crucial for the long-term stable operation of the L245 straight seam steel pipe in a complex environment. For example, in the construction of oil and gas pipelines, steel pipes need to withstand internal water pressure and bending moments formed by their own weight and water bodies. Good weld heat treatment can ensure that the steel pipe still maintains stable performance under these complex stress conditions.

In addition, after completing the weld heat treatment, a series of quality inspection processes are required, such as water pressure testing and non-destructive testing, to ensure that the quality of the steel pipe meets the standard requirements. Through precise cutting technology and scientific weld heat treatment, the L245 straight-seam steel pipe provides high-quality and high-performance pipe guarantees for various projects, which has effectively promoted the development of related industries.