SG295 is the grade of steel plates and strips for welded gas cylinders (implementing the JIS standard). It is of crucial significance in industrial production, especially in the manufacturing of welded cylinders. It belongs to categories such as low - alloy steel (and there are also names like carburized steel and alloy structural steel for different attribute descriptions). It is a type of hot - rolled steel.
Its characteristics are prominent. For example, the SG295 hot - rolled high - elongation welded cylinder steel produced by HBIS Tangsteel can have an elongation rate of 38 - 44% while ensuring strength, which is 17% higher than that of conventional welded cylinder steel. This is due to the optimization of the production process. During smelting, the cleanliness of molten steel is strictly controlled, the order of alloy addition is optimized, and the casting speed is stably controlled to ensure the quality of the cast billet. During rolling, the soaking time is optimized and an advanced two - stage laminar flow cooling control is adopted to improve performance. In terms of chemical composition, the contents of elements such as carbon, manganese, and silicon will be adjusted according to performance requirements to achieve a balance between strength and elongation and other properties. In application, it is mainly used in the manufacturing of welded gas cylinders. For example, after pickling, it can be used to make deep - drawn gas tanks. The SG295 hot - rolled coil products of Xinsteel Group have also passed the certification of the Thailand Industrial Standards Institute (TIS) and can be extended to the industrial and livelihood fields in Southeast Asia, used in the manufacturing of relevant industrial facilities and civil gas cylinders in the local area, providing basic material support for industrial production and livelihood needs.
