Stainless - steel welded pipes are steel pipes commonly made by welding after the coil plates or strip steels are curled and formed through units and molds. The production process of welded steel pipes is simple, the production efficiency is high, there are a large variety of types and specifications, and the equipment investment is low. With the rapid development of China's economic construction, the consumption of stainless steel keeps increasing, and the demand for stainless - steel pipes is also expanding day by day, so the market prospect is promising.
The market demand for stainless - steel seamless pipes is reflected in basic industries such as petroleum, chemical engineering, and power generation, and its demand accounts for one - third of the total consumption of stainless - steel seamless pipes. There are also relatively large demands in industries such as automobiles, shipbuilding, construction, and environmental protection.
Stainless - steel welded pipes are mainly used in industries such as heat exchanger tubes, fluid pipes, pressure pipelines, mechanical structure pipes, and urban landscapes. The annual consumption is about 700,000 tons. The demand for industrial stainless - steel welded pipes is relatively high, and the production process is mature. In China, the annual consumption of industrial stainless - steel welded pipes is about 150,000 tons, and a part still needs to be imported.
Judging from domestic stainless - steel pipe products, austenitic steel is mainly used as the steel type. Product varieties include: seamless steel pipes, including cold - drawn pipes, cold - rolled pipes, hot - extruded pipes, centrifugally - cast pipes, and spun pipes; welded pipes include plasma - welded, argon - arc - welded, submerged - arc - welded, laser - welded, and high - frequency - welded pipes. The stainless - steel pipes that can be produced basically cover the types and specifications of standards in various countries around the world. There are also more than a hundred types and specifications of stainless - steel special - shaped pipes, and the product applications involve many fields in both industrial and civilian use. However, overall, domestic stainless - steel pipes still have a certain gap with market demands in terms of varieties, specifications, and quantities.
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Time：2024-07-23
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