Petrochemical industry including chemical fertilizer industry, the demand for stainless steel tube is great, the industry mainly uses stainless steel seamless tube, specifications include: 304, 321, 316, 316L, 347, 317L, etc., the outer diameter is about ￠18-￠610, the wall thickness is about 6mm-50mm (generally choose specifications in φ 159mm above the medium and low pressure pipeline), the specific application field is: furnace tube, material conveying tube, heat exchanger tube, etc. Such as:

Heat resistant stainless steel pipe, mainly used for heat exchange and fluid transport, domestic market capacity of about 230,000 tons per year, high-end demand still need to rely on imports.

Duplex stainless steel tube, mainly used in chemical, chemical fertilizer heat exchanger and fluid tube market, because of its high strength, stress resistance, corrosion resistance and economic, its annual consumption of about 8000-10000 tons.

According to rough statistical analysis, the annual consumption of stainless steel oil casing, such as non-magnetic drill collar of stainless steel, Cr13 and Cr25 of super ferritic stainless steel with high corrosion resistance of CO, CO2 and Cl-corrosion, is more than 20,000 tons, and about 50,000 to 60,000 tons will be needed in 3 to 5 years. However, the import volume of this kind of stainless steel pipe is still large.