There is great demand for stainless steel pipe in the petrochemical industry including chemical fertilizer industry.The main use is stainless steel seamless pipe, specifications include: 304, 321, 316, 347, 316L, 317L. Diameter from 18mm to 610mm, the wall thickness is about 6mm-50mm (usually choose diameter above 159mm in low pressure pipeline fields), mainly as furnace tube, material conveying pipe, heat exchanger tube etc.
For example: Heat resistant stainless steel pipe, mainly used for heat exchange and fluid delivery, the domestic market capacity of this tube is about 230 thousand tons per year, and high-end demand still need to rely on imports.
Duplex stainless steel pipe is mainly used in chemical, chemical heat exchanger and fluid pipe market, because of its high strength, stress resistance, corrosion resistance and economy, the annual consumption of this pipe is about 8000-10000 tons.
Stainless steel casing tube, the use of stainless steel super magnetic drill collar in oil drilling, high resistance to CO, CO2 and Cl- corrosion ferritic stainless steel Cr13 and Cr25 oil casing, according to rough statistics analysis ,the amount of this tube is more than 20 thousand tons, year after year 3~5 will take approximately 5~6 million tons, while the imported amount of stainless steel tube is still large.
In addition, the petrochemical industry is the potential market for transporting oil pipe and the low-temperature cracking pipe.because of its special requirements and device installation and maintenance inconvenience, and requirements of device life cycle is long, To control the material properties and performance optimization by control the material composition and special heat treatment. Another potential market for chemical fertilizer industry (urea, phosphate) special steel pipe, steel is mainly 316Lmod and 2re69.
As an important part of the chemical industry, the petrochemical industry includes a lot of production sectors, such as chemical fertilizers, rubber, synthetic materials and other industries. Petrochemical industry is the basic industry of economic development, involving many aspects of the real economy.
At present, a set of poly phenol device maintenance required for replacement of stainless steel tube is 99.1 tons, of which 108mm- 630mm large diameter stainless steel pipe accounted for 53.79%.
