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China’s high-end stainless steel pipe invisible champion enterprise Hay:A02ZJJL

ZJJL Stainless Steel Technology Corporation is committed to the research and development and production of high-end stainless steel pipes and special alloy pipes, pipe fittings, flanges, bars and pipe prefabricated parts.

The company was listed on the Shenzhen Stock Exchange in 1998. In recent years, it has established a high-performance alloy material research and development center, introducing the most advanced 4200-ton extruder in the world, 630 medium and large diameter continuous forming stainless steel welded pipes, and nuclear power steam generator heat transfer pipes. , An annual output of 8500KM of precision pipes for nuclear power and other fields.

The company mainly produces stainless steel seamless pipes and stainless steel welded pipes for industrial use. The products are widely used in petrochemical, natural gas, power equipment (including nuclear power), machinery manufacturing, aerospace and other fields.

Divided by the production process, the company's leading products are mainly divided into seamless pipes, welded pipes, composite pipes and pipe fittings, flanges.


The seamless pipe products are billeted by the world's advanced hot extrusion process or perforation process, followed by subsequent cold rolling or cold drawing, and pipe bending and other processes;


The welded pipe products are produced by advanced processes such as FFX forming and JCO forming.


Application field


The company's main products can be divided into U-shaped heat transfer tubes for steam generators, nickel-based alloy oil well tubes, precision tubes, super (super) critical boiler tubes, (super) duplex stainless steel tubes, instrumentation tubes, bimetal composite tubes…


Petroleum, chemical and natural gas industries account for 50%-60% of revenue


From the analysis of downstream industries, the petroleum, chemical, natural gas, and power equipment manufacturing industries account for a relatively high proportion. Among them, the proportion of sales in the petroleum, chemical, and natural gas industries has basically remained at around 50% in recent years. The company has increased the deployment of high-end equipment manufacturing, aerospace, nuclear power and new materials and other fields, to a certain extent, hedged the operating risks brought about by the downturn of traditional industries.

The company's excellent product quality has won unanimous recognition from domestic and foreign customers, and has become a qualified supplier of Sinopec, PetroChina, CNOOC, Harbin Electric, Shanghai Electric, Dongfang Electric, and State Power Investment Corporation. Total, Saudi Aramco, Petrobras, BASF, Covestro, Dow Chemical, DuPont, Framatome, Samsung Engineering and other world-class qualified suppliers.

At present, the company has an annual production capacity of 150,000 tons of industrial stainless steel pipes, and has formed austenitic/ferritic duplex stainless steel seamless pipes, super duplex stainless steel seamless pipes, and stainless steel for ultra (super)critical power station boilers. Seamless pipes, nickel-based corrosion-resistant alloy oil well pipes, large-diameter thick-walled stainless steel welded pipes for oil and gas transportation, ultra-long stainless steel welded U-shaped pipes for large heat exchangers, seawater corrosion ferritic stainless steel welded U-shaped pipes, seawater desalination and power stations Including titanium and titanium alloy welded tubes, U-shaped heat transfer tubes for evaporators, and TF/PF conduits for ITER devices, it covers a variety of industrial special stainless steel and nearly 100 varieties of industrial stainless steel tube products.

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