Austenitic stainless steel refers to the stainless steel with chromium nickel as the main alloy element and has austenitic structure at room temperature. The stable austenitic structure is obtained when Cr, Ni and C are about 18%, 8%~10% and 0.1% respectively. Austenitic chromium-nickel stainless steel includes the well-knew 18CR-8Ni steel and the high Cr-Ni series steel developed by adding elements such as Mo, Cu, Si, Nb, Ti and so on.
Austenitic stainless steel is nonmagnetic and has good mechanical properties (high toughness and malleability), easy to be machined, stamped and welded. High chromium content greatly improves the corrosion resistance of steel, because the surface is easy to form a very dense and hard chrome oxide protective film. In the oxidizing environment, it has good corrosion resistance, heat resistance and low temperature resistance, suitable for heavy load and no high requirements corrosion resistance equipment and components, and has a very wide range of uses especially in civil, light industry and other fields.
Grads:304, 304L, 316, 316L, 310S, 321, 321H, 347, 347H
Chinese Standards: GB/T 12771-2019, GB/T 24593-2018, HG/T 20537.1~4-1992
American Standards: ASTM A312-21, ASTM A358-19, ASTM A249-18, ASTM A778-16, ASTM A813-14, ASTM A1016-18ï¼?
European standards: EN10217-7: 2021.
Super Austenitic stainless steel is a type of alloy content (MO, CR, Ni, N, etc.) significantly higher than that of ordinary austenitic stainless steel. It is one of the important directions for the development of high -quality special stainless steel. The typical of Super Austenitic stainless steel containing 6%molybdenum and 7%molybdenum.The synergy of CR, MO and N make Super Austenite stainless steel in acidic acid -containing has a very excellent anti -uniform corrosion performance. Under the conditions of seawater, gap, and low -speed scouring, it has good erosive resistance (Pren 56) and better resistant to resistance. Especially for sulfuric acid root ions, chloride ions and other acid root ions, it can be used in a very harsh working environment. In addition, Super austenitic Stainless Steel also has excellent comprehensive mechanical performance. Therefore, these steels are widely used in very harsh service environments such as flue gas treatment equipment, nuclear power industry, pharmaceutical engineering, pulp bleach, phosphate fertilizer and fertilizer industry, marine industry and waste treatment.
American standard: ASTM A312-21 ASTM A358-19 ASTM A249-18
European standard: EN10217-7: 2021
Stainless Steel Seamless Pipe (abbreviated as seamless pipe) is a type of stainless steel pipe made by piercing or extruding solid pipe blanks, followed by cold rolling or drawing. Depending on the production method, it can be classified into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, and extruded pipes, etc. Our company possesses cold-rolling and cold-drawing seamless pipe production units, currently producing specifications ranging from �¦6*0.5mm~�¦325*50mm, with a single production length of up to 28000mm. The materials cover austenitic, super austenitic, austenitic-ferritic duplex stainless steel, high-temperature alloys, corrosion-resistant alloys, etc. It is widely used in petrochemical, chemical, machinery manufacturing, hydropower energy, aerospace, semiconductor, nuclear power, clean energy, papermaking, shipbuilding industry, food and food machinery, and other fields.
Sinosteel Stainless Steel Pipe Technology (Shanxi) Co., Ltd. is well structured and possesses complete product specifications, uses exquisite techniques and produces excellent quality. We produce different steel grades of austenitic and super austenitic stainless steel welded pipes, ferritic stainless steel pipes, duplex steel and super duplex steel pipes. We also produce nickel-base alloy pipes, titanium alloy pipes, copper alloy pipes and clad steel pipes with an outer diameter from 8mm to 3600mm, with wall thicknesses from 0.2mm to 120mm. We are one of the nationâ??s largest enterprises that can produce the most complete varieties and specifications of stainless steel welded pipes.
Our company has successively obtained ISO9001 Quality Management System Certification, GJB9001C Military Quality Management System Certification, ISO14001 Environmental Management System Certification, ISO45001 Occupational Health And Safety Management System Certification and the Manufacture License of Special Equipment of pressure piping component, Shanxi province Hygienic License for Drinking Water Hygiene and Safety Product, PED, European Pressure Equipment Directive, API 5LC / API 5LD certification of American Petroleum Institute, CU-TR (EAC) Certification and several national classification societies such as CCS, BV, DNV and LR. We have established close technical R & D and cooperative relationship with a number of scientific research institutions, has strong R & D and innovation capabilities, has won a number of national patents, and has been identified as a provincial and municipal enterprise technology center and the Technologically Advanced Little Giant enterprise.
