We have more than 30 years on producing the duplex steel and super duplex steel seamless pipe and tube .
1) The yield strength is more than twice that of ordinary austenitic stainless steel, and it has the necessary requirements for forming Sufficient plasticity. The wall thickness of storage tanks or pressure vessels made of duplex stainless steel is 30-50% less than that of beneficial to reduce costs.2) It has excellent resistance to stress corrosion cracking. Even the duplex stainless steel with the lowest alloy content has higher resistance than austenitic stainless steel, especially in an environment containing chloride ions. Stress corrosion is a prominent problem that is d stainless steel. 3) The corrosion resistance of 2205 duplex stainless steel, which is most commonly used in many media, is better than ordinary 316L a duplex stainless steel has extremely high corrosion resistance. In some media, such as acetic acid and formic acid It can even replace and even corrosion-resistant alloys.4) It has good local corrosion resistance. Compared with austenitic stainless steel with the same alloy content, its wear corrosion resistance is better than austenitic stainless steel. 5) The linear expansion coefficient of austenitic stainless steel is lower than that of carbon steel. It is suitable for connecting with carb engineering significance, such as the production of composite plates or linings.6) Whether under dynamic or static load conditions, it has a higher energy absorption capacity than austenitic stainless steel. This is f sudden accidents such as collisions and explosions. Duplex stainless steel has obvious advantages and has practical application value.
1. An austenitic-ferritic super duplex stainless steel with nitrogen.2. High resistance to stress corrosion cracking in environments containing hydrogen sulfide or chloride-bearing environments.3. Excellent resistance to spot corrosion, gap corrosion and uniform corrosion, high resistance to erosion corrosion and corrosion fatigue4. Good weldability, good hot-working properties because of good physical properties and very high mechanical strength5. Application for mechanical and structural components that require both high strength and high corrosion resistance and burning (waste) gas purification equipment. 6. Benefits of UNS32750 SuperDuplex Stainless Steel
Process industry components in nitric acid, dioxide, polypropylene & PVC production, caustic evaporatorsEquipment handling organic & fatty acidsMarine industry and shipbuilding propellers, shafts, rudders, shaft seals, pumps, bolts, fasteners, valves, instrumentationOil and chemical tankersOil & Gas industry pumps, valves, pipe, vessels, wellhead equipment, subsea equipmentPollution control systems, fans and pumps, wet scrubbers, incinerators, flue gas desulphurization (FGD)Pulp & paper industry components such as black liquor heater tubes, digester blow valves, rotary feed valves, I.D.fans, brownstock washers, precipitators, bleaching componentsFood Industry applications including sugar cane centrifuges, corn and vegetable processing plantAgrochemicals production such as fertilizers (based on wet phosphoric acid)Sewage treatment, seawater cooling, desalination plants
Special grade from the group of super-strong acid-resistant stainless steels similar to 1.4410 / X2CrNiMoN25-7-4 / UNS S32750. The steel exhibits high strength properties with relatively high resistance to various types of corrosion, including intergranular corrosion. 1.4507 and UNS S32550 materials are used in the paper, chemical, nitrogen, and aviation industries as well as in power engineering for screws, shafts, sleeves, fittings, installations and pipelines, pump parts, tanks for chemicals, heat exchangers, radiator parts and aircraft constructions .
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