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Duplex steel is an alloy material. It is usually composed of iron, carbon, and other alloying elements (such as chromium, nickel, molybdenum, etc.)
Duplex steel gets its name because it consists of two different organizational phases (austenite phase and ferrite phase), which provide excellent strength and toughness properties and are commonly used to make a variety of parts and components with high strength requirements,The organization of this alloy is relatively more complex than that of single-phase steels, which provides better properties.Overall, duplex steel is a highly corrosion-resistant and superior-performing material suitable for use in various industrial sectors.

Item	China		American		Germany
	GB	ISC	UNS	ASTM	DIN EN/DIN	W-Nr.
N07718	GH4169	H41690	N07718	5596	NiCr19NbMo	2.4668
	(GH169)			5662
2205	022Cr22Ni5Mo3N	S22253	S31803		X2CrNiMoN 22-5-3	1.4462
	022Cr23Ni5Mo3N	S22053	S32205
2507	022Cr25Ni7Mo4N	S25073	S32750	2507	X2CrNiMoN25-7-4	1.4410
1.4162			S32101
1.4501	022Cr25Ni7Mo4WCuN	S27603	S32760		X2CrNiMoCuWN 25-7-4	1.4501
	00Cr23Ni7Mo3.5WCuN*
1.4460	022Cr25Ni6Mo2N	S22553	S31200		X3CrNiMoN 27-5-2	1.4460
1.4362	022Cr23Ni4MoCuN		S32304	2304
1.4547	015Cr20Ni18Mo6CuN		S31254	S31254
cd4mcu			J93370
904L	015Cr21Ni26Mo5Cu2	S31782	904L	N08904
S34709		S34779	347H	S34709
1.4451	ZG03Cr26Ni6Mo3Cu3N		J93372
s32550	03Cr25Ni6Mo3Cu2N	S25554	255	S32550	X2CrNiMoCuN 25-6-3	1.4507
347H		S34779	S34709	347H
F55	022Cr25Ni7Mo4WCuN	S27603	S32760		X2CrNiMoCuWN 25-7-4	1.4501
	00Cr23Ni7Mo3.5WCuN*
A890 Grade 5A	ZG03Cr26Ni7Mo4N		J93404
A890 Grade 4A	ZG03Cr22Ni5Mo3N		J92205
A890 Grade 3A			J93371
A890 Grade 6A			J93380
A890 Grade 1B	ZG03Cr26Ni6Mo3Cu3N		J93372
LDX 2101			S32101
A182 F51	022Cr22Ni5Mo3N	S22253	S31803
	022Cr23Ni5Mo3N	S22053	S32205
zeron 100	022Cr25Ni7Mo4WCuN 00Cr23Ni7Mo3.5WCuN*	S27603	S32760		X2CrNiMoCuWN 25-7-4 1.4501
F53	022Cr25Ni7Mo4N	S25073	2507	S32750	X2CrNiMoN25-7-4	1.4410
ce8mn			J93345
3RE60	022Cr19Ni5Mo3Si2N	S21953	S31500
	(00Cr18Ni5Mo3Si2)
1.4104	Y10Cr17	S11717	430F	S43020	X14CrMoS 17
	(Y1Cr17)				(X12CrMoS 17)
S31703	022Cr19Ni13Mo3	S31703	317L	S31703	X2CrNiMo 18-15-4
	(00Cr19Ni13Mo3)				(X2CrNiMo 18-16)	1.4438
S32900			329	S32900
2304	022Cr23Ni4MoCuN	S23043	2304	S32304
S32654	015Cr24Ni22Mo8Mn3CuN		654SMO	S32654	X1CrNiMoCuN24-22-8	1.4652
	654SMo	S32652
S41008	06Cr13	S41008	410S	S41008	X6Cr 13
	(0Cr13)				(X7Cr 13)	1.4000
1.4539	015Cr21Ni26Mo5Cu2	S31782	904L	N08904
F60	022Cr22Ni5Mo3N	S22053	S31803		X2CrNiMoN 22-5-3	1.4462
	022Cr23Ni5Mo3N	S22253	S32205

Zhongzheng Stainless Steel Co., Ltd. was established in 2018 with aregistered capital of 20 million yuan. lt is a manufacturing company thatintegrates the production of special materials, manufacturing andprocessing, sales, and technology development. The company covers anarea of 2,000 square meters and has 200 employees. it has built worldclass stainless steel seamless pipe (hot piercing, cold drawing, cold rollingproduction lines, precision steel pipe production lines, and large, mediumand small-sized welded pipe production lines. The company has beencommitted to providing high performance, high precision, hightemperature-resistant, high pressure-resistant, and corrosion-resistantsolutions and technical services for industrial equipment pipeline systems.The company specializes in producing a series of steel pipes, pipe fittingsflanges, etc., such as high-temperature (nickel-based) alloys, austeniticduplex steel, urea grade stainless steel, super stainless steel, etc. Thecompany is equipped with an annual production capacity of 5,000 tons ofstainless steel seamless pipe production line, 7,000 tons of welded pipeproduction line, and 500 tons of pipe fittings production line, etc. lt canoroduce stainless steel seamless pipes with diameters ranging from ‌Φ‌6 to‌Φ‌762 and wall thicknesses ranging from 0.5 to 70 mm, stainless steelwelded pipes with diameters ranging from ‌Φ‌15 to ‌Φ‌2200 and wallthicknesses ranging from 0.5 to 80 mm, pipe fittings, and various stainlesssteel ingots, round steel, rough pipes, etc., according to customerrequirements and in accordance with standards such as GB, ASTM, etc.

 

Our Advantages

Our company carries a wide range of stainless steel tube&pipe products, enabling us to quickly and affordably fulfill client material requests. Whether you need a standard stainless steel tube&pipe or a custom special surface technology's coil, we have the inventory and sourcing capabilities to get the job done.

Product Parameters

Surface Finish	Definition	Application
2B	Those finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster.	Medical equipment, Food industry, Construction material, Kitchen utensils.
BA	Those processed with bright heat treatment after cold rolling.	Kitchen utensils, Electric equipment, Building construction.
NO.3	Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001.	Kitchen utensils, Building construction.
NO.4	Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001.	Kitchen utensils, Building construction, Medical equipment.
HL	Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size.	Building construction
NO.1	The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling.	Chemical tank, pipe.