Specifications

China Duplex Steel Uns S31803 Pipes
1. Professional manufacturer
2. ISO9001, SGS certified
3. Professional export team

China duplex steel uns s31803 pipes

  

Uns s31803 pipe
1. Professional manufacturer
2. ISO9001, SGS certified
3. Professional export team
1. Uns s31803 pipe
1) Grades: 304/304L/304H, 316/316L, 321/321H, 317/317L, 310S, 347H, 2205, S31803 etc.
2) O. D.: 10 - 530mm 1/8inch - 60inch ND
3) W. T.: 0.8 - 30mm
4) Process method: Cold drawn / cold rolled
5)Surface: BA, mirror finish, HL, pickled


2. General Introduction:

3. Tensile Requirements

4. Qur Strength
1). Professional manufacturer
2). Quality and Innovation, Technology
3). Available in all size
4). Timely/Prompt Delivery
5). Competitive Prices
6). Best Service
7). Drawing Accepted

Grade	Heat treatment °C	Rm(Mpa)≥	Rp(Mpa)≥	A(%)≥	hardness≤
					HB	HR
S32750(SAF2507) 00Cr25Ni7Mo4N	1025-1125 Water quenched	800	550	15	310	32
S31803/S32205 (SAF2205) 00Cr22Ni5Mo3N	1020-1100 Water quenched	620	450	25	290	30.5
S31500(3RE60) 00Cr18Ni5Mo3Si2	980-1040 Water quenched	630	440	30	290	30.5

  

Quality Control

ISO 9001: 2000, Pressure Equipment Directive 97/23/
EC & AD2000-W0, RTN, GOST, IQNET

Classification Society Approvals
BV, DNV, LR, GL, ABS, NK, KR, CCS.

UNS S31803 Description
One kind of duplex stainless steels, 2205 alloy UNS S32305, S31803, is made up of 22% chromium and 3% nickel molybdenum and 5-6% nitrogen compound type stainless steel alloy composition. 2. It has high strength, good impact toughness and good overall and local association, strong corrosion resistance. With 316 l and 317 l austenitic stainless steel, compared to 2205 alloy in the resistance to pitting spots and cracks of superior performance, it has high corrosion resistance, compared with the austenitic, its lower thermal expansion coefficient, thermal conductivity is higher. 3. Areas of application:
The pressure vessel, pressure tanks, high pressure pipes, heat exchangers, chemical processing industry.

Applications
Petroleum, chemical industry, chemical fiber, smelt, medicalmachinery,
Papermaking, heat preservation and refrigeration, mechanicalequipment, food,
Electricity, water conservancy, architecture, aerospace, navigation shipbuilding,
Environmental protection and boilerheat exchanger.

About Us

Nanjing Maici Titanium Industry Co., Ltd established in 2004 with the fixed assets of 80 million yuan and more than 120nos of existing staff. Maici is located in Nanjing Jiangning Airport Industrial Park, covers an area of 18,000 square meters.

 

Maici is a private joint-stock high-tech enterprise, specialized in design, manufacture and installation oftitanium, nickel, zirconium, tantalum and high grade stainless steel and other special materials pressure pipelines, chemical equipment and non-standard pipe fittings including which special material pressure pipeline is in the domestic leading level from the processing capacity to the marketing scale 

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