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ASTM A790 UNS S31803/2205 DUPLEX STEEL THICK WALL SEAMLESS PIPE

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ASTM A790 UNS S31803/2205 DUPLEX STEEL THICK WALL SEAMLESS PIPE

Name: ASTM A790 UNS S318032205 DUPLEX STEEL THICK WALL SEAMLESS PIPE
Brand: YUHONG
Price: 1 USD

China ASTM A790 UNS S31803/2205 DUPLEX STEEL THICK WALL SEAMLESS PIPE wholesale

Brand Name : YUHONG

Model Number : ASTM A790 UNS S31803/S32205

Certification : ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Place of Origin : CHINA

MOQ : 100KGS

Price : Negotiable

Payment Terms : T/T, L/C AT SIGHT

Supply Ability : 500 TONS

Delivery Time : Depending on QTY

Packaging Details : Ply-wooden Case /Iron Case/ Bundle with plastic Cap

Material Grade : S31803/S32205

Standard : A789/A790/A928

NDT : ET, UT, HT, PT

Application : Industry, oil and gas

Type : Seamless/Welded

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ASTM A790 UNS S31803/2205 DUPLEX STEEL THICK WALL SEAMLESS PIPE

Abstract of ASTM A790

The specification covers seamless and straight-seam welded ferritic/austenitic steel pipe for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. The pipe shall be made by the seamless or an automatic welding process, with no addition of filler metal in the welding operation. Heat analysis shall be made to determine the percentages of the elements specified. Tension tests, hardening tests, flattening tests, hydrostatic tests and nondestructive electric tests shall be made to conform to the specified requirements.

About Grade UNS S31803

Stainless steel alloy grades such as UNS S31803 prove to be particularly useful in applications that are susceptible to stress related corrosion cracking. SCC or stress related corrosion cracking in pipes can have harmful effects on not only the workers in the factory but also to the business itself. Since ASTM A790 UNS S31803 Duplex Steel Seamless Pipe is resistant to SCC, the piping system becomes durable and it has longevity in comparison to conventional steels.

Besides having superior resistance to SCC, the ASME SA 790 UNS S31803 Pipe has improved mechanical characteristics like higher yield strength, which incidentally is almost twice that of a traditional austenitic stainless steel alloy. Pipes under specification ASTM A790, are produced either in a seamless manner or they have a welded construction. The automatic welding process used to weld the ASTM A790 Pipe is to be done without the use of any filler metal. The specification also calls for determining the percentage of elements used to alloy both ASTM A790 Grade UNS S31803 Welded Pipe and seamlessly constructed ones as well. Testing is also an important parameter of these pipes. In addition to a nondestructive electric test, the ASTM A790 UNS S31803 Seamless Pipe is required to conform to the values of tension test, flattening tests, hydrostatic tests as well as a hardening test. Perfect impex is a large manufacturer and supplier of these pipes and we produce all kinds and variations of the product. The advantage to choose ASTM A790 Grade UNS S31803 Pipe manufacturer is to get 5 to 10% discount price compare to stockist and supplier in Mumbai and Prime quality material with Mill test Certificate.

Chemical Composition

Grade	C max	Si max	Mn max	P max	S max	Cr	Ni	Mo	N
UNS S32750	0.030	0.8	1.2	0.030	0.015	24.0-26.0	6.0-8.0	3.0-5.0	0.24-0.32
UNS S31803	0.030	1.0	2.0	0.020	0.020	21.0-23.0	4.5-6.5	2.5-3.5	0.08-0.20
UNS S31500	0.030	1.0	1.2-2.0	0.030	0.030	18.0-19.0	4.5-5.5	2.5-3.5	0.05-0.10

Physical Properties

Grade	Y.S.MPa min	T.S.Mpa min	Elongation %	Hardness HRC
UNS S32750	550	800	15	20
UNS S31803	450	620	25	20
UNS S31500	440	630	30	20

YUHONG Quality Tests:

Corrosion Test	Conducted only when specially requested by the client
Chemical Analysis	Test done as per required quality standards
Destructive / Mechanical Testing	Tensile \| Hardness \| Flattening \| Flare \| Flange
Reverse-bend and Re. flat tests	Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end
Eddy Current Testing	Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System
Hydrostatic Testing	100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .
Air Under Pressure Test	To check any evidence of air leakage
Visual Inspection	After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections

Supplementary Testing:

Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:

Eddy Current Testing
O.P Testing
Radiography Testing

Corrosion Testing
Micro Testing
Macro Testing

IGC Testing
Ultrasonic testing
Liquid Penetrate testing

Duplex Stainless Steel Pipe Application:

Chemical processing, Transport and Storage.
Oil and gas exploration and offshore rigs.
Oil and gas refining.
Marine environments.
Pollution control equipment.
Pulp and paper manufacturing
Chemical process Plant

ASTM A790 UNS S31803/2205 DUPLEX STEEL THICK WALL SEAMLESS PIPE

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