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ASTM A790 UNS 31803 Duplex Steel Seamless Pipe For Marine Environments

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Yuhong Group Co.,Ltd

City: ningbo

Province/State:zhejiang

Country/Region:china

Tel:0086-574-88013900

Contact Person:
Mr.Jikin Cai View Contact Details

ASTM A790 UNS 31803 Duplex Steel Seamless Pipe For Marine Environments

Brand Name	Yuhong Group
Model Number	ASTM A790 UNS 31803
Certification	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin	China
Minimum Order Quantity	100 kgs
Price	Negotiable
Payment Terms	T/T, L/C
Delivery Time	7 days
Packaging Details	Ply-wooden Case /Iron Case/ Bundle
Standard	ASTM A790
Material Grade	UNS31803/31500/32750
NDT	ET, UT, HT , PT
Application	Oil and Gas

Detailed Product Description

ASTM A790 S31803/S31500 (1.4410)Duplex Stainless Steel Pipes

S31500 material is a duplex (austenitic-ferritic) stainless steel with characters as High resistance to stress corrosion cracking (SCC) in chloride, bearing environments, Good resistance to general corrosion and pitting, High mechanical strength, roughly twice the proof strength of austenitic grades, Good resistance to erosion corrosion and corrosion fatigue, Physical properties that present design advantages, Good weldability

Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),

UNS32760(1.4501)

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

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

Some of the quality tests carried out by us includes:

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

Product Tags: Marine Environments Duplex Steel Pipe UT Seamless Duplex Steel Pipe Steel Duplex Seamless Pipe

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