S31803 Duplex Fittings

  • S31803 Duplex Fittings Manufacturers, S31803 Duplex Fittings Factory, Supply S31803 Duplex Fittings
S31803 Duplex Fittings
  • China
  • 20-35 Days
  • 60-80 Tons/month

S31803 duplex fittings have good welding performance, compared with ferrite stainless steel and austenitic stainless steel fittings. it is not like the welding heat-affected zone of ferrite stainless steel, and the plasticity and toughness are greatly reduced due to severe grain coarsening. Nor is it as sensitive to welding thermal cracks as austenitic stainless steel.

Due to its special advantages, S31803 duplex fittings have been widely used in petrochemical equipment, seawater and wastewater treatment equipment, oil and gas pipelines, paper-making machinery and other industrial fields. In recent years, it has also been used in the field of bridge load-bearing structure.

It has a good prospect of development. Duplex stainless steel is composed of half ferrite phase and austenite phase in the quenched microstructure, and the content of the minimum phase may be up to 30%.

S31803 duplex fittings

Gerneral Products Introduction


S31803 duplex fittings





ASTM A815 UNS S31803/S32205/S32750/S32760

Manufacturing Standards

ASME B16.9, ASME B16.28

JISB2311,JIS B2312,JIS B2313

DIN 2605,DIN 2606 ,DIN2615,DIN2616

BG12459-90,GB/T13401,HGJ514 ,SH3408  ,SH3409, HG/T21635, HG/T21631

Bevel Ends

Bevel ends

Plain ends

Non-destructive testing

Magnetic particle test

Penetration test

Ultrasonic test

Radio graphic test

And, others as customers requirements

Surface Treatment

Sand blasted

Ball blasted

Antitrust varnish 


Electric power, Petroleum, Nuclear power, Petrochemical, Oil and gas, Ship-making, Chemical, 

Pharmaceutical, Paper making, and Building construction industries


Ply wooden cases

Ply wooden pallets 

And, other packing suitably protected for sea-worthy delivery

Delivery time

20-35 days


Europe, US, North America and Asia

Quality Control

Boberry Material Co.,Ltd. Stickily follow the quality management system ISO 9001 specification, and do a good job of trace ability follow-up from raw material, manufacturing processes, inspection, package to shipment.

S31803 duplex fittings are our advantage products, our modern testing facilities is the key quality guarantee. we have PMI test equipment, the latest size measuring instrument, and experienced inspectors for carrying out PT, MT, UT, RT and VT, meanwhile we can offer mill test report with 3.1 or 3.2 as customers requirements.

Other Information

1, If upto our minimum production quantity, for S31803 duplex fittings, we accept customized specification as drawings;

2, Payment terms: 30% deposit, the balance aganist with the copy of B/L

                              100% L/C at sight

3,Delivery terms: FOB, CIF, CNF 

The optimal solution
We will always choose the most appropriate process for each forging item, in order to manufacture product of stable quality during the shortest leading time. We guarantee our delivery product has the longest service life of similar products while at low cost to the extremely....more
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