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UNS S31803 Pipes
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We could produce UNS S31803 pipes,S31803 pipes,UNS S31803 seamless pipes,UNS S31803 welded pipes,UNS S31803 boiler pipes, UNS S31803 heat exchanger pipes,UNS S31803 Capillary pipes,S31803 Thermocouple pipes,UNS S31803 Superheater pipes and reheater pipes,UNS S31803 condenser pipe,UNS S31803 finned pipes,S31803 furnace pipes,UNS S31803 instrumentation pipes,UNS S31803 Evaporator pipes,UNS S31803 honed pipes,S31803 coiled pipes,UNS S31803 Precision pipes,UNS S31803 High pressure pipes,UNS S31803 hydraulic pipes from china

The outer diameter of UNS S31803 pipes that we could do is from 0.4MM to 850MM,The thickness of UNS S31803 that we could do is from 0.12MM to 100MM

We could meet size tolerance for UNS S31803 Pipes is as follows:OD : + ± 0.5% of specified diameter based on circumferential measurement. Thick : Minimum thickness at any point not more than 0.3 mm under nominal thi,Out of Roundness : difference between maximum and minimum OD 1% ,Straightness : 3 mm in 3 mtrs

Length : As per customer specification

As per surface finish of S31803 pipes, we could do pickled and polish into bright surface as per the requirement of the clients, also for bright surface of UNS S31803 pipes, we could meet 2D finish.No. 4 Finish,No. 6 Finish,No. 7 Finish as per the requirement of the clients

UNS S31803 is a duplex stainless steel designed to combine improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength when compared with other stainless alloys.


The chemical composition of UNS S31803 pipes is as follows

Analysis

Carbon

0.03% max

Chromium

21.00-23.00%


Manganese

2.00% max

Nickel

4.50-6.50%

Silicon

1.00% max

Molybdenum

2.50-3.50%

Sulphur

0.015% max

Nitrogen  

0.10-0.22%

Phosphorous

0.035% max



The mechanical propery of S31803 seamless pipes is as follows

Typical Mechanical Properties*

Tensile UTS
N/mm²

0.2% Proof Stress

N/mm² min

Elongation

% min

Hardness

HB max

Impact

J  

650-880

448

25

290

100



As per heat treatment of UNS S31803 pipes, we could do solution treatment, annealed treatment as per the requirement of the clients

As per material of UNS S31803 pipes, our raw material has been melted by  EAF+VOD-ESR methods

We produce UNS S31803 seamless pipes and weled pipes as per the standard of ASTM B729 and ASTM B464

We will do Destructive testing for our every piece of UNS S31803 seamless pipes and weled pipes:such as tensile tests (including hot tensile testing),impact tests (up to -196 degrees Celsius),bend tests,hardness tests,intercrystalline corrosion test in accordance with ASTM A262 practice E,pitting corrosion test in accordance with ASTM G48A,metallurgical tests (metal analysis, macro & micro examination)

We ALso do Non-destructive testing for our every piece of UNS S31803 seamless pipes and weled pipes:such as eddy current testing,ultrasonic testing,hydro testing,x-ray testing (radiographic & radioscopic),positive material indentification testing

Our UNS S31803 pipes are packed wooden crates lined with wax craft paper, tri-wall clay-coated reinforced cases

Our UNS S31803 seamless pipe and weled pipes are widely used in many industry :high pressure pumps,Centrifugal pumps,power generators and nitrogen generators,Food Processing equipment and storage.Columns & Towers,Tanks ,Silos,Process Modules,Preheaters,Hydrogenators,Offshore and onshore industry, such as subsea and deepwater offshore oil production systems, industrial air compressors


Our UNS S31803 seamless pipe and weled pipes could be by Third party approvals,such as American Bureau of Shipping,Bureau Veritas,Det Norske Veritas,Germanischer Lloyd,Lloyd's Register,PED and so on

Please send us the size and quantity of UNS S31803 pipes that you need, we are glad to quote the best price for your side

Except UNS S31803 pipes,we also could produce UNS S31803 flanges,UNS S31803 plates,UNS S31803 fastener,UNS S31803 bolts,UNS S31803 fittings,UNS S31803 bars,UNS S31803 tubes,UNS S31803 springs