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Alloy 31 Tubes
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We could produce ALloy 31 tubes,ALloy31 tubes,ALloy 31 tubings,ALloy 31 seamless tubes,ALloy 31 U Bend Tubes,ALloy 31 U-tube,ALloy 31 welded tubes,ALloy31 boiler tubes, ALloy 31 heat exchanger tubes,ALloy 31 Capillary tubes,ALloy 31 Thermocouple tubes,ALloy 31 Superheater tubes and reheater tubes,ALloy31 condenser tube,ALloy 31 finned tubes,ALloy 31 furnace tubes,ALloy 31 instrumentation tubes,ALloy 31 Evaporator tubes,ALloy 31 honed tubes, ALloy 31 coiled tubes,ALloy 31 Precision tubes,ALloy 31 High pressure tubes,ALloy 31 hydraulic tubes from china

The outer diameter of ALloy 31 tubes that we could do is from 0.4MM to 850MM,The thickness of ALloy 31 tubes that we could do is from 0.12MM to 100MM

As per surface finish of ALloy 31 seamless tubes and welded tubes, we could do 180G, 320G Satin / Hairline(Matt Finish, Brush, Dull Finish),PICKLING surface finish as per the requirement of the clients

We could produce ALloy 31 seamless tubes and weled tubes as per the standard of ASTM B626 and ASTM B619

As per heat treatment of ALloy 31 tubes, we could do solution treatment, ageing treatment as per the requirement of the clients

As per material of ALloy 31 tubes, our raw material has been melted by  EAF+VOD-ESR methods

ALloy 31 is is an iron-nickel-chromium-molybdenum alloy with nitrogen addition.

The chemical composition of ALloy31 seamless tubes and weled tubes is as follows

Carbon

Silcon

Manganese

Phosphorous

Sulfur

Nickel

Chrominium

Mobdlyneum

Copper

Nitrogen

Specification

≦ 0.015

≦ 0.3

≦ 2.0

≦ 0.020

≦ 0.010

30.0-
 32.0

26.0-
 28.0

6.0-
 7.0

1.0-
 1.4

0.15-
 0.25


The mechanical propery of ALloy 31 seamless tubes and weled tubes is as follows

Temper

Annealed

Tensile Rm

94

ksi (min)

Tensile Rm

650

MPa (min)

R.p. 0.2% Yield

41

ksi (min)

R.p. 0.2% Yield

280

MPa (min)

Elongation (2.02 or 4D gl)

40

% (min)


In order to control the quality of ALloy 31 tubes,We could do Corrosion Test,Chemical Analysis,Mechanical Testing,Reverse-bend and Re. flat tests,Eddy Current Testing,Hydrostatic Testing,Air Under Pressure Test,Visual Inspection,IGC Testing,O.P Testing,Micro Testing,Ultrasonic testing.Radiography Testing,Liquid Penetrate testing as per the requirement of the clients

As per the packing for ALloy 31 tubes, all our ALloy 31 seamless tubes and weled tubes will be Bundled with knitted plastic bag, wooden cases or according to customers' request.

Our ALloy 31 seamless tubes and weled tubes are widely used in many industries like,heat exchangers,air receivers,pressure vessels,Stripper columns, separators, splitter, columns, hydro treaters, hydro crackers, desalters,shipping building and Aviation,drilling stations, pipelines and refineries,processing units,mechanical equipment, crystalizer equipment,Offshore and onshore industry, such as subsea and deepwater offshore oil production systems, industrial air compressors, power generators and nitrogen generators and so on

We could supply Third party inspection certificate for ALloy 31 seamless tubes and weled tubes  such as TUV, SGS, LR, MOODY, ITS, DNV,BV,Lloyd's Reg. of Shipping ,GL,API as per the requirement of the clients.

Please send us the size of ALloy 31 seamless tubes and weled tubes that you need, we are glad to quote the best price for our clients.

Except ALloy 31 tubes,we also could produce ALloy 31 flanges,ALloy 31 plates,ALloy 31 fastener,ALloy 31 bolts,ALloy 31 pipe fittings,ALloy 31 pipes,ALloy 31 bars,ALloy 31 springs