We could produce AISI 309 tubes,309 tubes,AISI 309 tubings,AISI 309 seamless tubes,AISI 309 U Bend Tubes,AISI 309 U-tube,AISI 309 welded tubes,309 boiler tubes, AISI 309 heat exchanger tubes,AISI 309 Capillary tubes,AISI 309 Thermocouple tubes,AISI 309 Superheater tubes and reheater tubes,309 condenser tube,AISI 309 finned tubes,AISI 309 furnace tubes,AISI 309 instrumentation tubes,AISI 309 Evaporator tubes,AISI 309 honed tubes, AISI 309 coiled tubes,AISI 309 Precision tubes,AISI 309 High pressure tubes,AISI 309 hydraulic tubes from china

The outer diameter of AISI 309 tubes that we could do is from 0.4MM to 850MM,The thickness of AISI 309 tubes that we could do is from 0.12MM to 100MM

As per surface finish of AISI 309 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 AISI 309 seamless tubes and weled tubes as per the standard of ASTM B729 and ASTM B464

As per heat treatment of AISI 309 tubes, we could do solution treatment, ageing treatment as per the requirement of the clients

As per material of AISI 309 tubes, our raw material has been melted by  EAF+VOD-ESR methods

AISI 309 is superior to 304 stainless in both strength and corrosion resistance.

The chemical composition of 309 seamless tubes and weled tubes is as follows

Chemical composition ¹
Carbon ≤ %	Silcon %	Manganese ≤ %	Phosphorous ≤ %	Sulfur ≤ %	Chrominium %	Molybdenum	Nickel %	V
0,20	1,50-2,50	2,0	0,045	0,015	19,0-21,0		11,0-13,0
Niobium	Titabium	Aluminium	Cobalt	Copper	Nitrogen ≤ %	Iron
					0,11

The mechanical propery of AISI 309 seamless tubes and weled tubes is as follows

Properties	Metric
Tensile  strength	91 KSI
Yield  strength (@ strain 0.200%)	45 KSI
Elongation  at break (in 50 mm)	45%
Hardness,  Brinell	147
Hardness,  Rockwell B	85
Hardness,  Vickers (converted from Rockwell B hardness)	169

In order to control the quality of AISI 309 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 AISI 309 tubes, all our AISI 309 seamless tubes and weled tubes will be Bundled with knitted plastic bag, wooden cases or according to customers' request.

Our AISI 309 seamless tubes and weled tubes are widely used in many industries like,mechanical engineering, in harbour cranes, ship deck cranes, truck cranes and construction cranes as well as in excavators, antenna systems, in aviation and aerospace, in the offshore technology, rail vehicles, telescopes, tunnelling machines, wind energy turbines, underwater turbines and solar energy plants and so on

We could supply Third party inspection certificate for AISI 309 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 AISI 309 seamless tubes and weled tubes that you need, we are glad to quote the best price for our clients.

Except AISI 309 tubes,we also could produce AISI 309 flanges,AISI 309 plates,AISI 309 fasteners,AISI 309 bolts,AISI 309 pipe fittings,AISI 309 pipes,AISI 309 bars,AISI 309 springs