AISI 321 Pipes
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We could produce AISI 321 pipes,321 pipes,AISI 321 seamless pipes,AISI 321 welded pipes,AISI 321 boiler pipes, AISI 321 heat exchanger pipes,AISI 321 Capillary pipes,321 Thermocouple pipes,AISI 321 Superheater pipes and reheater pipes,AISI 321 condenser pipe,AISI 321 finned pipes,321 furnace pipes,AISI 321 instrumentation pipes,AISI 321 Evaporator pipes,AISI 321 honed pipes,321 coiled pipes,AISI 321 Precision pipes,AISI 321 High pressure pipes,AISI 321 hydraulic pipes from china

The outer diameter of AISI 321 pipes that we could do is from 0.4MM to 850MM,The thickness of AISI 321 that we could do is from 0.12MM to 100MM

As per surface finish of 321 pipes, we could do pickled and polish into bright surface as per the requirement of the clients, also for bright surface of AISI 321 pipes, we could meet 2D finish.No. 4 Finish,No. 6 Finish,No. 7 Finish as per the requirement of the clients

AISI 321 is similar to type 304 stainless but with a titanium addition of at least five times the carbon content.

The chemical composition of AISI 321 pipes is as follows

Chemical composition









≤ 0,08

≤ 1,0

≤ 2,0

≤ 0,045

≤ 0,015

17 – 19


9,0 – 12,0




5 x C ≤ 0,70

The mechanical propery of 321 seamless pipes is as follows

Mechanical Properties
Average Elevated Temperature TensileProperties

Temperature,  °F

Ultimate Tensile Strength, psi

.2% Yield Strength, psi




As per heat treatment of AISI 321 pipes, we could do solution treatment, annealed treatment as per the requirement of the clients

As per material of AISI 321 pipes, our raw material has been melted by  EAF+VOD-ESR methods

We produce AISI 321 seamless pipes and weled pipes as per the standard of ASTM B729 and ASTM B464

In order to control the quality of 321 seamless pipes and weled pipes, we will do Positive material identification (PMI),Visual inspection,Dimensional inspection.Laser micrometer inspection,Destructive testing( includes tensile, hardness, bending, flattening, flare and metallurgical tests),ultrasonic testing and pressure testing,Liquid Penetrate testing as per the requirement of the clients

Our AISI 321 pipes are packed wooden crates lined with wax craft paper, tri-wall clay-coated reinforced cases

Our AISI 321 seamless pipe and weled pipes are widely used in many industry :gas turbines, nuclear reactors and natural gas processing plants,valves, pumps and heat exchangers,steam turbines, pressure vessels,  heat exchangers, cooling towers, pipelines and so on

We could supply AISI 321 pipe material certificate as per En10204-3.1 or EN10204-3.2 by third parts(like TUV,DNV,GL,and so on)

Please send us the size and quantity of AISI 321 pipes that you need, we are glad to quote the best price for your side

Except AISI 321 pipes,we also could produce AISI 321 flanges,AISI 321 plates,AISI 321 fasteners,AISI 321 bolts,AISI 321 pipe fittings,AISI 321 bars,AISI 321 tubes,AISI 321 springs