A typical application of the Stainless steel 304 pipe would be its use in heat exchanger. A heat exchanger is a system that causes transference of heat between two or more fluids

Stainless Steel 304 Pipe

Stainless Steel 304 Pipe

 Jindal 304 Seamless Pipe

Jindal 304 Seamless Pipe

SS 304 Welded Pipe<

SS 304 Welded Pipe


Since the SS 304 welded pipe is an economically viable option, they are more often used in heat exchangers. While heat exchangers require moderate resistance to corrosion and good tensile strength as primary properties, the very versatile SS 304 efw pipe is able to cater to their needs without causing a dent in the buyer’s pocket. Moreover, the Stainless Steel 304 erw pipe performs the functions rather effectively.

Therefore, the ASTM A312 tp 304 seamless pipe is a popular choice across various industrial sectors such as power stations, chemical plants, refrigeration, air conditioning, petrochemical plants as well as petroleum refineries. The ASTM A312 specified aisi 304 pipe have been designed keeping in mind their use for applications that not only involve high temperature conditions but also for general corrosive applications.

Cold working the ASME SA312 grade 304 pipe is usually performed in order to permanently change the crystalline structure of the alloy by application of mechanical strength. This in turn is what causes an increase in the tensile strength properties of the SS 304 seamless pipe, that too without the use of heat.


Must Read

Manufacturers produce SS 304 seamless pipe by extruding billet to specific length and welded pipe by jointing and welding the seam of Strip or coil. The cost of seamless pipe is 20% higher than a welded pipe no matter it is ERW or EFW. For drilling smls pipe is always better.  


Stainless Steel 304 Pipes Standard Specifications
ASTM / ASME Name ASTM A 312 ASME SA 312 / ASTM A 358 ASME SA 358
OD Sizes 1/8" To 30″NB Inch
Dimensions Standard ASME, ASTM and API
Size Range 1/2″ NB – 16″ NB

erw pipes Ranging in size from

1/2″ NB – 24″ NB
efw pipes outer diameter 6″ NB – 100″ NB
Most famous For Stainless Steel 304 Large Diameter Pipe
Pipes Schedule Thickness Range SCH120, SCH80, SCH40, SCH30, SCH20, XS, STD, SCH160, SCH60, XXS, SCH80, SCH140
Frequently Used Type Welded / ERW / Seamless / LSAW/ Fabricated Pipes
Available Pipes Form Hydraulic, Round Form Etc
Stock Length Double Random, Cut Length & Single Random
Pipes End Finishing Beveled End, Plain End, Theaded


Various Types Of Stainless Steel 304 Pipes
Stainless Steel 304 Erw Pipe
Stainless Steel 304 Erw Pipe
SS 304 Efw Pipe
SS 304 Efw Pipes
Grade 304 Square Pipe
Grade 304 Square Pipes
Astm A213 Tp304 Pipe
Astm A213 Tp304 Pipe
Aisi 304 Pipe
Aisi 304 Pipe
Astm A312 Tp 304 Seamless Pipe
Astm A312 Tp 304 Seamless Pipes
Asme Sa312 Grade 304 Pipe
Asme Sa312 Grade 304 Pipe
Uns S30400 Pipe
Uns S30400 Pipes


SS 304 Seamless Pipes Size Chart In Mm

Stainless Steel 304 seamless Pipes

Size: 1/8" To 30″NB Inch


Chemical Material Composition of Astm a312 tp 304 seamless pipes
Grade C Mn Si P S Cr Mo Ni N
304 min. 18.0 8.0
max. 0.08 2.0 0.75 0.045 0.030 20.0 10.5 0.10


Yield Strength of asme sa312 grade 304 pipes
Grade Elongation (% in 50mm) minimum Strength of Yield 0.2% Proof (MPa) minimum Strength of Tensile (MPa) minimum   Pipes Hardness
Rockwell B (HR B) maximum Brinell (HB) maximum
304 40 205 515   92 201


Equivalent material of stainless steel 304 erw pipes
Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304 S30400 304S31 58E 1.4301 X5CrNi18-10 2332 SUS 304


Is Stainless steel 304 seamless pipe is suitable for the exhaust line?

The stainless steel 304 is a chromium nickel alloy that has 18% chromium and 8% nickel in its composition. The material has some extent of general corrosion resistance and has good strength. The operating temperature range can be up to 899 degrees Celsius without scaling for continuous operation. The exhaust lines work under temperatures ranging from 300 degrees Celsius to 1200 degrees. Although it seems like the 304 material can be used for some of the exhaust pipes, the major problem is the oxidation of the pipes at a high temperature. The 304 pipes are not oxidation resistant and can immediately be oxidized under high temperatures. So the 304 seamless pipes can be used for exhaust pipes but oxidation is expected.