Different Grades of Stainless Steel Tubes
                     A Quick Guide on Different 
Grades of Stainless Steel 
Tubes
Presented 
By
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 Stainless Steel Tubes have excellent corrosion resistance and 
smooth finishing characteristics. For these reasons stainless 
steel tube applications are huge in many industrial segments.
 A tube is a tubular section or hollow cylinder, usually but not 
necessarily of circular cross-section, used mainly to convey 
substances which can flow — liquids and gases (fluids), 
slurries, powders and masses of small solids.
 Grades of Stainless Steel Tubes:
◦ Stainless Steel 304 Tubes
◦ Stainless Steel 310 Tubes
◦ Stainless Steel 316 Tubes
◦ Stainless Steel 317 Tubes
◦ Stainless Steel 321 Tubes
◦ Stainless Steel 347 Tubes
◦ Stainless Steel 904L Tubes
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Stainless Steel 304 
Tubes
Stainless Steel 304 Tubes is subject to indentation and crevice 
corrosion in heat chloride environments and to fret corrosion 
cracking on top of concerning 60 Degree C. SS 304 Tubes is 
additionally employed in the beaux arts field for exterior 
accents such as water and fireplace options. 
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Stainless Steel 
310 Tubes
In comparison to carbon steel, 310 Stainless Steel Tubes are 
tougher and tend to work harden rapidly. This is combined with 
better creep properties at temperature and SS 310 Tubes is 
very tough and ductile. 310H Stainless Steel Tubes is second in 
importance to 304 Stainless Steel Tubes amongst the 
austenitic stainless steels.
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Stainless 
Steel 316 Tubes
Stainless Steel 316 Tubes is often used for equipment in the 
paper, mining, chemical, food, pharmaceutical, petroleum 
industries, etc. 316, 316L SS Tubes is a group of austenitic 
stainless steels with superior corrosion resistance to 304 
Stainless Steel Tubes. SS 316H Tubes conjointly provide stress-
to-rupture, durability and higher creep at elevated 
temperatures. 
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Stainless Steel 317 T
ubes
Stainless Steel 317 Tubes is non-magnetic in the annealed 
condition but may become slightly magnetic as a result of 
welding. 317L Stainless Steel Tubes is a molybdenum bearing, 
low carbon content "l" grade austenitic stainless steel that 
provides improved corrosion resistance over 304l stainless 
steel Tubes and 316l stainless steel Tubes.
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Stainless Steel 321 T
ubes
A limitation by means of 321 Stainless Steel Tubes is that 
titanium doesn’t transfer well all over a high temperature arc, 
thus is not suggested as a welding usable. SS 321 Tubes is 
primarily used in applications that involve continuous and 
intermittent service temperatures within the carbide 
precipitation range of 800 Degree F – 1500 Degree F.
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Stainless Steel 347 T
ubes
Stainless Steel 347 Tubes from Numax Steels includes a rather 
improved corrosion resistance over completely different alloys 
of stainless steel in powerfully oxidizing environments as a 
result of the addition of metal (niobium) and number.  Grade 
347 Tubes can't be hardened by heat treatment, solely by cold 
operating.
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Stainless Steel 904L Tu
bes
Stainless Steel 904L Tubes is a low carbon high alloy austenitic 
stainless steel which is widely used in applications where the 
corrosion properties of SS 316L and SS 317L are not adequate. 
The austenitic structure also gives these Grade 904L Tubes 
with an excellent toughness, even down to cryogenic 
temperatures.
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Get in Touch
Numax  Steels is one of the leading Stainless Steel 
Tubes manufacturer and exporter in India and 
supplies quality SS Tubes of all types worldwide. For 
further information about different types and forms of 
Tubes we offer, visit our website.
www.numaxsteels.co
m
Email:  [email protected]
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