One variety of steel pipe that is produced without welding or joints is stainless steel seamless pipes. These pipes are made by forcing a seamless tube from a solid stainless steel billet via a die. These pipes are stronger, more dependable, and less likely to leak than welded pipes because they don't have any welds or joints.
In applications that call for high levels of corrosion resistance, such those in the chemical, petrochemical, and oil and gas sectors, seamless stainless steel pipes are frequently employed. Due to their ability to tolerate extremely high temperatures without deteriorating or breaking down, they are also utilised in high-temperature applications.
Standard: | ASTM, ASME, DIN, BS, EN, IS, AMS, JIS, IBR & Other International Standards. |
Dimensions: | ASTM A 312 ASME SA 312 / ASTM A 358 ASME SA 358 |
Size: | 1/8NB TO 30NB IN |
SS Pipes: | 1/2" NB - 16" NB |
ERW Pipes: | 1/2" NB - 24" NB |
EFW Pipes: | 6" NB - 100" NB |
Specialized in: | Large Diameter Size |
Schedule: | SCH 5, SCH10, SCH 20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
Type: | Seamless / ERW / Welded / Fabricated / CDW |
Form: | Round Pipes, Square Pipes, Rectangular Pipes, etc. |
Length : | Single Random, Double Random & Required Length |
End : | Plain End, Beveled End, Treaded |
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Grade | UNS # | Content % by weight | |||||||
Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Molybdenum | ||
TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18 – 20 | 8 – 11 | x |
TP304L | S30403 | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18 – 20 | 8 – 13 | x |
TP316 | S31600 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16 – 18 | 10 – 14 | 2 – 3 |
TP316L | S31603 | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16 – 18 | 10 – 14 | 2 – 3 |
Property | Value |
---|---|
Density | 7.9 to 8.05 g/cm3 |
Melting point | 1370 to 1425°C |
Thermal conductivity | 15 W/mK |
Electrical conductivity | 3.5% IACS |
Magnetic properties | Austenitic grades (e.g. 304, 316) are generally non-magnetic, while ferritic and martensitic grades can be magnetic |
Yield strength | 170 to 550 MPa |
Steel Grade | N/mm 2 MIN. Tensile Stress |
N/mm 2 MIN. Proof Stress |
% MIN. Elongation |
HRB MAX. Hardness |
SUS304 | 520 | 205 | 40 | 90 |
SUS304L | 480 | 175 | 40 | 90 |
SUS310S | 520 | 205 | 40 | 90 |
SUS316L | 480 | 175 | 40 | 90 |
SUS321 | 520 | 205 | 40 | 90 |