Description
TP321 Ф50mm*2mm ASME SA-213/SA-213M Stainless Steel Pipe With Good
Weldability For Food and Beverage Industry
| Product Name | TP321 stainless steel pipe |
| Model Number | 200 Series: 201, 202 |
| 300 Series: 301, 302, 303, 304, 304L, 309, 309S, 310, 316, 316L,
321, 904L |
| 400 Series: 410, 420, 430, 440 |
| Duplex stainless: 2205, 2507 |
| Type | Flat/ Corrugated/ Checkered |
| Outer Diameter | 6mm-610mm |
| Wall Thickness | 0.8mm-30mm |
| Max Length | 12000mm |
| Standard | ASTM, JIS, DIN, BS |
| Price Term | FOB, CIF, EXW, CFR |
| Package | Bundles, knitting bad or as client's requirement |
TP321 stainless steel pipe refers to a specific type of seamless or
welded pipe that is manufactured in accordance with the ASTM A312
specification and is made from grade 321 stainless steel. The A312
specification sets the standards for seamless, welded, and heavily
cold worked austenitic stainless steel pipes intended for
high-temperature and general corrosive service.
TP321 stainless steel is a stabilized austenitic stainless steel
alloy that contains titanium as a stabilizing element. This
titanium addition helps to prevent sensitization and intergranular
corrosion that can occur during welding or exposure to high
temperatures.
Manufacturing Process: A312-TP321 stainless steel pipe can be
manufactured using either a seamless or welded process. Seamless
pipes are produced by piercing a solid billet of stainless steel
and then extruding it into a seamless hollow tube, while welded
pipes are made by joining the edges of a flat strip or plate
through welding.
Chemical Composition
| Grade | UNS
Designation | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Cr (%) | Ni (%) |
| TP321 | S32100 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 |
Mechanical Properties
| Grade | UNS Designation | Tensile Strength Mpa | Yield Strength Mpa | Elongation % | Hardness |
| Brinell/Vickers | Rockwell |
| TP321 | S32100 | 75[515] | 30[205] | 35 | 192 HBW/200HV | 90 HRB |
Feature
1. Weldability: 321 stainless steel pipe has good weldability,
allowing for easy fabrication and joining. It can be welded using
common welding techniques such as TIG (tungsten inert gas) welding
and MIG (metal inert gas) welding. However, it is important to use
appropriate welding procedures to prevent sensitization and
maintain the corrosion resistance of the material.
2. Stabilization: 321 stainless steel contains titanium as a
stabilizing element, which prevents sensitization and intergranular
corrosion that can occur during welding or exposure to high
temperatures. This stabilization makes it suitable for applications
involving prolonged exposure to elevated temperatures, such as
welding, heat treatment, and high-temperature service.
3. Formability: 321 stainless steel pipe exhibits good formability,
making it easy to shape and fabricate into various sizes and
dimensions. It can be bent, formed, and machined to meet specific
project requirements.
4. Durability and Longevity: 321 stainless steel pipe is known for
its durability and longevity. It offers excellent resistance to
corrosion, high temperatures, and mechanical stress, ensuring a
reliable and long-lasting piping system. This makes it a
cost-effective choice for applications where maintenance and
replacement costs need to be minimized.
Application
1. Chemical Processing: TP321 stainless steel seamless pipe is
widely used in the chemical processing industry for transporting
corrosive fluids and chemicals. It is suitable for handling acids,
alkalis, solvents, and other aggressive substances. Its corrosion
resistance ensures the integrity and longevity of the piping
system.
2. Power Generation: TP321 stainless steel seamless pipe is
commonly used in power generation plants, including thermal power
plants and nuclear power plants. It is employed for steam lines,
piping systems, and other high-temperature applications where
resistance to corrosion and stability at elevated temperatures are
crucial.
3. Heat Exchangers: TP321 stainless steel seamless pipe is commonly
utilized in heat exchangers, which are crucial components in
various industries. Its high-temperature resistance and corrosion
resistance make it suitable for transferring heat between fluids in
demanding environments.
4. Water Treatment: TP321 stainless steel seamless pipe is suitable
for water treatment applications, including desalination,
wastewater treatment, and water distribution systems. Its corrosion
resistance ensures the longevity and reliability of the piping
infrastructure.
FAQ
Q1: What industry standards should 321 stainless steel seamless
pipe comply with?
A1: 321 stainless steel seamless pipe should comply with relevant
industry standards such as ASTM A312 or ASME SA312, which define
the requirements for seamless, welded, and heavily cold worked
austenitic stainless steel pipes.
Q2: What is the difference between 321 stainless steel seamless
pipe and 304 stainless steel seamless pipe?
A2: The main difference is the addition of titanium in 321
stainless steel, which provides stabilization against sensitization
and intergranular corrosion. 321 stainless steel offers better
high-temperature strength and corrosion resistance compared to 304
stainless steel.
Q3: How long is the delivery time?
A3: Generally it is within 10 days. If the goods is not in stock ,
according to the quantity it is within 30 days.
