Grade: AISI 321, TP 321, S32168,ASTM A312
Surface Finish: 2B, Polished, No.4, No.1, No.8 Mirror, AP (Annealed & Pickled), BA (Bright & Annealed), MF,
Annealed and Pickled, Bright Annealed, Cold Drawn etc
Technique: Cold Rolled , Hot Rolled
Outside Diameter: 6mm-630mm .
Thickness: 0.3mm-35mm .
Length: Single Random, as customers’ requirement .
Edge: Plain End, Beveled End.
Marking: Standard, Grade, OD, Thickness, Length. (Or according to the customer’s request.)
Package: Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests.
Product Type: Round Seamless / Welded Pipe
Origin: China
Port: ShangHai,NingBo,FoShan
Standard: JIS, AISI, ASTM, GB,DIN, EN,SUS,etc
Payment Term: T/T , L/C
Mill: TSINGSHAN,Baosteel,XiYoo,etc
Lead Time: 7 to 25 working days after the receipt of 30% deposit .
Form: Pipe, Tube etc.
Value Added Service: Polish,Sawing Etc.
Characteristics of steel grade AISI 321 / TP 321 :
ASTM A312 - Seamless and straight-seam welded austenitic pipe intended for high temperature and general
corrosive service. Filler metal not permitted during welding
ASTM A358 - Electric fusion welded austenitic pipe for corrosive and/or high temperature service. Typically
only pipe up to 8 inch is produced to this specification. Addition of filler metal is permitted during welding
ASTM A790 - Seamless and straight-seam welded ferritic/austenitic (duplex) pipe intended for general corrosive
service, with a particular emphasis on resistance to stress corrosion cracking
ASTM A409 - Straight-seam or spiral-seam electric fusion welded large diameter austenitic light-wall pipe in
sizes 14” to 30” with walls Sch5S and Sch 10S for corrosive and/or high
ASTM A376 - Seamless austenitic pipe for high temperature applications
ASTM A813 - Single-seam, single- or double- welded austenitic pipe for high temperature and general corrosive
applications
ASTM A814 - Cold-worked welded austenitic pipe for high temperature and general corrosive service
AISI 321 steel is a high-alloy chromium-nickel steel with an austenitic structure, increased heat resistance and heat resistance.
The use of steel 321 is permissible at temperatures of 600-800℃, while products made of steel 321 remain in their original
state for a long time.
It has no obvious magnetic properties, is unstable to oxidation and is not subjected to hardening.
Chemical composition in % steel AISI 321:
C
|
Mn
|
P
|
S
|
Si
|
Cr
|
Ni
|
Ti
|
Fe
|
<0.08
|
<2.0
|
<0.045
|
<0.03
|
<1.0
|
17.0-19.0
|
9.0-12.0
|
<0.50
|
Remaining
|
Titanium in the chemical composition makes 321 steel resistant to intergranular corrosion.
Mechanical properties of material 321 :
Tensile strength (tensile strength), min., MPa
|
515
|
Yield strength, 0.2%, MPa
|
205
|
Brinell hardness, HB
|
163
|
Fatigue strength, N/mm²
|
260
|
Relative elongation, min., %
|
40
|
Closest equivalents (analogues) INOX 321 :
Germany
|
X10CrNiTi18-9
|
European (EN)
|
1.4541
|
Japan (JIS)
|
SUS 321
|
Russia (GOST)
|
12X18H10T
|
Characteristics and properties of stainless steel tube:
high plasticity and viscosity;
excellent resistance to corrosion processes, due to which the operation of rolled products with highly aggressive carriers is
allowed;
the possibility of using stainless steel pipes in a wide temperature range;
resistance to vibrations and mechanical influences;
bactericidal properties, allowing the use of products in the food industry;
long service life;
relatively light weight.
Seamless round stainless pipes, due to the absence of seams, are characterized by high consumer properties,
offering consumers valuable qualities:
when operating in main pipelines - absolute tightness of the pipe;
high resistance to corrosion;
the ability of the product to be deformed, while the mechanical properties of the surface are not violated;
long period of operation.
Stainless Steel Welded Round Tubes also have all of the above properties, but with the addition of a small cost that
makes them very popular in low cost projects such as general purpose piping systems
Application of stainless steel pipe:
The main areas of application of stainless steel pipes are the laying of hydraulic pipelines and the creation of pneumatic
machine systems, heating systems. Stainless steel pipelines can be laid both inside and outside buildings. Various types
of pipes are used to organize the supply of cold or hot water, as well as other liquids. Such pipelines do not have any effect
on the composition of the liquid and are suitable for operation in the food industry. They are indispensable in equipping
facades and interiors with stair railings. Less commonly, stainless pipes are used to strengthen and give strength to
any structures, buildings and structures, as well as in heating systems at thermal power plants.
Large-diameter pipes are used in the laying of gas and oil pipelines, the creation of water, sewer and heating networks.
The creation of industrial and engineering communications is also accompanied by the use of stainless steel pipes of large
diameter. Thick walls ensure the strength of the pipes when transporting raw materials under high pressure. The attractive
appearance of polished pipes makes them indispensable when equipping buildings with stair railings, racks and other elements.
Stainless steel pipe AISI 321
Distinguish products of special and general purpose. It is used for laying pipelines and manufacturing metal structures.
Seamless round stainless pipes are used to create some elements of heat exchange, cryogenic, capacitive and reaction
technology.
Pipes are perfect for use in the food industry, as well as the chemical industry, because. are resistant to moderately concentrated
acids and organic solvents. Pipe diameter from 6 to 630 mm, with wall thickness from 0.3 to 35 mm.
TP321 stainless steel pipes have good weldability, good thermal resistance, ductility, corrosion resistance, toughness.
Our experienced machinists, welders and technicians, modern facilities and fabrication technology enable us to provide
you with the following custom fabrication services and beyond.
Machining services:
Equipped with CNC lathes and mills, our production team can provide you with a single, customized piece, or a full
production run. We will gladly and accurately machine all types of materials to your specification.
Cutting /Sawing Services:
Whatever shape, size or density of your material, we will custom-cut to any length you require.
Custom Bending:
We provide custom bending services for Industrial and Sanitary Applications. E-mail with degree of bend
and centerline radius.
Welding:
We offer precision welding of various materials with guaranteed strength and durability.
Custom Fabrications:
We pride ourselves in meeting your custom fabrication needs. Please let us know what we can do for you.
ASTM / ASME A312 TP 321 pipe types
AISI 321 Stainless Steel Pipes
|
brush 321 Stainless Steel Pipe
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Stainless Steel Tube
|
aisi 321 material
|
astm 321 stainless steel
|
ss 321 Pipe
|
inox 321
|
grade 321 stainless
|
stainless steel suppliers
|
seamless stainless steel tube
|
welded stainless steel pipe
|
TP321 pipe
|
|