ASTM A312 is an internationally recognized specification developed by ASTM International for austenitic stainless steel piping systems. The specification covers seamless pipes, welded pipes and heavily cold-worked stainless steel pipes designed for corrosive and elevated-temperature service conditions.
ASTM A312 Pipe Specification establishes requirements for chemical composition, mechanical properties, dimensions, tolerances, heat treatment, hydrostatic testing and quality control procedures to ensure reliable industrial performance and long service life.
ASTM A312 is the standard specification for seamless, welded and heavily cold-worked austenitic stainless steel pipes intended for high-temperature and corrosive service applications. ASTM A312 Stainless Steel Pipes are widely used in oil and gas, petrochemical, chemical processing, pharmaceutical, food processing, power generation and water treatment industries due to their excellent corrosion resistance, durability and mechanical strength.
Kamal Steels is a leading supplier and exporter of ASTM A312 Stainless Steel Pipes including ASTM A312 TP304 Pipe, ASTM A312 TP304L Pipe, ASTM A312 TP316 Pipe, ASTM A312 TP316L Pipe, ASTM A312 TP321 Pipe and ASTM A312 TP310S Pipe in various sizes, schedules and wall thicknesses for industrial and engineering applications worldwide.
Specification
Details
Standard
ASTM A312 / ASME SA312
Pipe Type
Seamless, Welded, EFW
Size Range
1/8" NB to 24" NB
Schedule
SCH 5S to SCH XXS
Length
Single Random, Double Random, Cut Length
End
Plain End, Bevel End, Threaded
Popular ASTM A312 Pipe Grades
ASTM A312 TP304 Pipe
ASTM A312 TP304L Pipe
ASTM A312 TP316 Pipe
ASTM A312 TP316L Pipe
ASTM A312 TP321 Pipe
ASTM A312 TP310S Pipe
ASTM A312 TP347 Pipe
ASTM A312 TP904L Pipe
Types of ASTM A312 Stainless Steel Pipes
ASTM A312 Seamless Pipe
ASTM A312 Welded Pipe
ASTM A312 ERW Pipe
ASTM A312 EFW Pipe
ASTM A312 Heavy Cold Worked Pipe
ASTM A312 Pipe Applications
ASTM A312 Stainless Steel Pipes are widely used in industries requiring superior corrosion resistance, high-temperature performance and reliable pressure handling capability.
Oil and Gas Industry
Petrochemical Plants
Chemical Processing Industry
Refineries
Power Generation Plants
Heat Exchanger Systems
Food Processing Industry
Pharmaceutical Plants
Water Treatment Facilities
Marine and Offshore Projects
Advantages of ASTM A312 Stainless Steel Pipes
Excellent Corrosion Resistance
High Temperature Strength
Long Service Life
Superior Pressure Handling Capability
Excellent Weldability
Low Maintenance Cost
Outstanding Mechanical Properties
Suitable for Critical Industrial Applications
ASTM A312 Pipe Supplier and Exporter in India
Kamal Steels is a trusted ASTM A312 ASTM A312 Pipe Supplier India. We maintain ready stock of ASTM A312 TP304, TP304L, TP316, TP316L, TP321 and TP310S Stainless Steel Pipes for immediate dispatch. All products are supplied with Mill Test Certificates (MTC), EN 10204 3.1 certification and third-party inspection support.
We export ASTM A312 Stainless Steel Pipes to the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Singapore, Malaysia, Indonesia, Australia, South Africa and other international markets. Our commitment to quality, competitive pricing and timely delivery makes us a preferred partner for industrial projects worldwide.
ASTM A312 Chemical Composition
Grade
Carbon (%)
Chromium (%)
Nickel (%)
Molybdenum (%)
TP304
0.08 Max
18.0 - 20.0
8.0 - 11.0
-
TP304L
0.035 Max
18.0 - 20.0
8.0 - 12.0
-
TP316
0.08 Max
16.0 - 18.0
10.0 - 14.0
2.0 - 3.0
TP316L
0.035 Max
16.0 - 18.0
10.0 - 14.0
2.0 - 3.0
ASTM A312 Mechanical Properties
Grade
Tensile Strength (MPa)
Yield Strength (MPa)
Elongation (%)
TP304
515 Min
205 Min
35 Min
TP304L
485 Min
170 Min
35 Min
TP316
515 Min
205 Min
35 Min
TP316L
485 Min
170 Min
35 Min
ASTM A312 Equivalent Grades
ASTM Grade
UNS Number
Werkstoff No.
TP304
S30400
1.4301
TP304L
S30403
1.4306 / 1.4307
TP316
S31600
1.4401
TP316L
S31603
1.4404
TP321
S32100
1.4541
TP310S
S31008
1.4845
ASTM A312 Pipe Size Chart
Nominal Pipe Size (NPS)
Outside Diameter (OD)
1/2"
21.3 mm
3/4"
26.7 mm
1"
33.4 mm
2"
60.3 mm
4"
114.3 mm
6"
168.3 mm
8"
219.1 mm
12"
323.9 mm
24"
610.0 mm
ASTM A312 Pipe Schedule Chart
Available Schedules
SCH 5S
SCH 10S
SCH 20
SCH 40S
SCH 60
SCH 80S
SCH 100
SCH 120
SCH 160
XXS
Why Choose Kamal Steels?
Leading Stainless Steel Pipe Supplier in India
Ready Stock Availability
Competitive Pricing
Mill Test Certificates (MTC)
Third-Party Inspection Support
Worldwide Export Supply
Fast Delivery and Logistics Support
Technical Assistance for Industrial Projects
Frequently Asked Questions
ASTM A312 is the standard specification for seamless, welded and heavily cold-worked austenitic stainless steel pipes used in corrosive and high-temperature applications.
Common grades include TP304, TP304L, TP316, TP316L, TP321, TP347 and TP310S stainless steel pipes.
ASTM A312 pipes are widely used in oil and gas, petrochemical, power generation, pharmaceutical, food processing and water treatment industries.
TP316 contains molybdenum, which provides better corrosion resistance than TP304, especially in chloride-containing environments.
