ASTM A358 is the standard specification for electric fusion welded (EFW) austenitic chromium-nickel stainless steel pipes intended for high-temperature and corrosive service applications. ASTM A358 Stainless Steel EFW Pipes are widely used in petrochemical, chemical processing, oil and gas, power generation and industrial process piping systems where excellent corrosion resistance and weld integrity are required.
Kamal Steels is a leading supplier and exporter of ASTM A358 Stainless Steel EFW Pipes including ASTM A358 TP304 Pipe, ASTM A358 TP304L Pipe, ASTM A358 TP316 Pipe, ASTM A358 TP316L Pipe, ASTM A358 TP321 Pipe and ASTM A358 TP347 Pipe in various sizes, schedules and wall thicknesses for industrial applications worldwide.
ASTM A358 covers electric fusion welded stainless steel pipes manufactured from austenitic stainless steel plate. The specification is designed for applications involving elevated temperatures, corrosive fluids and large diameter piping systems.
Specification
Details
Standard
ASTM A358 / ASME SA358
Pipe Type
Electric Fusion Welded (EFW)
Manufacturing Method
Fusion Welded from Plate
Size Range
8" NB to 120" NB
Wall Thickness
5 mm to 50 mm
Length
Random, Double Random & Custom Length
ASTM A358 Manufacturing Process
ASTM A358 pipes are manufactured by forming stainless steel plates into cylindrical shapes and joining them through electric fusion welding. The welds are subjected to rigorous inspection, testing and heat treatment procedures to ensure compliance with specification requirements.
Plate Forming
Edge Preparation
Electric Fusion Welding
Heat Treatment
Radiographic Examination
Hydrostatic Testing
Final Inspection
ASTM A358 Pipe Classes
ASTM A358 includes several pipe classes based on welding procedures and radiographic examination requirements. Selection depends on service conditions and project specifications.
ASTM A358 Pipe Classes Table
Class
Description
Class 1
Double welded with complete radiography
Class 2
Double welded without complete radiography
Class 3
Single welded with complete radiography
Class 4
Single welded without complete radiography
Class 5
Double welded with spot radiography
Popular ASTM A358 Grades
ASTM A358 TP304 Pipe
ASTM A358 TP304L Pipe
ASTM A358 TP316 Pipe
ASTM A358 TP316L Pipe
ASTM A358 TP321 Pipe
ASTM A358 TP347 Pipe
ASTM A358 TP310S Pipe
ASTM A358 Pipe Applications
Petrochemical Plants
Oil Refineries
Power Generation Facilities
Desalination Plants
Chemical Processing Plants
Offshore Platforms
Marine Projects
Large Diameter Pipeline Systems
Water Treatment Plants
Industrial Process Plants
Advantages of ASTM A358 Pipes
Suitable for Large Diameter Applications
Excellent Corrosion Resistance
High Temperature Strength
Strong Weld Integrity
Excellent Structural Stability
Long Service Life
Reliable Pressure Handling Capability
ASTM A358 Pipe Supplier and Exporter in India
Kamal Steels is a trusted supplier and exporter of ASTM A358 EFW Stainless Steel Pipes in India. We supply ASTM A358 TP304, TP304L, TP316 and TP316L pipes with complete documentation, Mill Test Certificates and third-party inspection reports.
ASTM A358 Chemical Composition
ASTM A358 commonly includes stainless steel grades such as TP304, TP304L, TP316 and TP316L. These grades contain chromium and nickel to provide excellent corrosion resistance and high-temperature performance.
ASTM A358 Mechanical Properties
ASTM A358 pipes are manufactured to meet specified tensile strength, yield strength and elongation requirements, ensuring reliable performance under demanding industrial conditions.
ASTM A358 Pipe Size Chart
Nominal Size
Outside Diameter
8"
219.1 mm
10"
273.0 mm
12"
323.9 mm
16"
406.4 mm
20"
508.0 mm
24"
610.0 mm
36"
914.4 mm
48"
1219.2 mm
Why Choose Kamal Steels?
Trusted Stainless Steel Pipe Supplier
Ready Stock Availability
Competitive Pricing
MTC & EN 10204 3.1 Certification
Third Party Inspection Support
Worldwide Export Capability
Fast Delivery
Technical Assistance
Frequently Asked Questions
ASTM A358 is a specification for Electric Fusion Welded (EFW) austenitic stainless steel pipes intended for high-temperature, corrosive and pressure-containing applications.
ASTM A312 covers seamless and welded stainless steel pipes, whereas ASTM A358 specifically covers electric fusion welded stainless steel pipes manufactured from stainless steel plate.
EFW stands for Electric Fusion Welded. ASTM A358 pipes are produced by fusion welding stainless steel plates to create large-diameter pipes with excellent strength and corrosion resistance.
Common ASTM A358 grades include TP304, TP304L, TP316, TP316L, TP321, TP347 and TP310S stainless steel pipes for various industrial applications.
ASTM A358 pipe classes define welding and radiographic testing requirements. Class 1 pipes are fully radiographed double-welded pipes, while Class 5 pipes are double-welded pipes with spot radiographic examination.
ASTM A358 pipes are widely used in petrochemical plants, oil refineries, power generation facilities, chemical processing industries, offshore projects and water treatment systems.
ASTM A358 pipes are generally manufactured in larger diameters ranging from 8 inches to 120 inches and above, depending on project requirements and fabrication capabilities.
Yes, ASTM A358 stainless steel pipes are specifically designed for elevated-temperature applications and offer excellent oxidation resistance and mechanical strength.
