What is ASTM A312?
ASTM A312 is the ASTM standard for "austenitic stainless steel seamless and welded pipe." It specifies a series of technical specifications for this type of pipe, including dimensions, tolerances, mechanical properties, chemical composition, pressure requirements, and test methods.
ASTM A312 TP304L seamless pipe is a specific type of stainless steel pipe designed for high-temperature and corrosive environments, known for its low-carbon content, which enhances weldability and corrosion resistance compared to standard 304 stainless steel. The "ASTM A312" denotes the standard specification for austenitic stainless steel pipes, "TP304L" specifies the low-carbon grade of 304 stainless steel (often called 18/8 for its 18% chromium and 8% nickel content), and "seamless" indicates the pipe is made without a weld seam, typically through an extrusion process.
AISI 304L Pipes Specification
| Standard Specification | ASTM A312 TP304L ASME SA312 TP304L |
| Wall Thickness | 0.1 - 60 mm |
| Size | ½ to 6 inch Nominal Bore |
| Schedule Pipe Thickness Range | Schedule 60, XS, Schedule 160, Schedule 120, STD, Schedule 40, Schedule 140, Schedule 20, Schedule 80, Schedule 80, XXS, Schedule 30, Supplier in Mumbai |
| Length |
Single Random Length 5 to 7 Meter Double Random Length 10 - 12 Meter |
| Surface Finish | Polished, Bright, Annealing, Cold Finish, Pickling |
| Standard | DIN, JIS, ASTM, GB, ASME, AISI, AMS, EN, GOST |
| Types | Welded, Seamless, ERW, EFW Supplier and Manufacturer |
| Technique | Cold Rolled Hot Rolled |
| Manufacturing Shapes | Round, Box Section, Square, Rectangle |
| Manufacturing Technology | Hot Cold Formed |
ASTM A312 TP304L Stainless Steel Seamless Pipe Chemical Composition
| SS GRADE | ASTM A312 CHEMICAL COMPOSITION % MAXIMUM | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| C | MN | P | S | SI | CR | NI | MO | TI | |
| TP304L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-13.0 | --- | --- |
ASTM A312 TP304L Stainless Steel Seamless Pipe Mechanical Properties
| SS GRADE | HEAT TREATMENT | Tensile Strength, min ksi [MPa] | Yield Strength, min ksi [MPa] |
|---|---|---|---|
| TP304L | Solution | 70 [484] | 25 [170] |
304L pipe application
Trailers
Heat Exchangers
Food processing equipment
Kitchen benches, sinks, troughs, equipment and appliances
construction materials
Threaded fasteners
Chemical containers, including for transport
Automotive trim
Architectural applications
ASTM A312 TP 304L Stainless Steel Seamless Pipe Packaging
Bundle Packing
Wooden Case
Wooden Case for U Tubes
Reinforced by angle bar
