ASTM A312 TP304L Stainless Steel Pipe
ASTM A312 TP304L is a standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes. It covers nominal wall thicknesses ranging from 1/8 inch to 30 inch and is intended for high-temperature and general corrosive service.
The TP304L grade of stainless steel is a low carbon version of TP304, which is the most commonly used stainless steel grade for pipe and tubing applications. The addition of carbon in TP304L helps to minimize carbide precipitation during welding, which can lead to intergranular corrosion.
ASTM A312 TP304L stainless steel pipes are commonly used in industries such as chemical processing, food and beverage processing, pharmaceuticals, petrochemicals, and power generation. They exhibit excellent corrosion resistance, good mechanical properties, and high strength at elevated temperatures.
ASTM A312 TP304L Welded Pipe Specification
| Specification | ASTM A312 |
|---|---|
| Grades | TP304L |
| NPS | 1/8″ – 24″ |
| Schedule | Sch 5 To Sch 160 |
| Length | Max 22000 Mm |
| Ends | Plain Ends, Bevelled Ends |
| Finishing | Annealing Pickling, As Welded |
| Form | Round |
| Application | Liquid Transportation, Pressure Equipment |
ASTM A312 TP304L Chemical Composition
| C | Mn | P | S | Si | Ni | Cr | N | |
|---|---|---|---|---|---|---|---|---|
| TP304L | 0.035 | 2.00 | 0.045 | 0.030 | 1.0 | 8-13 | 18-20 | |
| 1.4307 | 0.030 | 0.80 | 0.040 | 0.015 | 1.0 | 8-10 | 17.5-19.5 | 0.11 |
ASTM A312 TP304L Mechanical Properties
| Tensile Strength(Mpa) Min | Yield Strength(Mpa) Min | Elongation(%) | Hardness (HRB) Max | |
|---|---|---|---|---|
| TP304L | 485 | 170 | 35 | 90 |
| 1.4307 | 480-680 | 180 | 35 | 90 |
ASTM A312 Stainless Steel Pipe Tolerance
| OD | Tolerance | WTH（Mm) |
|---|---|---|
| 10.3-48.3 | +0.40/-0.80 | +/-12.5%T |
| ＞48.3-114.3 | +0.80/-0.08 | |
| ＞114.3-219.1 | +1.60/-0.80 | |
| ＞219.1-457.2 | +2.40-0.80 | |
| ＞457.2-660.4 | +3.20/-0.80 | |
| ＞660.4-864 | +4.00/-0.08 | |
| ＞864-1219.2 | +4.80/-0.08 |
Testing And Inspection For ASTM A312 TP304L Stainless Steel Pipe：
Stainless Steel Pipe is a premium grade of stainless steel that is widely renowned for its exceptional durability, strength, and resistance to corrosion. To ensure that this pipe meets the most stringent quality standards, it is important to conduct rigorous testing and inspection procedures before it is approved for use in various applications.
The testing and inspection of Stainless Steel Pipe involve a range of procedures that are designed to evaluate its mechanical properties, chemical composition, and dimensional accuracy. These procedures are carried out by qualified and experienced professionals who use the latest testing equipment and methods to ensure that the pipe meets all specifications.
One of the most critical aspects of testing and inspection for TP304L Stainless Steel Pipe is ensuring that it meets the appropriate specifications for its intended application. This means that it must be tested for corrosion resistance, temperature resistance, and pressure resistance, among other things. These tests are typically carried out using specialized equipment that is designed to simulate the actual conditions that the pipe will be exposed to in its intended application.
Another important aspect of testing and inspection for ASTM A312 TP304L Stainless Steel Pipe is ensuring that it meets the required dimensional accuracy for its intended application. This means that it must be tested for its external diameter, wall thickness, and straightness, among other things. These tests ensure that the pipe meets the necessary tolerances and is suitable for use in applications requiring precision machining.
Overall, testing and inspection for ASTM A312 TP304L is an essential process that ensures the highest quality standards are met. By ensuring that the pipe meets all specifications, it can be trusted for use in critical applications where reliability and durability are of utmost importance.
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