ASTM A312-ASME SA 312 Seamless Pipe

Product Description

1. Material: These standards primarily focus on austenitic stainless steel materials, such as grades 304, 304L, 316, and 316L, which are corrosion-resistant and suitable for sanitary applications. Other stainless steel grades may also be used if they meet the specified requirements.

2. Seamless Pipe: ASTM A270/ASME SA 270 specifies seamless stainless steel pipes for sanitary applications. Seamless pipes are preferred because they have smoother surfaces and fewer opportunities for contamination compared to welded pipes.

3. Size Range: The standard covers a range of sizes for seamless sanitary tubing, typically from 1/2 inch to 8 inches in outside diameter (OD), with various wall thickness options.

4. Surface Finish: The surface finish of the pipes is crucial for sanitary applications. ASTM A270/ASME SA 270 specifies various surface finishes, including mechanical and electropolished finishes, to meet the specific needs of different industries and applications. The choice of finish depends on factors like hygiene and cleanability requirements.

5. Tolerances: The standards define dimensional tolerances for OD, wall thickness, and length to ensure consistency and quality of the pipes.

6. Testing and Certification: ASTM A270/ASME SA 270 requires rigorous testing to ensure the quality of the pipes. Common tests include visual inspection, mechanical properties testing, non-destructive testing, and surface finish assessment. The pipes may also be subjected to additional tests, as specified by the purchaser.

7. Application: These seamless pipes are primarily used in industries where hygiene, cleanliness, and corrosion resistance are critical, such as food processing, dairy, pharmaceuticals, and biotechnology. They are suitable for conveying various fluids and gases in a sterile environment.