ASTM A312 TP 317L Seamless Pipes

ASTM A312 TP 317L Seamless Pipes

ASTM A312 TP 317L Seamless Pipes are low-carbon, molybdenum-bearing austenitic stainless steel pipes designed for enhanced corrosion resistance in highly aggressive environments. The seamless manufacturing process ensures uniform strength and excellent structural integrity.

Grade 317L offers higher molybdenum content compared to 316L, providing superior resistance to pitting and crevice corrosion, especially in chloride-rich and chemical processing environments. Its low carbon content minimizes carbide precipitation during welding.

Specifications

Standard	ASTM A312 / ASME SA312
Grade	TP 317L
Manufacturing Process	Hot Rolled / Cold Drawn Seamless
Size Range	1/8" NB to 24" NB
Wall Thickness	Schedule 5S to Schedule XXS
Length	6 Meters Standard / Custom Length
Surface Finish	Annealed & Pickled, Polished, Bright Finish
End Type	Plain End, Beveled End, Threaded

Key Benefits

• Superior Corrosion Resistance: Higher molybdenum enhances resistance to pitting and crevice corrosion.
• Excellent Chemical Resistance: Suitable for handling aggressive acids and chemicals.
• Low Carbon Content: Reduces risk of intergranular corrosion after welding.
• High Strength & Durability: Seamless structure ensures performance under pressure.
• Extended Service Life: Reliable operation in harsh industrial environments.

Chemical Composition (Typical)

Element	317L (%)
Carbon	0.03 Max
Chromium	18.0 – 20.0
Nickel	11.0 – 15.0
Molybdenum	3.0 – 4.0

Applications

• Chemical Processing Equipment
• Pulp and Paper Industry
• Oil & Gas Plants
• Marine Environments
• Pharmaceutical Manufacturing
• Pollution Control Systems

Quality Testing

• Hydrostatic Testing
• Ultrasonic Testing (UT)
• Radiographic Testing (RT)
• PMI Testing
• Dimensional Inspection

Conclusion

ASTM A312 TP 317L Seamless Pipes are engineered for demanding applications requiring superior corrosion resistance and durability. With enhanced molybdenum content and seamless construction, they provide reliable performance in highly aggressive industrial environments.