ASTM A312 TP 316 / 316L Seamless Pipes

ASTM A312 TP 316 / 316L Seamless Pipes

ASTM A312 TP 316 / 316L Seamless Pipes are molybdenum-bearing austenitic stainless steel pipes designed for superior corrosion resistance in aggressive environments. These pipes are manufactured without welded joints, ensuring uniform strength and enhanced reliability.

Grade 316 and 316L offer excellent resistance to pitting, crevice corrosion, and chloride attack, making them ideal for marine, chemical processing, and high-pressure industrial applications. 316L, with lower carbon content, provides improved weldability and reduced risk of carbide precipitation.

Specifications

Standard	ASTM A312 / ASME SA312
Grade	TP 316 / 316L
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

• Excellent Corrosion Resistance: Superior resistance to chlorides and harsh chemicals.
• Enhanced Pitting Resistance: Molybdenum improves resistance in marine environments.
• High Strength & Durability: Seamless construction ensures structural integrity under pressure.
• Improved Weldability (316L): Lower carbon content reduces intergranular corrosion.
• Long Service Life: Reliable performance in demanding industrial applications.

Chemical Composition (Typical)

Element	316 (%)	316L (%)
Carbon	0.08 Max	0.03 Max
Chromium	16.0 – 18.0	16.0 – 18.0
Nickel	10.0 – 14.0	10.0 – 14.0
Molybdenum	2.0 – 3.0	2.0 – 3.0

Applications

• Marine Equipment
• Chemical Processing Plants
• Pharmaceutical Industry
• Oil & Gas Pipelines
• Food Processing Equipment
• Water Treatment Systems

Quality Testing

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

Conclusion

ASTM A312 TP 316 / 316L Seamless Pipes are widely trusted for their exceptional corrosion resistance, strength, and durability. Their seamless structure and molybdenum content make them ideal for chloride-rich and aggressive industrial environments requiring long-term performance.