ASTM A312 TP 304 / 304L Seamless Pipes

ASTM A312 TP 304 / 304L Seamless Pipes

ASTM A312 TP 304 / 304L Seamless Pipes are austenitic stainless steel pipes manufactured without welded joints, offering superior strength, uniform structure, and excellent corrosion resistance. These pipes are widely used in industries requiring high durability and reliability.

Grade 304 provides outstanding corrosion resistance and good mechanical properties, while 304L (low carbon version) offers improved weldability and resistance to intergranular corrosion. Their seamless construction ensures enhanced pressure handling capability and long-term performance.

Specifications

Standard	ASTM A312 / ASME SA312
Grade	TP 304 / TP 304L
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: Suitable for chemical, food, and marine environments.
• High Strength & Durability: Seamless structure ensures superior mechanical performance.
• Good Weldability (304L): Low carbon content minimizes carbide precipitation.
• Uniform Wall Thickness: Reliable performance under high pressure.
• Long Service Life: Reduced maintenance and operational costs.

Chemical Composition (Typical)

Element	304 (%)	304L (%)
Carbon	0.08 Max	0.03 Max
Chromium	18.0 – 20.0	18.0 – 20.0
Nickel	8.0 – 10.5	8.0 – 12.0

Applications

• Food Processing Equipment
• Chemical Processing Plants
• Pharmaceutical Industry
• Heat Exchangers
• Oil & Gas Industry
• Water Treatment Systems

Quality Testing

• Hydrostatic Testing
• Ultrasonic Testing (UT)
• Eddy Current Testing
• PMI Testing
• Dimensional Inspection

Conclusion

ASTM A312 TP 304 / 304L Seamless Pipes provide excellent corrosion resistance, high strength, and dependable performance across multiple industries. Their seamless construction ensures durability and safety in demanding industrial environments.