ASTM A312 TP 304/304L ERW Pipes

ASTM A312 TP 304/304L ERW Pipes

ASTM A312 TP 304/304L ERW Pipes are high-quality stainless steel welded pipes manufactured for use in high-temperature and corrosive environments. These pipes are widely used in chemical processing, food processing, oil & gas, power plants, and structural applications.

Grade 304 offers excellent corrosion resistance and good mechanical strength, while 304L (low carbon version) provides improved weldability and reduced risk of carbide precipitation during welding operations.

Specifications

Standard	ASTM A312 / ASME SA312
Grades	TP 304 / TP 304L
Manufacturing Process	Electric Resistance Welded (ERW)
Size Range	1/2" NB to 24" NB
Wall Thickness	Schedule 5S to Schedule 80S
Length	6 Meters Standard / Custom Length
Surface Finish	Annealed & Pickled, Polished, Matte Finish
End Type	Plain End, Beveled End, Threaded

Key Benefits

• Excellent Corrosion Resistance: Resistant to oxidation and corrosive chemicals.
• High Strength: Suitable for moderate to high-pressure systems.
• Superior Weldability: 304L minimizes weld decay.
• Hygienic Surface: Ideal for food & pharmaceutical industries.
• Cost-Effective: Economical alternative to seamless pipes.

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

• Chemical Processing Plants
• Food & Beverage Industry
• Heat Exchangers
• Water Treatment Systems
• Structural Fabrication

Quality Testing

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

Conclusion

ASTM A312 TP 304/304L ERW Pipes provide an ideal balance of corrosion resistance, mechanical strength, and cost-efficiency, making them one of the most widely used stainless steel pipe grades across multiple industries.