Premium ASTM312 TP304/316L/310S Seamless Tubes Corrosion Resistance for Your Projects

• Customization: Available
• Application: Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry
• Certification: CE, ISO9001
• Model NO.: Premium ASTM 312 TP304/316L/310S Seamless Tubes
• Length: 1-50m
• Material: 316 Stainless Steel
• Outer Diameter: 3.18-810mm
• Type: Seamless Pipe
• Wall Thickness: 0.2-40mm
• Steel Grade: Tp316/Tp321/Tp410/347/310/262/370
• Technique: Hot Rolled/Cold Drawn
• Shape: Round/Customized
• Process: Polished/Solution Treatment
• Condition: Hot Finished/Cold Finished
• End: Plain End/Bevel End
• Usage: Heat Transfer
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Customized
• Thickness: 1-150mm
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Size: 1/4"-4"
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 10, 000, 000 Kgs/Year

Product Description

Product Description

  

ASTM A312 TP304/316L/310S Seamless Tubes

1. Material Overview

• ASTM A312 Standard: Specifies requirements for seamless and welded austenitic stainless steel tubes for high-temperature and general corrosive service.

• Grades Covered:

  • TP304: A basic austenitic stainless steel (18% Cr, 8% Ni) with excellent corrosion resistance, formability, and weldability.

  • TP316L: A low-carbon variant of TP316 (16-18% Cr, 10-14% Ni, 2-3% Mo), offering enhanced resistance to chlorides and acidic environments.

  • TP310S: High-temperature grade (25% Cr, 20% Ni) with superior oxidation resistance and creep strength at elevated temperatures (up to 1150°C).

 

2. Key Properties

Chemical Composition (Typical %)

Element	TP304	TP316L	TP310S
Chromium	18-20	16-18	24-26
Nickel	8-10.5	10-14	19-22
Molybdenum	-	2-3	-
Carbon	≤0.08	≤0.03	≤0.08

Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
TP304	≥515	≥205	≥35
TP316L	≥485	≥170	≥35
TP310S	≥515	≥205	≥40

Corrosion & Temperature Resistance

• TP304: Resists organic acids, nitric acid, and mildly corrosive environments. Limited use in chloride-rich settings.

• TP316L: Superior pitting/crevice corrosion resistance in marine, chemical, and acidic environments due to Mo content.

• TP310S: Optimized for high-temperature oxidation (e.g., furnace parts, heat exchangers).

 

3. Manufacturing Process

• Seamless Tube Production: Hot extrusion or cold drawing followed by solution annealing (e.g., 1040-1120°C for TP304/316L) to dissolve carbides and restore corrosion resistance.

• Surface Finish: Annealed/pickled or polished surfaces per ASTM A480.

• Testing: Hydrostatic testing, eddy current (ET), or ultrasonic testing (UT) per ASTM A312 requirements.

 

4. Applications

• TP304: Food processing equipment, architectural trim, pharmaceutical tubing, and low-temperature applications.

• TP316L: Offshore platforms, chemical reactors, desalination plants, and medical devices.

• TP310S: Heat treatment furnaces, radiant tubes, boiler components, and ethylene cracking units.

 

5. Standards & Certifications

• Complies with ASME SA312 for pressure applications.

• Certifications: EN 10204-3.1/3.2, NACE MR0175 (for sour service), and PED 2014/68/EU (Category II).

 

6. Advantages

• Seamless Design: Eliminates weld weaknesses, ensuring uniform strength.

• Cost-Efficiency: TP304 is economical for general use; TP316L balances cost and performance in harsh environments.

• Customization: Available in sizes from 1/8" to 24" OD, with wall thicknesses tailored to project needs.

 

7. Limitations

• TP304/316L are unsuitable for prolonged high-temperature service (>400°C for TP304; >550°C for TP316L).

• TP310S has lower room-temperature ductility compared to TP304/316L.

 

Detailed Photos