ASTM A312 TP316 Stainless Steel Welded Pipe in Stock
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If you're looking for high-quality stainless steel welded pipe that combines superior corrosion resistance, durability, and affordability, ASTM A312 TP316 stainless steel welded pipe is worth considering. Gnee offers a large inventory of TP316 welded pipe in a variety of sizes, finishes, and thicknesses for immediate delivery to meet urgent project needs in the chemical, marine, and food industries.
What is ASTM A312 TP316 welded stainless steel pipe?
ASTM A312 TP316 refers to welded austenitic stainless steel pipe produced according to ASTM A312/A312M standards. This grade is an upgrade from 304, containing 2-3% molybdenum, significantly enhancing resistance to pitting and crevice corrosion, particularly in chloride or sour environments.
It is widely used in chemical and petrochemical processing, food and beverage production, pharmaceutical and medical equipment, marine piping, heat exchangers, and condensers.
Chemical Composition (Typical Values)
| Element | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| TP316 | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
Mechanical Properties
| Property | Unit | Value |
|---|---|---|
| Tensile Strength | MPa | ≥515 |
| Yield Strength | MPa | ≥205 |
| Elongation | % | ≥40 |
| Hardness (Brinell) | HB | ≤217 |
| Density | g/cm³ | 8.0 |
| Melting Point | °C | 1375–1400 |
TP316 welded pipes exhibit excellent mechanical strength and toughness across a wide temperature range (−196°C to 800°C).
ASTM A312 TP316 stainless steel welded pipe Specification
| Specification | Details |
|---|---|
| Standard | ASTM A312 / ASME SA312 |
| Grade | TP316 / 1.4401 / UNS S31600 |
| Manufacturing Process | Welded (ERW / TIG / Plasma) |
| Size Range (Outer Diameter) | 6 mm – 1219 mm |
| Wall Thickness | 0.5 mm – 30 mm |
| Length | 6 m, 12 m, or custom cut |
| Surface Finish | Pickled (No.1), Bright Annealed (BA), Polished (180#–600#) |
| Ends | Plain End / Beveled End / Threaded |
| Testing | Hydrostatic, PMI, Eddy Current, Ultrasonic, Mechanical Test |
| Certification | ISO 9001, SGS, BV, MTC EN 10204 3.1 |
| Stock Availability | Over 800 tons in stock, ready for dispatch |
What is the difference between 316 and 316L welded pipe?
The only difference is carbon content. 316L has lower carbon, which improves corrosion resistance after welding.
Are TP316 welded pipes suitable for seawater applications?
Yes, TP316 performs well in marine and chloride-rich conditions thanks to molybdenum-enhanced corrosion resistance.
ASTM A312 TP316 vs TP316L vs TP304
| Property | TP316 | TP316L | TP304 |
|---|---|---|---|
| Carbon Content | ≤0.08% | ≤0.03% | ≤0.08% |
| Molybdenum | 2–3% | 2–3% | - |
| Corrosion Resistance | Excellent | Excellent (better after welding) | Moderate |
| Weldability | Very Good | Excellent | Excellent |
| Applications | Chemical, Marine | Welded assemblies, Pharma | General industrial use |
Why Choose Gnee as Your Supplier
Over 18 years of export experience in stainless steel pipe manufacturing
50,000 m² factory with advanced TIG and plasma welding equipment
100% PMI, hydrostatic, and ultrasonic testing before delivery
ISO 9001, SGS, BV certified quality management system
Global clients in 60+ countries, with strong performance in Asia, Europe, and the Middle East
FAQ
What surface finishes are available?
Common finishes include pickled (No.1), bright annealed (BA), and polished (180#, 240#, 400#, 600#) for decorative or sanitary applications.
What are the available sizes in stock?
Gnee stocks diameters from 6 mm to 1219 mm, with thicknesses from 0.5 mm to 30 mm, suitable for industrial and structural use.
What are the packaging and delivery terms?
Each pipe is wrapped with PVC film and waterproof paper, placed on wooden pallets, and delivered within 7–15 days.Payment terms include T/T, L/C, or Trade Assurance.
