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Stainless Steel Pipes | TP 316ti/321 Heat-Resistant Tube Excellence

$2,000.00 SGD

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Quantity 1 - 29 tons 30 - 99 tons >= 100 tons

Thickness 1-50mm

Stainless Steel Pipes | TP 316Ti/321 Heat-Resistant Tube Excellence

Property	ASTM TP 316Ti	ASTM TP 321
Material Grade	UNS S31635	UNS S32100
Chemical Composition	16–18% Cr, 10–14% Ni, 2–3% Mo, 0.5% Ti	17–19% Cr, 9–12% Ni, 5×C%–0.7% Ti
Tensile Strength	520–750 MPa	520–750 MPa
Yield Strength	205 MPa	205 MPa
Hardness (Rockwell)	70–90 HRB	187 HBW
Temperature Resistance	Up to 860°C (continuous)	Up to 816°C (continuous)
Corrosion Resistance	Superior chloride/sulfuric acid resistance	Excellent intergranular corrosion resistance
Standard Compliance	ASTM A213, A312, EN 1.4571	ASTM A213, A312, EN 1.4541
Dimensions (OD)	6–2500 mm	6–2500 mm
Wall Thickness	0.5–150 mm	0.5–150 mm
Surface Finish	Annealed, Pickled, Polished	Annealed, Shot Blasted
Applications	Petrochemical reactors, heat exchangers, stainless steel flex pipe systems	High-temperature piping, aerospace, corrugated stainless steel pipe networks

Heat and Corrosion Resistance
- TP 316Ti: Titanium-stabilized to prevent carbide precipitation during welding, ideal for stainless steel flex pipe in acidic environments (e.g., sulfuric acid handling) and marine applications.
- TP 321: Enhanced with titanium to resist intergranular corrosion in welded components, perfect for corrugated stainless steel pipe systems in power plants and chemical processing.
Mechanical Strength
- Tensile Strength: Both grades maintain structural integrity under extreme stress. TP 316Ti excels in chloride-rich settings, while TP 321 withstands cyclic thermal loads in boilers.
- Bend Strength: TP 321’s ductility allows cold bending without cracking, ideal for complex 304 stainless steel pipe retrofit projects.
Versatility
- Compatible with stainless steel flex pipe for vibration damping in automotive exhausts and HVAC systems.
- Corrugated stainless steel pipe solutions offer flexibility for seismic-prone regions and underground gas distribution.

The weight of stainless steel pipes is calculated using:
$Weight (kg/m) = \frac{( O D - W T ) \times W T \times 0.02466}{1000}$
Where:

Example: A 304 stainless steel pipe with 50 mm OD and 3 mm wall thickness weighs 3.48 kg/m.

Laser Etching: ASTM/EN standards, heat number, and alloy grade (e.g., "TP316Ti" or "TP321").
Color Coding: Optional bands for quick identification in industrial inventory systems.

Despite their corrosion-resistant properties, rust can occur due to:

Chloride Exposure: Coastal environments or de-icing salts accelerate pitting in TP 316Ti without proper passivation.
Intergranular Corrosion: Improper welding of TP 321 without post-weld annealing leads to chromium carbide formation.
Surface Contamination: Iron particles from cutting tools or grease disrupt the passive oxide layer.
Low-Quality Alloys: Substandard titanium or molybdenum content reduces resistance to reducing acids.

TP 316Ti: Chemical reactors, offshore oil platforms, and stainless steel flex pipe for industrial exhausts.
TP 321: Aerospace fuel lines, nuclear power plant coolant systems, and corrugated stainless steel pipe for gas distribution.

Premium Material Sourcing: Strict compliance with ASTM/EN standards for 304 stainless steel pipe, corrugated stainless steel pipe, and stainless steel flex pipe systems.
Customization: Tailored dimensions, surface finishes, and certifications (ISO 9001, PED, SGS) for unique projects.
Global Performance: Proven reliability in petrochemical, aerospace, and urban infrastructure projects.
Sustainability: 100% recyclable materials with 50+ year lifespans, reducing lifecycle costs.

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