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Stainless Steel Pipes | Seamless 316ti/321 Chemical Tanks

$1,450.00 SGD

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Quantity 1 - 49 tons 50 - 999 tons >= 1000 tons

Thickness 1-50mm

Stainless Steel Pipes | Seamless 316Ti/321 Chemical Tanks

Product Overview

Stainless steel pipes and fittings are engineered for superior performance in demanding environments. Our seamless 316Ti/321 stainless steel pipes are specifically designed for chemical tanks, offering exceptional corrosion resistance, high-temperature stability, and mechanical strength. Manufactured under strict quality standards, these pipes are ideal for industries such as petrochemicals, pharmaceuticals, marine engineering, and high-temperature boilers.

Technical Specifications

Property	316Ti	321
Material Grade	UNS S31636 / EN 1.4571	UNS S32100 / EN 1.4541
Outer Diameter (OD)	4–219 mm (seamless)	4–219 mm (seamless)
Wall Thickness	0.5–20 mm	0.5–20 mm
Length	6–11 m (standard)	6–11 m (standard)
Hardness (HV)	≤200	≤220
Tensile Strength	≥520 MPa	≥520 MPa
Yield Strength	≥205 MPa	≥205 MPa
Elongation	≥35%	≥35%
Temperature Resistance	Up to 870°C (1600°F)	Up to 900°C (1652°F)
Surface Finish	Polished, Pickled, Brushed	Polished, Pickled, Brushed

Key Attributes

Corrosion Resistance
- 316Ti: Enhanced with 2–3% molybdenum and titanium (0.5%), it resists pitting and crevice corrosion in chloride-rich environments (e.g., marine, chemical plants).
- 321: Stabilized with titanium, it prevents carbide precipitation during welding, ideal for high-temperature applications.
Mechanical Strength
- Both grades exhibit high tensile and yield strength, ensuring structural integrity under extreme pressure and load.
Versatility
- Suitable for stainless steel exhaust pipe tips, heat exchangers, condensers, and sanitary systems due to smooth internal surfaces and weldability.

Manufacturing Process

Stage	Description
Material Selection	High-purity chromium (16–18%), nickel (10–14%), and titanium/molybdenum alloys
Hot/Cold Drawing	Seamless tubes formed via cold drawing for precision dimensions.
Heat Treatment	Solution annealing at 1050–1100°C to optimize corrosion resistance.
Surface Treatment	Pickling, polishing, or brushing to meet industry-specific hygiene standards
Quality Inspection	Hydrostatic testing, ultrasonic inspection, and chemical analysis compliance.

Detailed Performance Analysis

1. Tensile & Bend Strength

Tensile Strength: Both grades exceed 520 MPa, ensuring durability under high-stress conditions. The addition of titanium in 316Ti enhances creep resistance at elevated temperatures.
Bend Strength: Seamless construction allows for tight-radius bending without cracking, critical for complex piping layouts in chemical tanks.

2. Weight Calculation

Use the formula:
$Weight (kg/m) = \frac{( O D - W T ) \times W T \times 0.0248}{1000}$
Example: For a 50 mm OD pipe with 5 mm wall thickness:
$Weight = \frac{( 50 - 5 ) \times 5 \times 0.0248}{1000} = 5.58 kg/m$

3. Identification Marking

Laser Etching: ASTM/EN standards, material grade (e.g., "316Ti"), heat number, and size.
Color Coding: Optional PVC sleeves for quick identification in industrial settings.

4. Causes of Stainless Steel Rust

Chloride Exposure: Prolonged contact with seawater or de-icing salts can cause pitting.
Poor Maintenance: Residual contaminants (e.g., iron particles) accelerate oxidation. Regular cleaning with pH-neutral detergents is recommended.
Thermal Stress: Repeated heating/cooling cycles in suboptimal environments may degrade passive oxide layers.

Why Choose Our Stainless Steel Pipes?

As leading stainless steel pipe suppliers, we guarantee:

Certified Quality: Compliance with ASTM A213, A312, EN 1.4571, and ASME SA312.
Global Logistics: Strategic location near Beijing-Shanghai Expressway ensures fast delivery across China and worldwide.
Custom Solutions: Tailored thickening, bending, and threading services for unique project needs.
Eco-Friendly: 100% recyclable material with minimal environmental footprint.
Third-Party Testing: Mill Test Certificates (MTC) and EN 10204/3.1b reports provided.

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Stainless Steel Pipes | Seamless 316ti/321 Chemical Tanks