Stainless Steel Pipe | 316L Cryogenic Tubing Solutions

Stainless Steel Pipe | 316L Cryogenic Tubing Solutions

Product Overview

Our 316L Cryogenic Tubing Solutions are engineered to deliver unmatched performance in extreme low-temperature environments, from LNG processing (-196°C/-320°F) to aerospace cryogenic fuel systems. Manufactured under ASTM A312/ASME SA213 standards, these seamless tubes combine superior corrosion resistance, thermal stability, and leak-proof integrity. Featuring electropolished surfaces (Ra ≤0.25μm) and full traceability via Mill Test Reports (MTRs), our tubing ensures compliance with ASME B31.3 and ISO 21028 standards for cryogenic applications.

Technical Specifications

For pipe schedule chart for stainless steel references or stainless steel 6 inch stove pipe retrofits, consult our technical team.

Key Attributes

1. Cryogenic Durability: Maintains ductility and impact resistance at temperatures as low as -196°C, preventing brittle fracture in LNG storage and transport.
2. Corrosion Resistance: 16-18% chromium and 2-3% molybdenum resist chloride-induced pitting in marine and chemical environments.
3. Seamless Integrity: Zero weld seams eliminate contamination risks, critical for ultra-high-purity gas and liquid transfer.
4. Customization: Tailored OD, wall thickness, and lengths (1m–12m) with pipe cutter stainless steel compatibility for precise installations.

Detailed Performance Characteristics

Tensile & Bend Strength

• Tensile Strength:
  With ≥485 MPa tensile strength, these tubes withstand high-pressure cryogenic systems (e.g., LNG pipelines) without deformation. The low carbon content (≤0.03%) minimizes carbide precipitation during welding, ensuring post-weld corrosion resistance.
• Bend Strength:
  Cold-drawn seamless tubes retain ductility under tight-radius bends (1.5x OD), critical for compact cryogenic system layouts. Use mandrel bending tools to avoid ovality and work hardening.

Identification Methods

• Laser Etching: Permanent markings include grade ("316L"), OD, thickness, heat number, and ASTM/ASME compliance per ASTM A480.
• Certification: MTRs validate chemical composition (Cr:16-18%, Ni:10-14%, Mo:2-3%) and mechanical properties for full traceability.

Weight Calculation

Use the formula:
Weight (kg/m)=1000(OD−WT)×WT×0.0248
Example: A 150mm OD tube with 8mm wall thickness weighs ~28.4 kg/m. Download our pipe schedule chart for stainless steel for bulk calculations.

Causes of Stainless Steel Rust

Despite its corrosion resistance, rust can occur under:

1. Chloride Exposure: Hypochlorite-based sanitizers or saline solutions degrade the passive chromium oxide layer, causing pitting.
2. Mechanical Damage: Scratches from improper pipe cutter stainless steel techniques expose raw metal to oxidation.
3. Galvanic Corrosion: Contact with carbon steel in electrolytic fluids accelerates degradation.
4. Improper Welding: Excessive heat input during welding causes chromium carbide precipitation. Solution: Use argon back-purging and ER316L filler wires.

Applications

• LNG Transport: Cryogenic pipelines for liquefied natural gas (-162°C).
• Aerospace: Fuel lines for liquid hydrogen/oxygen storage.
• Pharmaceutical: Ultra-clean cryogenic fluid transfer in bioreactors.
• Industrial Heating: Stainless steel 6 inch stove pipe retrofits for high-efficiency combustion systems.

Why Choose Our Stainless Steel Tubes?

1. Certified Quality: ASTM/ASME compliance with third-party inspections (ISO 9001, SGS).
2. Global Supply: Competitive pricing with 15-30 day delivery for bulk orders, including stainless steel 6 inch stove pipe configurations.
3. Technical Expertise: 24/7 guidance on pipe cutter stainless steel techniques and orbital welding protocols.
4. Sustainability: 100% recyclable with ISO 14001-certified eco-packaging.
5. Cost Efficiency: 20-30% lifecycle savings vs. carbon steel alternatives due to zero maintenance.