A312 GR 316LN

GR 316LN, Stainless Steel Pipes, Cryogenic Applications, Nitrogen-Enhanced Pipes, Corrosion-Resistant Pipes, Kwality Steelage Pipes

Kwality Steelage Pvt. Ltd., a globally recognized manufacturer, supplier, and exporter based in Mumbai, India, offers top-quality A312 GR 316LN Stainless Steel Pipes. These pipes are specifically designed to provide exceptional strength, corrosion resistance, and durability, making them ideal for applications in industries such as chemical processing, power plants, marine systems, and cryogenic environments. Their unique nitrogen-enhanced composition ensures superior resistance to intergranular corrosion and mechanical stability under extreme conditions.

Table of Contents

A312 GR 316LN

The A312 GR 316LN Stainless Steel Pipes are available in nominal bore (NB) sizes ranging from 1/8 inch to 24 inches and are manufactured in various wall thicknesses to meet schedule requirements, including SCH 10, SCH 40, SCH 80, and SCH XXS. These pipes are engineered to perform in high-pressure and low-temperature environments, with a tensile strength of 515 MPa and a minimum yield strength of 240 MPa. The addition of nitrogen in their composition enhances their strength and weldability, making them suitable for critical applications.

The chemical composition of A312 GR 316LN includes 16-18% chromium, 10-14% nickel, 2.0-3.0% molybdenum, and 0.10-0.16% nitrogen. This specific blend provides excellent resistance to pitting and crevice corrosion, especially in chloride-rich environments. The pipes are available with plain, beveled, or threaded ends, and surface finishes include polished, pickled, or annealed to cater to diverse industrial requirements.

Each A312 GR 316LN pipe undergoes rigorous quality checks, including ultrasonic, radiographic, and hydrostatic testing, to ensure compliance with ASTM A312 standards. These pipes are supplied in single random, double random, or custom lengths of up to 12 meters, providing flexibility for various industrial projects. Dimensional tolerances are strictly maintained to meet international standards, ensuring seamless integration into complex systems.

Kwality Steelage Pvt. Ltd. is dedicated to delivering superior products that meet the highest standards of quality and performance. With an extensive distribution network across Europe, the Middle East, Asia, and the Americas, the company ensures timely delivery and unmatched service. Contact us today to learn more about our A312 GR 316LN Stainless Steel Pipes and discover how they can benefit your projects.

Specification Chart for A312 GR 316LN Stainless Steel Pipes

Specification Details
Size Range 1/8 inch to 24 inch NB
Wall Thickness Range SCH 10, SCH 40, SCH 80, SCH 160, SCH XXS
Applications Cryogenic Systems, Marine Systems, Chemical Processing, Power Plants
Pipe Type Seamless, Welded
Pipe Form Round, Square, Rectangular
Material Composition 16-18% Chromium, 10-14% Nickel, 2.0-3.0% Molybdenum, 0.10-0.16% Nitrogen
End Type Plain, Beveled, Threaded
Surface Finish Polished, Annealed, Pickled
Length Options Single Random, Double Random, Custom Lengths

Dimensional Tolerances for A312 GR 316LN Stainless Steel Pipes

Tolerance Type Outside Diameter (OD) Wall Thickness (WT)
Size Tolerance ±0.25 mm As per ASTM A312

Mechanical Properties of A312 GR 316LN Pipes

Grade Yield Strength (Min) Tensile Strength (Min) Elongation (%)
316LN 240 MPa 515 MPa 40%

Chemical Composition of A312 GR 316LN Pipes

Element Maximum % Composition
Carbon (C) 0.03% max
Manganese (Mn) 2.00% max
Phosphorus (P) 0.045% max
Sulfur (S) 0.030% max
Silicon (Si) 1.00% max
Chromium (Cr) 16-18%
Nickel (Ni) 10-14%
Molybdenum (Mo) 2.0-3.0%
Nitrogen (N) 0.10-0.16%

Price Range (per Metric Ton)

Pipe Type Price Range (USD)
A312 GR 316LN Pipes $3,000 – $5,000

Welding and Heat Treatment for A312 GR 316LN Pipes

The A312 GR 316LN Stainless Steel Pipes undergo solution annealing at temperatures between 1040°C and 1120°C to enhance corrosion resistance and mechanical stability. Rapid cooling methods are employed to prevent intergranular corrosion. These pipes offer excellent weldability, making them suitable for both field and shop fabrication processes without the risk of carbide precipitation.

Differences Between A312 GR 316LN and A312 GR 316L Pipes

Feature GR 316LN GR 316L
Nitrogen Content 0.10-0.16% Not Applicable
Temperature Suitability Low and High Temperatures Moderate Temperatures
Applications Cryogenic Systems Hygienic Environments

Choose Kwality Steelage Pvt. Ltd. for premium A312 GR 316LN Stainless Steel Pipes designed to meet the highest industrial standards. Contact us now for expert guidance and tailored solutions!