ASME SA312 TP316L cold-drawn seamless pipe is an austenitic stainless steel pipe that requires no welding and is processed at room temperature to improve strength and surface finish. Due to its molybdenum content, it offers excellent resistance to pitting and crevice corrosion in chloride environments, making it ideal for chemical processing, petrochemical, and marine applications. Cold drawing improves its dimensional and surface quality, making it suitable for pressure vessels.
316 stainless steel pipe has a minimum tensile strength of 515 MPa and a minimum yield strength of 200 MPa. Its density is as high as 8,000 kg/m³. Standard wall thicknesses for these pipes range from 0.5 mm to 6.35 mm. SS 316 seamless pipe is manufactured without fillet welds or weld seams.
ASME SA312 TP316L Seamless Pipe (Cold-Drawn) Resistant to Chloride Corrosion in Pressure Vessels
1. Pipe Dimensional Tolerances
ASME SA-999 Dimensional Tolerances
Precision cold-drawn seamless pipe conforming to ASME SA-999
Outer Diameter Tolerance: ±0.10 mm (OD ≤ 25.4 mm)
Wall Thickness Tolerance: ±10% (minimum ±0.15 mm)
Straightness: ≤1.5 mm/m
Key Features of 316L Pipe
Grade: TP316L is a low-carbon version of type 316 stainless steel, containing molybdenum for enhanced corrosion resistance.
Process: The cold-drawn seamless (CDS) manufacturing process involves drawing the pipe through a die at room temperature, which increases its strength, hardness, and surface finish.
Corrosion Resistance: The molybdenum element in the alloy provides excellent resistance to chloride corrosion, preventing pitting and crevice corrosion in harsh environments.
Weldability: Although seamless, the pipe's low carbon content makes it less susceptible to weld sensitization, a common problem with higher-carbon grades like 316, even though it is not used in welded form.
Applications of 316L Pipe
Used in water treatment, petrochemical, food processing, pharmaceutical equipment, and other industries requiring high corrosion resistance, including coastal and marine applications.
316L Pipe Advantages
Seamless: Due to its seamless design, this pipe has no welds or seams, eliminating weak points such as welds or seams and improving integrity.
Enhanced Surface Finish: The cold drawing process creates a smooth and uniform surface.
Increased Strength: Cold working increases strength and hardness.
Gnee Steel TP316L Pipe Specifications
Sizes: Available in a variety of nominal sizes, from 6NB to 1200NB, with corresponding outer diameters and wall thicknesses.
Material Standard: Conforms to ASME SA312, which covers seamless, welded, and heavily cold-worked austenitic stainless steel pipe.
Sizes: Available in a variety of diameters (such as Schedule 40) to accommodate different pressures and applications.
Gnee Steel specializes in the production and sale of a wide range of stainless steel products, including 304, 316, 321, 904, 904L, 2205 Duplex, 2205 Duplex, and 316L stainless steel. Gnee Steel's products are widely used in the kitchen, aerospace, chemical, power, automotive, and nuclear energy sectors. We also provide custom stainless steel solutions tailored to customer needs. For stainless steel pricing or custom alloy solutions, please email ru@gneesteelgroup.com for a quote.
