ASTM A269 TP316L 1.4404 Stainless Steel Seamless Coil Tube For Gas Industry

The ASTM A269 TP316L Seamless Coil Tube is a continuous-length, hollow section of stainless steel manufactured without a welded seam, wound into a coil for efficient storage, transport, and processing.Stainless steel 316L seamless coil tubes are widely used for oil & gas plant, automotive, aerospace, heat exchangers, condensers, food processing plant, instruments production, medical devices, etc. YUHONG GROUP has manufactured stainless steel tubes for more than 35 years. Our stainless steel tubes can be in welded type or seamless type, and can also be coiled or straightened.

Regular Sizes:

• Outside Diameter (OD): Commonly ranges from 1/8" (3.18 mm) to 1/2" (12.7 mm).
• Wall Thickness: Common walls range from 0.020" (0.51 mm) to 0.083" (2.11 mm). Thinner walls are more common for coiling.
• Length: The length can vary from 150 meters to over 600 meters or more in a single, continuous coil.

Key Features & Advantages:

• Excellent Corrosion Resistance: TP316L offers superior corrosion resistance compared to 304/L grades, thanks to the addition of Molybdenum (2-3%). This provides enhanced resistance to pitting and crevice corrosion from chlorides and various acids, making it ideal for harsh chemical and marine environments.
• High Strength and Pressure Integrity: The seamless manufacturing process results in a homogeneous grain structure around the tube's circumference, providing uniform mechanical properties and higher pressure ratings than an equivalent welded tube.
• No Weld Seam: Eliminates the risk of weld defects, contamination, and the heat-affected zone, which is often the weakest point for corrosion attack in welded tubes.
• Formability and Bendability: In the annealed condition, 316L is ductile and can be readily bent and formed without cracking, which is essential for routing complex coil-based systems.
• Continuous Length (Coil Form): Drastically reduces the number of fittings and connections required in an assembly, lowering installation time, labor costs, and potential leak points.

Different Applications:

• Instrumentation & Process Control: For carrying gases, hydraulic fluids, and sensing signals in oil & gas fields, chemical plants, and refineries.
• Pharmaceutical & Bioprocessing: As transfer lines for high-purity water, WFI (Water for Injection), clean steam, and process fluids where sterility and cleanability are paramount.
• Food & Beverage Industry: For conveying ingredients, dairy, beer, and other consumables. Its smooth interior and corrosion resistance meet strict sanitary requirements.
• Semiconductor Manufacturing
• Heat Exchangers & Condensers: Used in coil form for shell-and-tube heat exchangers, where the seamless construction handles thermal cycling and pressure efficiently.
• Automotive & Aerospace: For hydraulic lines, fuel lines, and other critical fluid systems that require high strength and reliability in a compact, coiled form.
• Medical Devices: Used in the construction of medical equipment and devices requiring small diameter, corrosion-resistant, and reliable fluid paths.