Uns S31603/1.4404 SS 316L large diameter welded pipe
Uns S31603/1.4404 SS 316L large diameter welded pipe
SS 316L Large Diameter Welded Pipe is a corrosion-resistant, low-carbon, austenitic stainless steel pipe welded from flat steel strip or plate. It offers excellent corrosion resistance and mechanical properties, making it well-suited for large-diameter applications in harsh environments such as the chemical, petrochemical, and shipbuilding industries. The "L" designation represents the low carbon content, which improves weldability by preventing sensitization and carbide precipitation, making it suitable for structural and pressure applications.
What are the specifications of 316L stainless steel pipe?
316L stainless steel pipe has a minimum tensile strength of 458 MPa and is widely used in many marine industries. These pipes have an elongation of 40% and a minimum yield strength of 170 MPa. The density of 316L stainless steel pipe is 8,000 kg/m³.
316L Welded / ERW / Large Diameter Stainless Steel Pipes
| Category | Details |
|---|---|
| Product | Stainless Steel 316L Welded / ERW / Fabricated Pipes & Tubes |
| Standard Size (NB) | 1/2" to 16" |
| ERW Type (NB) | 1/2" to 24" |
| Fabricated (EFW Type) (NB) | 6" to 100" |
| Unit Length | 6 m, 12 m, 18 m, Custom Length |
| Thickness | 0.8 mm – 30 mm |
| Surface Finish | Anodized, Brushed, Mill Finished, Solution Annealed and Pickled, Polished Grit 120–600, Mirror Polished |
| Shape | Round, Square, Rectangular |
| Specification | ASTM A584, ASTM A312, ASTM A358 Class I–V, ASTM A249, ASTM A213, ASTM A268, ASTM A269, ASTM A789, ASTM A790 |
| Type | Welded, Fabricated, ERW (Electrical Resistance Weld), LSAW Pipes |
| Material Grades | Austenitic SS: 304/304L/304H (1.4301/1.4306/1.4948); 316/316L (1.4401/1.4404); 316Ti (1.4571); 321 (1.4541); 309S (1.4833); 310S (1.4845); 317L (1.4438); 321H (1.4878); 347H (1.4550) Duplex SS: S32001, S32003, S31500, 2205 (1.4462); S32304 (1.4362); S31803, 2507 (S32750), S32760 (1.4501); S32101 (1.4162) Super Austenitic SS: 904L, S30432, S31042, 6Mo (S31254, NO8367) Nickel Base Alloys: Alloy 20 (UNS N08020), Monel 200 (UNS N02200), Monel 400 (UNS N04400), Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811), Incoloy 825 (UNS N08825), Inconel 600 (UNS N06600), 4J29, 4J36, GH3030, GH3039, C276 (UNS N10276) Martensitic SS: 410 (1.4006), 410S (1.4000), 420 (1.4021) Ferritic SS: 409 (1.4002), 430 (1.4016) |
| Applications | Decoration, Construction, Hardware, Mechanical Structure, Chemical Equipment, Pharmaceutical Equipment, Food Processing |
| Certification | EN 10204 3.1 |
| Testing | Hydro Tested, Chemical Analysis, Mechanical Testing, PMI (Positive Material Identification) |
| Inspection | Third Party Inspection, Buyer Inspection |
| Packing | Weaving Bag, Seaworthy Bundles, Wooden Case (if required) |
| Delivery Time | 1–2 Days (Stock Materials), 7–30 Days (Make-to-Order) |
| End Types | Plain Ends, Beveled Ends, Threaded Ends |
Chemical Composition of SS 316L Large Diameter Pipes (Weight %)
| Element | Content |
|---|---|
| Carbon (C) | ≤ 0.035 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.00 - 18.00 |
| Nickel (Ni) | 10.00 - 14.00 |
Mechanical Properties of SS 316L Large Diameter Pipes
| Property | Value |
|---|---|
| Brinell Hardness (HBW) | ≤ 217 |
| Rockwell Hardness (HRB) | ≤ 95 |
| Tensile Strength (MPa) | ≥ 485 |
| Yield Strength (0.2% Offset, MPa) | ≥ 170 |
| Elongation (%) | ≥ 40 |
Manufacturing Process
SS 316L large-diameter welded pipe is manufactured by rolling stainless steel strip or sheet into a tubular form and then welding the longitudinal edges.
Common welding techniques include ERW (electric resistance welding), EFW (electric fusion welding), and, for large-diameter pipes, LSAW (longitudinal submerged arc welding) or SSAW (spiral submerged arc welding). Double-sided welding is sometimes employed.
Applications for 316L stainless steel large-diameter piping
Chemical industry
Coal and nuclear power plants
Fertilizer plants
Aerospace
Food and dairy plants
Paper and paper industry
Oil and gas exploration
Desalination plants
Pharmaceutical plants
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.
