TP316L Stainless Steel Welded Pipe for Waste Water Treatment Plant
Overview:
EN10217-7 is a European standard that specifies the technical delivery conditions for welded stainless steel tubes for pressure purposes. The standard covers a range of grades, including 1.4401 and 1.4404, which are commonly known as 316 and 316L stainless steel.
1.4401 and 1.4404 are austenitic stainless steels with high corrosion resistance and excellent mechanical properties. They are commonly used in applications where resistance to corrosion is critical, such as in the chemical, petrochemical, and food processing industries.
The welded pipes produced in accordance with EN10217-7 1.4401/1.4404 are typically used for conveying fluids under pressure. The pipes are manufactured using a variety of welding techniques, including TIG, plasma, and laser welding. The pipes are available in a range of sizes and wall thicknesses to suit different applications.
In addition to the technical delivery conditions, EN10217-7 also specifies the testing and inspection requirements for the welded pipes. This includes non-destructive testing, such as ultrasonic testing, and visual inspection to ensure the pipes meet the required quality standards.
Specification:
| Specification | EN10217-7 |
| Grades | TP316/316L; 1.4401/1.4404 |
| Type | Straight welded pipe |
| Outer Diameter | 10.2mm to 1016mm or custom size |
| Wall Thickness | 1.0mm to 14.2mm or custom thickness |
| Length | 6 meters or custom cut lengths |
| Delivery Condition | Solution Annealed & Pickled |
| Ends | Plain End, Beveled End |
| Other Testing | Product Analysis, Eddy Current Test, Hydrostatic Test, Radiographic Test, Ultrasonic Test, Flattening Test, Hardness Test, Tensile Test etc. |
| Dimension | All Pipes are Manufactured and Inspected / Tested to the Relevant standards |
| Packing | Plywood case/Woven bag in bundle |
Chemical Composition:
| Grade | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | N |
| TP316 | S31600 | 0.08 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | / |
| TP316L | S31603 | 0.035 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | / |
| 1.4401 | / | 0.07 max | 2.00 max | 0.045 max | 0.015 max | 1.00 max | 16.5-18.5 | 10.0-13.0 | 2.00-2.50 | 0.11 max |
| 1.4404 | / | 0.03 max | 2.00 max | 0.045 max | 0.015 max | 1.00 max | 16.5-18.5 | 10.0-13.0 | 2.00-2.50 | 0.11 max |
Mechanical Properties:
| Grade | Tensile Strength, min, ksi (MPa) | Yield Strength,
min, ksi (MPa) | Elongation in 2 in.
or 50mm, min (%) |
| TP316 | 515 | 205 | 35 |
| TP316L | 485 | 170 | 35 |
| 1.4401 | 510-710 | 205 | 40 |
| 1.4404 | 490-690 | 190 | 40 |
Application:
1. Chemical Processing: The high corrosion resistance of EN10217-7 1.4401/1.4404 welded pipe makes it ideal for use in chemical processing plants where it is exposed to harsh chemicals and corrosive environments.
2. Food and Beverage Industry: The pipe is also used in the food and beverage industry due to its hygienic properties and resistance to corrosion, making it suitable for transporting food and beverages.
3. Oil and Gas Industry: EN10217-7 1.4401/1.4404 welded pipe is used in the oil and gas industry for transporting oil, gas, and other fluids. The pipe's high strength and corrosion resistance make it ideal for use in harsh environments.
4. Pharmaceutical Industry: The pipe is also used in the pharmaceutical industry due to its hygienic properties and resistance to corrosion, making it suitable for transporting pharmaceutical products.
5. Water Treatment: EN10217-7 1.4401/1.4404 welded pipe is used in water treatment plants due to its resistance to corrosion and its ability to withstand high pressure and temperature.
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