MERIH STAINLESS, located in Istanbul, Turkey, has earned a solid reputation as a reliable manufacturer and supplier of high-quality Stainless Steel U Tubes. They cater to a variety of industrial needs with precision engineering and exceptional quality. Known for their commitment to excellence, the company offers U tubes that comply with international standards for durability, corrosion resistance, and efficiency. Built to thrive in tough environments, these tubes are commonly used in industries that require effective heat transfer and fluid flow solutions. MERIH STAINLESS prioritizes innovation, customer satisfaction, and timely delivery, making them a go-to partner for dependable stainless steel tubing solutions around the globe.
Stainless Steel U Tubes are mainly made from iron, chromium, and nickel, with additional elements like molybdenum, manganese, and carbon, depending on the specific grade. This distinctive composition provides outstanding resistance to corrosion, oxidation, and chemical damage. On a mechanical level, these tubes boast high tensile strength, toughness, and the capability to endure high temperatures and pressure. Their U-shaped design significantly boosts heat transfer efficiency, ensuring they remain durable and reliable even in demanding conditions found in boilers, condensers, and heat exchangers.
| Size Range | 10 mm OD to 50.8 mm OD |
| Stainless Steel U Tube Outside Diameter | 6.00 mm to 101.60 mm |
| Wall Thickness | 0.70 mm to 8.00 mm |
| Length | up to 20 m (65.62 ft) Length & Customed Required Length |
| Stainless Steel Heat Exchanger Tube Dimenisons | ASTM, AISI, ASME/ ANSI, JIS, DIN, EN, GB, BS, SUS |
| Standard | ASTM A 213, A 268, A 269, A 789, Equivalent to ASME, EN, JIS Etc. |
| Stainless Steel U tube Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti | Fe | |
| 304 | min. | 18.0 | 8.0 | |||||||||
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||||
| 304L | min. | 18.0 | 8.0 | |||||||||
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||||
| 304H | min. | 0.04 | 18.0 | 8.0 | ||||||||
| max. | 0.010 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | |||||
| SS 310 | 0.015 max | 2 max | 0.015 max | 0.020 max | 0.015 max | 24.00 26.00 | 0.10 max | 19.00 21.00 | 54.7 min | |||
| SS 310S | 0.08 max | 2 max | 1.00 max | 0.045 max | 0.030 max | 24.00 26.00 | 0.75 max | 19.00 21.00 | 53.095 min | |||
| SS 310H | 0.04 0.10 | 2 max | 1.00 max | 0.045 max | 0.030 max | 24.00 26.00 | 19.00 21.00 | 53.885 min | ||||
| 316 | min. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316L | min. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316TI | 0.08 max | 10.00 14.00 | 2.0 max | 0.045 max | 0.030 max | 16.00 18.00 | 0.75 max | 2.00 3.00 | ||||
| 317 | 0.08 max | 2 max | 1 max | 0.045 max | 0.030 max | 18.00 20.00 | 3.00 4.00 | 57.845 min | ||||
| SS 317L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 18.00 20.00 | 3.00 4.00 | 11.00 15.00 | 57.89 min | |||
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 19.00 | 9.00 12.00 | 0.10 max | 5(C+N) 0.70 max | |||
| SS 321H | 0.04 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 19.00 | 9.00 12.00 | 0.10 max | 4(C+N) 0.70 max | |||
| 347/ 347H | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 20.00 | 9.0013.00 | |||||
| 410 | min. | 11.5 | ||||||||||
| max. | 0.15 | 1.0 | 1.00 | 0.040 | 0.030 | 13.5 | 0.75 | |||||
| 446 | min. | 23.0 | 0.10 | |||||||||
| max. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | 0.50 | 0.25 | ||||
| 904L | min. | 19.0 | 4.00 | 23.00 | 0.10 | |||||||
| max. | 0.20 | 2.00 | 1.00 | 0.045 | 0.035 | 23.0 | 5.00 | 28.00 | 0.25 | |||
| Stainless Steel U tube Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 304/ 304L | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
| 304H | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 40 % |
| 310 / 310S / 310H | 7.9 g/cm3 | 1402 °C (2555 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 40 % |
| 306/ 316H | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
| 316L | 8.0 g/cm3 | 1399 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
| 317 | 7.9 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
| 321 | 8.0 g/cm3 | 1457 °C (2650 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
| 347 | 8.0 g/cm3 | 1454 °C (2650 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
| 904L | 7.95 g/cm3 | 1350 °C (2460 °F) | Psi 71000 , MPa 490 | Psi 32000 , MPa 220 | 35 % |
Contact us to get a quick quote for your requirement.
Client satisfaction by all means forms the top priority with regard to the quality of our Stainless Steel U Tubes. In pursuit of this objective, all our products are given stringent quality assurance regime, which includes hardness tests, chemical analysis by way of spectro analysis, positive material identification (PMI), flattening tests, micro and macro tests, pitting resistance tests, flaring tests and intergranular corrosion (IGC) tests.
To maintain Stainless Steel U Tubes, regularly clean them with mild soap and water to remove dirt and grime. Avoid harsh chemicals and abrasive cleaners. Inspect for signs of corrosion or damage and address any issues promptly.
Stainless Steel U Tubes are highly resistant to corrosion due to their chromium content. However, under extreme conditions like exposure to harsh chemicals or saltwater, corrosion can still occur over time.
Yes, Stainless Steel U Tubes can be used for natural gas applications. They offer excellent corrosion resistance and durability, making them suitable for handling natural gas in various industrial systems.
These Stainless Steel U Tubes are extensively utilized in power generation plants, refineries, petrochemical industries, and chemical processing facilities due to their ability to withstand extreme thermal and pressure conditions. They are crucial components in heat exchangers, condensers, and boiler systems, facilitating efficient heat transfer and energy conservation. Additionally, these tubes find applications in shipbuilding, desalination plants, and HVAC systems, where their corrosion resistance and durability are essential. With their robust performance, Stainless Steel U Tubes are key players in boosting operational efficiency across industries that require reliable and long-lasting heat transfer solutions.
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