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Ayhan Tube Fittings is a reputed manufacturer and supplier based in Istanbul, Turkey. Specializing in quality duplex steel hydraulic fittings. Known for exceptional strength and corrosion resistance, these fittings are designed to operate reliably in harsh environments, making them ideal for a range of industrial applications including oil, gas, petrochemical and marine applications. We offer a comprehensive range of Duplex Steel Hydraulic Fittings, ensuring superior performance and durability. Choose us for Efficient, High strength solutions that meet the demands of complex hydraulic systems.
Duplex steel hydraulic fittings are a balanced blend of chromium, nickel, molybdenum and nitrogen for excellent corrosion resistance and strength They offer impressive mechanical properties, with tensile strength of 620-800 MPa and yield strength of 450-550 MPa for high pressure cutting we are surrounded Because of their excellent quality these materials exhibit excellent resistance to pitting, crevice corrosion and stress corrosion cracking even under extreme conditions. High strength and hardness coupled with excellent weldability and cost effectiveness, make duplex steel hydraulic fittings reliable for complex industrial applications
| DESIGN STANDARD | DIN 2353/ ISO 8434-1 |
| MATERIAL | DUPLEX 2205 |
| SERIES | LL- LOW PRESSURE , L- MEDIUM PRESSURE, S- HIGH PRESSURE |
| WORKING PRESSURE | 1 BAR TO 700 BAR |
| SIZE RANGE | 6 MM TO 42 MM |
| CONNECTIONS | TUBE TO TUBE , TUBE TO MALE THREAD , TUBE TO FEMALE THREAD , TUBE TO BUTT WELD , TUBE TO SOCKET WELD , TUBE TO JIC 37* , TUBE TO 24* CONE, TUBE TO SWIVEL END , TUBE TO ADJUSTBALE STANDPIPE |
| WELD NIPPLE TO MALE THREAD , WELD NIPPLE TO FEMALE THREAD , WELD NIPPLE TO BUTT WELD , WELD NIPPLE TO SOCKET WELD , WELD NIPPLE TO 24* CONE , WELD NIPPLE TO 37* JIC , WELD NIPPLE TO SWIVEL | |
| BODY TYPE | FORGED, BAR STOCK |
| SURFACE | EXPORT BRIGHT FINISH, SHORT BLASTED FINISH, ELECTROPLATED FINISH |
ELEMENT | DUPLEX 2205 | DUPLEX 31803 |
|---|---|---|
NI | 4.50 – 6.50 | 4.50 – 6.50 |
C | 0.030 max | 0.030 max |
MN | 2.00 max | 2.00 max |
P | 0.030 max | 0.030 max |
S | 0.20 max | 0.020 max |
SI | 1.00 max | 1.00 max |
CR | 21.0 – 23.0 | 22.0 – 23.0 |
MO | 2.50 – 3.50 | 3.0 – 3.5 |
N | 0.08 – 0.20 | 0.14 – 0.20 |
FE | 63.54 min | 63.72 min |
| Grade | YS (MPa) | UTS (MPa) | % Elongation | Hardness(BHN) |
| 31803 | 450 min. | 620 min. | 25 min. | 293 max. |
| 2205 | 450 min. | 655 min. | 25 min. | 293 max. |
| Density (Kg.m-1) | 7810 |
| Magnetic Permeability | <50 |
| Young’s Modulus (N/mm2) | 190 x 10^3 |
| Specific Heat, 20°C (J.Kg-1.°K-1) | 400 |
| Specific Electrical Resistance, 20°C (µO.m) | 0.85 |
| Thermal conductivity, 20°C | 15 |
| Mean coefficient of thermal expansion | 11 x 10^-6 |
| STANDARD | WERKSTOFF NR. | UNS |
|---|---|---|
| Duplex 2205 Plate | 1.4462 / 1.4462 | UNS S31803 / UNS S32205 |
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Duplex steel hydraulic fittings are widely used in applications requiring high strength and corrosion resistance. They are ideal for offshore oil and gas applications, where high-pressure water is handled and resist seawater corrosion. In the chemical industry these fillers ensure durability when exposed to acids and strong chemicals. It is used in desalination plants, power generation and the petrochemical industry, where reliability is critical in extreme conditions. In addition, steel duplex hydraulic fittings are used in marine products, pulp and paper manufacturing, and fire suppression systems to ensure efficient, watertight connections in industrial areas a strong.
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