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Jassem Tube Fittings, a leading manufacturer and supplier in Doha, Qatar, offers high-quality Duplex Steel Hydraulic Fittings engineered for strength, reliability, and corrosion resistance. These fittings are designed to withstand high pressures and demanding hydraulic system conditions, ensuring secure and leak-free connections. Jassem Tube Fittings combines precision engineering, premium materials, and rigorous quality control to deliver durable and efficient products. Duplex Steel Hydraulic Fittings provide long-term performance, reduced maintenance, and operational safety, making them an ideal choice for industries where high strength and resistance to aggressive media are critical for smooth and reliable hydraulic operations.
Duplex Steel Hydraulic Fittings are manufactured from a dual-phase alloy of austenitic and ferritic stainless steel, combining chromium, nickel, and molybdenum. This composition delivers excellent corrosion resistance, especially against chloride-induced stress corrosion cracking. Mechanically, they offer high tensile and yield strength, good toughness, and superior fatigue resistance. The dual-phase structure ensures stability under high pressure, vibration, and thermal cycling, providing reliable sealing, structural integrity, and long-term durability in demanding hydraulic 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 industries requiring high-strength, corrosion-resistant components. Common applications include oil and gas facilities, petrochemical plants, offshore platforms, chemical processing units, and power generation systems. They are also suitable for marine hydraulics, heavy machinery, and industrial automation systems. These fittings ensure safe, efficient, and reliable fluid transfer, helping to maintain operational safety, reduce downtime, and improve overall system performance in critical hydraulic applications.
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