Home > Special Grade Hydraulic Fittings
Paul Tube Fittings, located in Houston, USA, is a reliable manufacturer and supplier of Special Grade Hydraulic Fittings, designed for top-notch performance in high-pressure and high-vibration hydraulic systems. These fittings are crafted from advanced materials like duplex stainless steel, Inconel, Hastelloy, Monel, and titanium, providing exceptional strength, corrosion resistance, and durability. Built to thrive in the toughest industrial settings, these fittings guarantee leak-free, secure connections in hydraulic circuits. Paul Tube Fittings offers precision-engineered components that comply with international standards, making them perfect for aerospace, marine, offshore, defense, and heavy machinery applications that demand extreme reliability and durability.
The Special Grade Hydraulic Fittings from Paul Tube Fittings are crafted using high-performance alloys such as Duplex Steel, Inconel, Monel, Hastelloy, and Titanium. These materials deliver outstanding mechanical properties, including high tensile strength (600–1000 MPa), excellent fatigue resistance, and remarkable corrosion resistance in harsh environments. Tailored for high-pressure hydraulic systems, these fittings can handle thermal stress, vibration, and chemical exposure. With precision engineering, they ensure tight tolerances and secure, leak-proof connections. These special-grade fittings are perfect for mission-critical systems where mechanical integrity, safety, and durability are crucial under extreme working conditions.
| BRAND | Paul Tube Fittings |
| DESIGN STANDARD | DIN 2353/ ISO 8434-1 |
| MATERIAL | 904L , 6MO, TITANIUM , ALUMNIUM, ALLOY 20 |
| SERIES | LL- LOW PRESSURE , L- MEDIUM PRESSURE, S- HIGH PRESSURE |
| WORKING PRESSURE | (LOW) LL SERIES – 100 BAR |
| (MEDIUM)L SERIES – 100 BAR TO 500 BAR | |
| (HEAVY)S SERIES – 200 BAR TO 800 BAR | |
| SIZE RANGE | LL SERIES – 4LL TO 12LL |
| L SERIES – 6L TO 42L | |
| S SERIES – 6S TO 38S | |
| 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 |
| ACCESSORIES | O-RING, DOWTY SEAL , COPPER WASHER , ED SEAL, CUTTING RING , NUT |
| O-RING & SEALS | NBR ( -35*C TO 100* C ) VITON (-25*C TO 200* C) , PTFE – (-60*C TO 240*) |
| SURFACE | EXPORT BRIGHT FINISH, SHORT BLASTED FINISH, ELECTROPLATED FINISH |
| C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
|---|---|---|---|---|---|---|---|---|
| 0.02 Max | 2.0 Max | 1.0 Max | 0.045 Max | 0.035 Max | 19.0 Min 23.0 Max | 4.0 Min 5.0 Max | 23.0 Min 28.0 Max | 1.0 Min 2.0 Max |
|
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness
Rockwell B (HR B) |
Hardness
Brinell (HB) |
|---|---|---|---|---|
|
490 |
220 |
36 |
70-90 typical |
150 |
At Paul Tube Fittings, we are the largest supplier, manufacturer, and exporter of Hydraulic Tube Fittings in Houston, USA. Our state-of-the-art manufacturing facilities, strategically located in the USA, enable us to deliver high-quality solutions tailored to meet your precise requirements. With an extensive inventory of over 16,000 tons of premium hydraulic materials, we are fully equipped to address your needs efficiently. Our commitment to excellence and operational efficiency ensures we consistently maintain stock availability, making us your trusted partner for Hydraulic Tube Fittings.
|
Grade |
904L |
|
|
Density
(kg/m3) |
7900 |
|
|
Elastic Modulus
(GPa) |
190 |
|
|
Mean Co-eff of Thermal Expansion (µm/m/°C) |
0-100°C |
15 |
|
0-315°C |
||
|
0-538°C |
||
|
Thermal Conductivity
(W/m.K) |
At 20°C |
11.5 |
|
At 500°C |
||
|
Specific Heat 0-100°C
(J/kg.K) |
500 |
|
|
Elec Resistivity
(nΩ.m) |
952 |
|
Paul Tube Fittings is a leading supplier and stockist of premium Hydraulic Tube Fittings in Houston, USA. Our products are widely used across various industries, known for their strength, durability, and leak-proof performance. We are dedicated to delivering exceptional service and ensuring high levels of customer satisfaction. Our advanced manufacturing and finishing techniques set us apart in the industry, enabling us to consistently provide top-quality Hydraulic Tube Fittings while effectively meeting the unique demands of our customers.
Contact us to get a quick quote for your requirement.
Special Grade Hydraulic Fittings are vital in industries that require high reliability under extreme pressure, temperature, and corrosive conditions. They find extensive use in offshore oil & gas rigs, subsea systems, aerospace equipment, chemical processing units, military vehicles, and hydraulic machinery in mining and marine sectors. These fittings create secure, high-strength connections in fluid power systems, ensuring efficient transmission of fluids and enhancing overall system performance.
Please feel free to contact us if you need any further information or for enquiry.
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