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Paul Tube Fittings is a well-respected manufacturer and supplier of carbon steel hydraulic fittings located in Houston, USA. Known for their commitment to quality and reliability, they provide high-performance hydraulic solutions that cater to a variety of industries, such as oil and gas, construction, marine, and heavy machinery. Their fittings are crafted from top-notch carbon steel and adhere to international quality standards, guaranteeing leak-proof and corrosion-resistant performance. With a diverse selection of sizes, threads, and pressure ratings, Paul Tube Fittings meets the unique needs of clients both in the United States and around the globe.
When it comes to composition, carbon steel hydraulic fittings mainly consist of carbon (0.15%–0.30%), manganese, phosphorus, and sulfur, along with small amounts of other elements. These fittings boast impressive mechanical properties, including high tensile strength (usually between 415–550 MPa), good ductility, and moderate resistance to corrosion. They also exhibit remarkable toughness and fatigue strength, making them perfect for high-pressure applications. The material is easy to machine and weld, and with the right heat treatment, its mechanical performance can be further enhanced, ensuring that the fittings operate reliably in demanding hydraulic systems.
| DESIGN STANDARD | DIN 2353/ ISO 8434-1 |
| MATERIAL | CARBON STEEL, MILD STEEL, ASTMA 105, EN1A |
| 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 |
| SURFACE | CARBON STEEL -TRIVALENT ZINC PLATED , YELLOW PLATTING , BLACK PHOSPHATED, |
| TEMPERATURE | (-40* C TO 120*C) |
| APPLICATIONS & INDUSTRIES | CONSTRUCTION EQUIPMENTS , DRILLING PLATFORMS, HYDRO POWER PLANTS , MACHINE TOOLS , RAILWAY TECHNOLOGY , SHIPBUILDING , WIND TUBRINE , MOBILE HYDRAULIC EQUIPMENT , MINNING , STATIONARY HYDRAULIC EQUIPMENT, INDUSTRIAL HYDRAULICS, INJECTION MOULDING MACHINERY , ALUMINUM DIE-CASTING MACHINERY, SINTERING MACHINERY, STEEL MILLS, HYDRAULIC PRESSES, PAPER PROCESSING MOBILE HYDRAULICS, BUILDING MACHINERY, AGRICULTURAL FORESTRY, LIFTING & MATERIAL HANDLING EQUIPMENT |
| MATERIAL DESIGNATOR | ASTM 108/A105, JIS G4051 S20C, S45C,/G3201 SF440A |
Carbon, Max % | 0.026 |
Manganese, Max % | 0 |
Phosphorus, Max % | 0.04 |
Sulphur, Max % | 0.05 |
Silicon, Max % | 0.4 |
Copper, Max % | 0.20 |
|
KEY PHYSICAL PROPERTIES |
CAST
CARBON STEEL |
FORGED |
|---|---|---|
|
0.30/0.35 C Max |
A216-WCB |
A105 |
|
0.25 C Max |
A216-WCC |
|
|
LOW TEMPERATURE STEEL |
||
|
0.25/0.30 C Max |
A352-LCB |
A350-LF2 |
|
0.5 Mo |
A352-LC1 |
|
|
2.5 Ni |
A352-LC2 |
|
|
3.5 Ni |
A352-LC3 |
|
|
C-MN-Si (0.25 Max) |
A352-LCC |
A350-LF3 |
|
C-MN-Si-V (1.15~1.50 Mn) |
A350-LF6
|
|
Contact us to get a quick quote for your requirement.
These carbon steel hydraulic fittings are widely utilized in high-pressure fluid systems across various industries, including oil and gas, construction, agriculture, mining, and manufacturing. They are essential for connecting tubes, pipes, and hoses, allowing for the controlled flow of fluids in systems like hydraulic lifts, cranes, earth-moving equipment, and industrial machinery. Their outstanding strength, durability, and resistance to leakage under pressure make them ideal for tough environments. Additionally, these fittings are frequently found in refineries, offshore platforms, and power plants, thanks to their ability to perform consistently across a range of pressures and temperatures.
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