Carbon Steel Fittings – Strong, Reliable, and Made to Last | Solitaire Fittings
Welcome to Solitaire Fittings, your trusted Carbon Steel Fitting Supplier. We offer a wide range of Carbon Steel Fittings that are strong, durable, and perfect for many types of industries. Whether you need CS Fittings for plumbing, oil and gas, or power plants, we have the right solutions for you.
What Are Carbon Steel Fittings?
Carbon Steel Fittings are parts used to connect pipes together in a system. They help control the direction, flow, and pressure of liquids or gases. These fittings are made from carbon steel, which is a mix of iron and carbon. Carbon steel is well-known for being tough and long-lasting.
There are different types of CS Fittings, including:
- Carbon Steel Pipe Fittings
- Carbon Steel Buttweld Fittings
- Carbon Steel Forged Fittings
- CS Seamless Butt Weld Fittings
- Carbon Steel Welded Pipe Fittings
- CS Butt Weld Pipe Fittings
At Solitaire Fittings, we manufacture and supply all these types of carbon steel fittings with top quality and precision.
Types of CS Fittings We Offer
1. Carbon Steel Buttweld Fittings
These fittings are welded directly onto the pipe. They are great for high-pressure systems and give a smooth flow inside the pipe. Our range includes:
- Elbows (90°, 45°)
- Tees (Equal & Reducing)
- Reducers (Concentric & Eccentric)
- Caps
- Crosses
We offer CS Butt Weld Pipe Fittings in different sizes and schedules (pipe thickness levels) to fit your project.
2. Carbon Steel Forged Fittings
Forged fittings are made by shaping the metal under high pressure. They are very strong and used in high-pressure and high-temperature systems.
Types of CS Forged Fittings include:
- Socket Weld Fittings
- Threaded Fittings
- Couplings
- Unions
- Bushings
- Plugs
3. CS Seamless Butt Weld Fittings
These fittings are made without any seams or joints, which gives them extra strength and leak-proof performance. They are used where safety is the top priority.
4. Carbon Steel Welded Pipe Fittings
These fittings are made by welding steel plates or coils. They are cost-effective and perfect for lower-pressure systems.
Advantages of Using CS Fittings
Still wondering why you should go for CS Buttweld Fittings or CS Welded Pipe Fittings? Here are the key benefits:
1. High Strength: Carbon steel is incredibly tough, making it suitable for heavy-duty applications.
2. Cost-Effective: Compared to stainless steel, CS fittings are more affordable while offering great performance.
3. Easy to Install: With proper tools and guidance, these fittings are easy to connect, weld, and maintain.
4. Excellent Temperature and Pressure Resistance: They can handle extreme conditions without failing, which is why they’re widely used in critical systems.
Schedule and Size Chart for CS Fittings
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Schedule 10 (mm) | Schedule 40 (mm) | Schedule 80 (mm) |
| 1/2″ | 21.3 mm | 1.65 | 2.77 | 3.73 |
| 1″ | 33.4 mm | 2.77 | 3.38 | 4.55 |
| 2″ | 60.3 mm | 2.77 | 3.91 | 5.54 |
| 4″ | 114.3 mm | 3.05 | 6.02 | 8.56 |
| 6″ | 168.3 mm | 3.4 | 7.11 | 10.97 |
| 8″ | 219.1 mm | 3.76 | 8.18 | 12.7 |
| 10″ | 273.1 mm | 4.19 | 9.27 | 15.09 |
| 12″ | 323.9 mm | 4.57 | 9.53 | 17.48 |
Specifications Chart for CS Pipe Fittings
| Product Type | Specification/Standard | Common Grade |
| Buttweld Fittings | ASME B16.9, ASTM A234 | WPB, WPC |
| Forged Fittings (Socket/Threaded) | ASME B16.11, ASTM A105 | A105, A105N |
| Pipe | ASTM A106 / A53, API 5L | Grade B, X42, X52 |
| Seamless Butt Weld Fittings | ASTM A234 / ASME B16.9 | WPB (Seamless) |
| Welded Pipe Fittings | ASTM A234 / ASME B16.9 | WPB (Welded) |
Mechanical Properties Chart for CS ASTM A234 WPB Fittings
| Property | Value |
| Tensile Strength (min) | 485 MPa (70,000 psi) |
| Yield Strength (min) | 240 MPa (35,000 psi) |
| Elongation (%) | 20% min (in 50 mm length) |
| Hardness (max) | 197 HBW or 90 HRB |
CS Forged Fittings Chemical Composition Chart
| Element | Minimum (%) | Maximum (%) |
| Carbon (C) | — | 0.30 |
| Manganese (Mn) | 0.29 | 1.06 |
| Phosphorus (P) | — | 0.05 |
| Sulfur (S) | — | 0.05 |
| Silicon (Si) | 0.10 | 0.35 |
| Chromium (Cr) | — | 0.40 |
| Molybdenum (Mo) | — | 0.15 |
| Nickel (Ni) | — | 0.40 |
| Copper (Cu) | — | 0.40 |
| Vanadium (V) | — | 0.08 |
Physical Properties Chart for Carbon Steel
| Property | Value |
| Density | 7.85 g/cm³ (7850 kg/m³) |
| Melting Point | ~1425–1540 °C (2600–2800 °F) |
| Thermal Conductivity | 54 W/m·K |
| Electrical Conductivity | 6.99 × 10⁶ S/m |
| Specific Heat Capacity | 486 J/kg·K |
| Modulus of Elasticity | 200 GPa |
| Poisson’s Ratio | 0.27–0.30 |
Applications of CS Fittings
CS Fittings are used across many industries because of their strength and versatility. Here are some common applications:
- Oil & Gas Pipelines – Safe and reliable flow of oil and natural gas
- Power Plants – Handles high pressure and heat without damage
- Water Supply Systems – Used in both residential and industrial plumbing
- Chemical Industry – Withstands harsh chemicals and extreme environments
- Firefighting Systems – Strong enough to manage emergency water flows
Why Choose CS Fittings?
1. Strong and Durable: Carbon steel is one of the strongest materials used in piping systems. It can handle high pressure, extreme temperatures, and heavy-duty tasks.
2. Affordable and Cost-Effective: Compared to other metals like stainless steel or copper, CS fittings are more budget-friendly. This makes them perfect for large projects that require a lot of material.
3. Versatile: From water lines to oil pipelines, CS Fittings work well in many industries like:
- Oil & Gas
- Chemical Plants
- Power Generation
- Construction
- Water Treatment
4. Easy to Use and Install: Our Carbon Steel Pipe Fittings are designed to be easy to install. Whether you’re welding or threading, you can get the job done fast and safely.
