Premium Carbon Steel Buttweld Pipe Fittings by Ratnadeep Steel & Engg. Co.
Ratnadeep Steel & Engg. Co. is a reputed manufacturer, exporter, and supplier of Carbon Steel Buttweld Pipe Fittings, offering robust and cost-effective piping solutions for industrial applications. Manufactured from high-quality carbon steel grades, these fittings are known for their excellent mechanical strength, pressure-handling capability, and long service life in demanding operating conditions.
Carbon Steel Buttweld Pipe Fittings provide superior resistance to mechanical wear and thermal stress, making them ideal for high-pressure and high-temperature piping systems. They exhibit excellent weldability, dimensional accuracy, and structural stability. Our fittings are produced with precisely prepared bevel ends to ensure leak-proof weld joints, easy installation, and efficient flow performance.
Widely used across oil and gas pipelines, refineries, petrochemical plants, power generation units, water treatment systems, and structural piping networks, our carbon steel buttweld fittings meet international quality and testing standards. Select Ratnadeep Steel & Engg. Co. for reliable carbon steel buttweld pipe fittings that deliver consistent performance, durability, and value for money.
- Carbon Steel 90 Deg Elbow
- Carbon Steel 45 Deg Elbow
- ASTM A234 WPB 180 Deg Elbow
- LTCS A420 WPL3 SR Elbow
- B16.9 Carbon Steel 90 Degree Short Radius Elbow
- Carbon Steel 45 Deg Long Radius Elbow
- ASME B16.9 Carbon Steel Equal Tee
- ASTM A860 WPHY 42 Pipe Tee
- Carbon Steel ASTM A420 WPL6 Butt weld Tee
- CS A234 WPB Reducing Tee manufacturer
- CS A860 WPHY 46 Unequal Tee
- Carbon Steel Straight Tee
- Carbon Steel ASTM A234 WPB Eccentric Reducer Supplier
- B16.9 Carbon Steel Eccentric Reducer
- ASTM A860 Eccentric Reducers
- ASTM A420 WPL6 LTCS Eccentric Reducer
- ANSI B16.9 Carbon Steel Concentric Reducer Supplier
- Carbon Steel A860 Gr. WPHY 52 Concentric Reducer
- ASTM A234 WPB Concentric Reducers
- Low Carbon Steel A420 WPL3 / WPL6 Concentric Reducer
- ANSI / ASME B16.9 Carbon Steel Long Stub End Supplier
- Carbon Steel Lap Joint Stub End
- Carbon Steel ASME SA420 WPL6 Long Stub Ends
- High Yield WPBW Long Stub End
- CS ASTM A234 WPB Long Stub End
- ASME SA234 WPB Carbon Steel Short Stub End Supplier
- Low Temperature A420 WPL6 Carbon Steel ASME B16.9 Short Stub Ends
- Carbon Steel ASTM A860 WPHY60 Short Stub End Exporter
- ASTM A234 WPB Carbon Steel Pipe Cap Supplier
- ASME B16.9 Carbon Steel End Pipe Cap
- A420 WPL6 Low Temperature Steel Pipe End Cap
- Carbon Steel Buttweld Cap
- ASTM A860 High Yield CS Cap
- Carbon Steel End Cap
- Carbon Steel Equal Cross
- ASME B16.9 Carbon Steel Buttweld Cross
- CS ASTM A234 WPB Unequal Cross
- LTCS ASTM A420 WPL6 Reducing Cross Exporter
- ASTM A860 Carbon Steel WPHY60 Cross
- ASTM A234 WPB Carbon Steel Pipe Bend Exporter
- B16.9 Carbon Steel Piggable Bend
- Carbon Steel U Bend
- A420 WPL6 Long Radius Bend
- Carbon Steel A234 WPB Buttweld Bend Supplier
CHEMICAL COMPOSITION OF CARBON STEEL BUTTWELD PIPE FITTINGS
| Grade | C | Mn | P | S | Si | Cr | Mo | Ni | Cu |
|---|---|---|---|---|---|---|---|---|---|
| ASTM A234 WPB | 0.30 max | 0.29-1.06 | 0.05 max | 0.058 max | 0.10 min | 0.40 max | 0.15 max | 0.40 max | 0.40 max |
| A420 WPL6 | 0.30 max | 0.60-1.35 | 0.035 max | 0.04 max | 0.15-0.40 | 0.30 max | 0.12 max | 0.40 max | 0.40 max |
| A860 WPHY 52 | 0.12 max | 1.60 max | 0.025 max | 0.010 max | 0.15-0.45 | 0.15 max | 0.25 max | 0.25 max | 0.35 max |
MECHANICAL PROPERTIES OF CARBON STEEL BUTTWELD PIPE FITTINGS
| Grade | Tensile (ksi) | 0.2% Yield (ksi) | Elongation % | Hardness (HRb) |
|---|---|---|---|---|
| ASTM A234 WPB | 60 min | 35 min | 22 min | 79 max |
| A420 WPL6 | 65-95 | 35 min | 22 min | – |
| A860 WPHY 52 | 75 min | 52 min | 20 min | 92 max |
| A860 WPHY 70 | 90 min | 70 min | 18 min | 100 max |
Specification of Carbon Steel Buttweld Fittings
| Specifications | ASTM A234 WPB, A420 WPL3/WPL6, A860 WPHY 42/46/52/56/60/65/70 / ASME SA234, SA420, SA860 |
|---|---|
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Size | Seamless Butt Weld Fittings: ½” to 10″ | Welded Butt Weld Fittings: ½” to 48″ |
| Schedule | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Type | Seamless / ERW / Welded / Fabricated |
| Thickness | 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc. |
CARBON STEEL BUTTWELD FITTINGS EQUIVALENT GRADES
| STANDARD | UNS | EN | DIN | JIS | GOST | BS |
|---|---|---|---|---|---|---|
| ASTM A234 WPB | K03006 | 1.0619 | St 35.8 | STS 38 | 20 | BS 3059: 360 |
| A420 WPL6 | K03009 | 1.0452 | TT St 35 N | STPT 370 | 20 | BS 3604: 360 |
| A860 WPHY 52 | K03014 | 1.8974 | StE 355.7 TM | STS 490 | 09G2S | BS 7191: 355 EM |
PHYSICAL PROPERTIES OF CARBON STEEL BUTTWELD FITTINGS
| Property | ASTM A234 WPB | A860 WPHY 52 |
|---|---|---|
| Density @ Room Temperature | 0.284 lb/in³ (7.85 g/cm³) | 0.284 lb/in³ (7.85 g/cm³) |
| Elastic/Young’s Modulus | 29.0 × 10⁶ psi (200 GPa) | 29.0 × 10⁶ psi (200 GPa) |
| Specific Heat @ 20°C (68°F) | 0.108 Btu/lb/°F (452 J·kg⁻¹·°K⁻¹) | 0.108 Btu/lb/°F (452 J·kg⁻¹·°K⁻¹) |
| Melting Point | 2600°F to 2800°F (1425°C to 1540°C) | 2600°F to 2800°F (1425°C to 1540°C) |
| Thermal Conductivity @ 20°C (68°F) | 285 Btu·in/h·ft²·°F (41.2 W·m⁻¹·°K⁻¹) | 285 Btu·in/h·ft²·°F (41.2 W·m⁻¹·°K⁻¹) |
| Electrical Resistivity @ 20°C (68°F) | 0.160 μΩ·m | 0.160 μΩ·m |
| Mean Coefficient of Thermal Expansion (20-100°C) | 6.5 × 10⁻⁶ °K⁻¹ | 6.5 × 10⁻⁶ °K⁻¹ |
| Magnetic Permeability | Ferromagnetic | Ferromagnetic |
💡 Practical Difference in Use
Use Carbon Steel Buttweld Pipe Fittings when: high strength, durability, and cost-effective performance are required for pressure and temperature-bearing piping systems. Carbon steel fittings provide excellent mechanical strength and reliable service in non-corrosive to moderately corrosive environments. → Example: oil & gas pipelines, refineries, power plants, water distribution systems, and structural piping.
Applications of Carbon Steel Buttweld Pipe Fittings
Carbon steel buttweld fittings are designed for dependable performance in industrial and infrastructure piping systems.
- Oil & Gas: Transmission pipelines and processing units.
- Power Generation: Boiler lines, steam piping, and thermal plants.
- Water & Infrastructure: Water supply and structural piping systems.
When to Choose Carbon Steel?
Carbon steel is ideal for applications requiring strength, pressure handling, and economical piping solutions.
Choose Carbon Steel when:
- High pressure and temperature resistance is required
- Cost-effective and durable piping solutions are preferred
- Weldability and structural strength are critical
- Used in non-corrosive or mildly corrosive environments
- Applied in large-scale industrial or infrastructure projects
Industries That Use Carbon Steel Buttweld Pipe Fittings
Carbon steel fittings are widely used in industries that demand strength, reliability, and economical performance.
Designed for high-pressure pipeline systems.
Uses
Crude oil pipelines, gas transmission lines, and refineries.
Why Carbon Steel?
High strength and pressure-handling capability.
Used in thermal and power plant systems.
Uses
Boiler piping, steam lines, and power plant infrastructure.
Why Carbon Steel?
Excellent mechanical strength and thermal stability.
Suitable for large-scale infrastructure projects.
Uses
Water supply pipelines and structural piping systems.
Why Carbon Steel?
Durable, economical, and easy to fabricate.
Usage Guide for Carbon Steel Buttweld Pipe Fittings
Directional flow change in high-pressure and high-temperature piping systems.
Choose Elbow when
- 45°, 90°, or 180° directional change is required
- High pressure and mechanical strength are critical
- Used in oil & gas, power plants, or refineries
- Cost-effective and durable piping is needed
Strong branch connections in industrial and utility piping systems.
Choose Tee when
- Branch or distribution lines are required
- High-pressure service conditions exist
- Used in pipelines, refineries, or power plants
- Structural strength is essential
Prevents air accumulation in horizontal piping systems.
Choose Eccentric Reducer when
- Installed on horizontal pipelines
- Used near pumps or compressors
- Flow stability is required
- Applied in oil, gas, or water pipelines
Uniform pipe size transition in vertical or pressurized systems.
Choose Concentric Reducer when
- Vertical pipe alignment is required
- Uniform flow transition is important
- Used in boilers and pressure piping
- High pressure and temperature service exists
Facilitates easy dismantling in lap joint flange assemblies.
Choose Long Stub End when
- Frequent maintenance is required
- Large-diameter piping systems are installed
- Used in oil & gas and process plants
- Strong and economical joints are needed
Compact and economical lap joint solution.
Choose Short Stub End when
- Space constraints exist
- Cost-effective flange connections are required
- Used in water, oil, or gas pipelines
- Moderate pressure service is involved
Seals pipe ends securely in industrial piping systems.
Choose Pipe Cap when
- Pipe ends need closure
- Used for pressure testing or system expansion
- Installed in pipelines or process systems
- Mechanical strength is required
Multi-directional flow distribution in heavy-duty piping networks.
Choose Cross when
- Four-way branch connections are required
- Used in oil & gas or industrial plants
- High-pressure strength is critical
- Durable welded joints are necessary
Large-radius bends for smooth flow and reduced pressure loss.
Choose Pipe Bend when
- Gradual flow direction change is required
- Pressure drop must be minimized
- Used in pipelines and power plants
- High mechanical strength is essential
Our Buttweld Pipe Fittings are manufactured using advanced processes and undergo extensive quality checks to ensure flawless weldability, durability, and long service life. Each fitting is thoroughly inspected using key NDT techniques such as radiographic testing (RT), ultrasonic testing (UT), hydrostatic testing, and visual/dimensional examination. We also perform detailed chemical composition analysis and mechanical property testing to ensure material compliance with strict industry standards.
Throughout the forming and welding stages, every buttweld fitting is monitored closely to eliminate defects such as misalignment, surface irregularities, and wall-thickness variations. This ensures perfect joint integrity and high-performance reliability in pipelines carrying high temperatures, pressures, and corrosive media. All our buttweld fittings fully comply with ASME, ASTM, MSS-SP, and related global specifications, making them a preferred choice for critical piping systems worldwide.
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