Carbon Steel Fitting
C arbon Steels are an iron-carbon alloy known for its good formability and weldability properties. The products have optimum performance, robust construction, precise design, durability, and high-grade materials.
Specifications
| Type of Fitting | Material | Grades | Thickness Range | Width Range | Length Range | Tensile Strength | Yield Strength | Applications | Standards |
|---|---|---|---|---|---|---|---|---|---|
| Forged Fitting | Carbon Steel | ASTM A105, A350 LF2 | 6 mm to 150 mm | 1500 mm to 3500 mm | 3000 mm to 12000 mm | 380-620 MPa (varies by grade) | 205-450 MPa (varies by grade) | High-pressure piping systems | ASME B16.11 |
| Threaded Fitting | Carbon Steel | ASTM A105, A350 LF2 | 6 mm to 150 mm | 1500 mm to 3500 mm | 3000 mm to 12000 mm | 380-620 MPa (varies by grade) | 205-450 MPa (varies by grade) | Low-temperature applications | ASME B16.11 |
| Socket Weld Fitting | Carbon Steel | ASTM A234 WPB | 6 mm to 150 mm | 1500 mm to 3500 mm | 3000 mm to 12000 mm | 380-620 MPa (varies by grade) | 205-450 MPa (varies by grade) | Moderate and high-temperature service | ASME B16.9 |
| Buttweld Fitting | Carbon Steel | ASTM A420 WPL6 | 6 mm to 150 mm | 1500 mm to 3500 mm | 3000 mm to 12000 mm | 380-620 MPa (varies by grade) | 205-450 MPa (varies by grade) | Low-temperature service | ASME B16.9 |
Manufacturing Process
The manufacturing process of carbon steel fittings involves several critical steps to ensure quality and durability. Initially, raw materials such as carbon steel are cut and shaped into billets or rods. These are then subjected to forging or forming processes, depending on the desired type of fitting. For forged fittings, the metal is heated and hammered into the required shape, enhancing its strength and grain structure. For buttweld fittings, the process includes cutting, beveling, and welding steel pipes to achieve the desired dimensions. Heat treatment processes like annealing or normalizing are applied to improve the material's mechanical properties. Precision machining follows to meet dimensional tolerances, while surface finishing ensures smoothness and corrosion resistance. Finally, thorough quality inspections are conducted to verify compliance with industry standards before the fittings are ready for use in various applications.
Key Features and Requirements of Presure Vessel Steel Plate
Forged Fittings- Superior mechanical strength and durability.
- Ideal for high-pressure environments.
- Compact and robust design.
Threaded Fittings
- Easy installation with threads.
- Reusable and dismantlable.
- Ensures tight and leak-proof connection.
Socket Weld Fittings
- Strengthened connection with welding.
- Excellent sealing properties.
- Compact design for small-diameter systems.
Buttweld Fittings
- Smooth interior surface for fluid/gas flow.
- Available in varied shapes (elbows, tees, reducers).
- Welded joints ensure high strength.
Applications
Applications for Forged Fittings- Widely used in high-pressure piping systems such as oil and gas pipelines.
- Suitable for chemical processing plants that require robust and durable fittings.
- Utilized in power generation plants, especially in steam and water systems.
Applications for Threaded Fittings
- Ideal for plumbing systems and water supply lines in residential and commercial setups.
- Frequently used in low-pressure applications in industries like construction and agriculture.
- Found in non-critical processes where fittings may require frequent disassembly or reassembly.
Applications for Socket Weld Fittings
- Commonly found in pipelines handling high-pressure fluids and gases.
- Used in refineries and petrochemical plants where leak-proof connections are essential.
- Suited for small-diameter pipelines requiring a strong and permanent connection.
Applications for Buttweld Fittings
- Critical for process piping systems in industries like petrochemicals, power generation, and shipbuilding.
- Used in boilers, heat exchangers, and storage tanks where seamless connections are essential.
- Ideal for transporting corrosive or high-temperature fluids due to their excellent strength and reliability.
Chemical Composition of Copper Fasteners
| Type of Fitting | Element | Composition (%) |
|---|---|---|
| Forged Fitting | Carbon (C) | Max 0.35 |
| Manganese (Mn) | 0.60 - 1.05 | |
| Phosphorus (P) | Max 0.035 | |
| Sulfur (S) | Max 0.040 | |
| Silicon (Si) | 0.10 - 0.35 | |
| Other Elements (Cu, Ni, Cr, Mo, V) | Max 1.00 (combined) | |
| Threaded Fitting | Carbon (C) | Max 0.35 |
| Manganese (Mn) | 0.60 - 1.05 | |
| Phosphorus (P) | Max 0.035 | |
| Sulfur (S) | Max 0.040 | |
| Silicon (Si) | 0.10 - 0.35 | |
| Other Elements (Cu, Ni, Cr, Mo, V) | Max 1.00 (combined) | |
| Socket Weld Fitting | Carbon (C) | Max 0.35 |
| Manganese (Mn) | 0.60 - 1.05 | |
| Phosphorus (P) | Max 0.035 | |
| Sulfur (S) | Max 0.040 | |
| Silicon (Si) | 0.10 - 0.35 | |
| Other Elements (Cu, Ni, Cr, Mo, V) | Max 1.00 (combined) | |
| Buttweld Fitting | Carbon (C) | Max 0.30 |
| Manganese (Mn) | 0.50 - 1.20 | |
| Phosphorus (P) | Max 0.035 | |
| Sulfur (S) | Max 0.040 | |
| Silicon (Si) | 0.10 - 0.35 | |
| Other Elements (Cu, Ni, Cr, Mo, V) | Max 1.00 (combined) |
Standard : ASTM A234 / ASME SA234
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : 1/8” NB TO 48” NB.
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Type : Seamless / Welded / Fabricated
Bending Radius :R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Weight Chart of Carbon Steel Buttweld Fittings
|
NPS (Normal Size Of Steel Pipe) |
10S Sche |
40S Sche |
80S Sche |
||||||
|
ASME B16.9 Butt weld 90 Deg Elbow |
ASME B16.9 Butt weld 45 Deg Elbow | ASME B16.9 Butt weld Equal Tee |
ASME B16.9 Butt weld 90 Deg Elbows |
ASME B16.9 Butt weld 45 Deg Elbows |
ASME B16.9 Butt weld Equal Tee |
ASME B16.9 Butt weld 90 Deg Elbow | ASME B16.9 Butt weld 45 Deg Elbow |
ASME B16.9 Butt weld Equal Tee |
|
|
8 |
0.02 |
0.01 |
0.03 |
0.03 |
0.02 |
0.06 |
0.04 |
0.03 |
0.07 |
|
10 |
0.03 |
0.02 |
0.05 |
0.03 |
0.02 |
0.03 |
0.06 |
0.04 |
0.09 |
|
15 |
0.06 |
0.03 |
0.09 |
0.08 |
0.04 |
0.10 |
0.10 |
0.05 |
0.14 |
|
20 |
0.07 |
0.03 |
0.13 |
0.08 |
0.04 |
0.17 |
0.11 |
0.05 |
0.20 |
|
25 |
0.14 |
0.08 |
0.28 |
0.15 |
0.11 |
0.29 |
0.22 |
0.14 |
0.38 |
|
32 |
0.23 |
0.11 |
0.49 |
0.26 |
0.17 |
0.59 |
0.40 |
0.23 |
0.68 |
|
40 |
0.30 |
0.17 |
0.68 |
0.40 |
0.23 |
0.86 |
0.51 |
0.29 |
1.02 |
|
50 |
0.50 |
0.25 |
0.85 |
0.70 |
0.4 |
1.28 |
0.91 |
0.59 |
1.59 |
|
65 |
0.85 |
0.48 |
1.41 |
1.40 |
0.77 |
2.19 |
1.81 |
0.99 |
3.13 |
|
80 |
1.25 |
0.63 |
1.77 |
2.20 |
1.08 |
3.31 |
2.97 |
1.50 |
4.45 |
|
90 |
1.70 |
0.75 |
2.67 |
2.83 |
1.42 |
4.08 |
4.00 |
2.00 |
5.44 |
|
100 |
2.10 |
1.08 |
3.46 |
4.47 |
2.09 |
5.27 |
6.18 |
2.81 |
7.71 |
|
150 |
5.45 |
2.72 |
8.07 |
10.89 |
5.44 |
10.99 |
16.32 |
8.16 |
13.61 |
|
200 |
10.20 |
5.33 |
15.65 |
21.54 |
10.77 |
20.91 |
33.11 |
16.56 |
28.12 |
|
250 |
18.15 |
9.75 |
26.46 |
38.56 |
19.27 |
35.38 |
51.71 |
25.86 |
49.90 |
|
300 |
25.80 |
13.62 |
39.46 |
59.42 |
29.71 |
62.14 |
79.38 |
39.69 |
83.91 |
Carbon Steel Pipe Fittings Dimension
| Normal Pipe Size For (NPS) | Outside Daimeter For (O.D.) | Buttweld 90 Deg Elbow | Buttweld 45 Deg Elbow | Buttweld Return 180 Deg Elbow | ||||
|---|---|---|---|---|---|---|---|---|
| (In Inches) | Buttweld LR Elbow | Buttweld SR Elbow | Buttweld LR Elbow | Buttweld LR Elbow | ||||
| (MM/ millimeter) | (Inches/ inch.) | Center to Face (In Inch) |
Center to Face (In Inch) |
Center to Face (In Inch) |
Radius (In Inch) |
Center to Center (In Inch) |
Back to face (In Inch) |
|
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
Carbon Steel A234 WPB Pipe Fitting
ASTM A234 has high-pressure ratings, better strength, long durability, and good corrosive resistance. In which they have the following class level in CL1, CL2, and CL3 and has following grades such as WP1, WP5, WP11, WP12, and WP 23.There are many types of ASTM A234 WPB Pipe Fittings available which is used in many industries such as, Long and short radius elbow, 2D and 3D elbow, 5d and 10D elbow, equal cross, unequal cross, reducing nipple, reducers, caps, butt tee fittings, bend, pipe nipples, pipe elbow, etc. These are used in many industries for their excellent performance in many applications. Some of them are the Petroleum industry, Power plant, Oil & Gas industry, Fertilizer, Electronics, Chemical Industry, Modern Architecture, Fabrication Industry, and Plumbing.
ASTM A234 WPB Carbon Steel Pipe Fittings
Standard : ASTM A234 / ASME SA234
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : 1/8” NB TO 48” NB.
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Type : Seamless / Welded / Fabricated
Bending Radius :R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Carbon Steel WPHY 42 Pipe Fittings.
High Yield Carbon Steel WPHY 42 Butt weld Fittings today is found used in many industrial applications because of many good properties. The properties are high tensile strength, perfect dimensional accuracy, rugged construction, sturdy construction, pitting & general corrosion resistance, high toughness, long functionality, easy to machine, weld, form, etc.
ASTM A860 High Yield Carbon Steel WPHY 42 Butt weld Pipe Fittings Chemical Composition
| Grade | Mn | P | S | Si | Ni | Cr | Mo | Cu | Ti | V | Cb | Al |
| WPHY 42 | 0.20 | 1.00-1.45 | 0.03 | 0.01 | 0.15-0.40 | 0.50 | 0.30 | 0.25 | 0.35 | 0.05 | 0.10 | 0.04 |
ANSI B16.9 Carbon Steel WPHY 42 Buttweld Fittigns Mechanical Properties
| Element | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| WPHY42 | 515-690 | 415 | 28 % |
Carbon Steel A105 Forged Fittings
ASTM A105 CS Forged Fittings
Standard : ASTM A105 / ASME SA 105
Dimensions : ASME/ANSI 16.11, MSS SP-79, 83, 95, 97, BS 3799
Size : 1/8" NB to 4" NB
Type : Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)
Rating Pressure : Threaded End - 2000 /3000/ 6000 LBS. Socket-weld End - 3000 / 6000/ 9000 LBS.
ASTM A105 Carbon Steel Threaded Forged Fittings Chemical Composition
| Grade | C | Si | Mn | -P | S | Mo | Ni | Cr | Cu | V |
| A105 | 0.35 | 0.10–0.35 | 0.60–1.05 | 0.035 | 0.040 | 0.12 | 0.40 | 0.30 | 0.40 | 0.08 |