Carbon Steel Pipe Cap
Carbon Steel Pipe Cap
A Carbon Steel Pipe Cap is a pipe fitting designed to cover the open end of a pipe. Its primary function is to:
- Block the flow of liquids or gases.
- Protect the pipe ends from mechanical damage or corrosion.
- Ensure safety during pipeline maintenance or repair.
The design typically features a round or elliptical shape with a smooth surface. Carbon steel, known for its excellent mechanical properties, ensures these caps can withstand high stresses, making them reliable in demanding environments.
Types of Carbon Steep Pipe Cap
Carbon Steel Butt Weld Cap
Carbon Steel Threaded Pipe Caps
Carbon Steel Socket Weld Caps
Carbon Steel Pipe Cap Dimensions
CS End Cap Dimension Chart (in lbs)
| Inch. | MM | Height | |
|---|---|---|---|
| D | E | ||
| 1/2 | 15 | 21,34 | 25,40 |
| 3/4 | 20 | 26,67 | 31,75 |
| 25 | 33,40 | 38,10 | |
| 1 1/4 | 32 | 42,16 | 38,10 |
| 1 1/2 | 40 | 48,26 | 38,10 |
| 2 | 50 | 60,32 | 38,10 |
| 2 1/2 | 65 | 73,02 | 38,10 |
| 3 | 80 | 88,90 | 50,80 |
| 3 1/2 | 90 | 101,60 | 63,50 |
| 4 | 100 | 114,30 | 63,50 |
| 5 | 125 | 141,30 | 76,20 |
| 6 | 150 | 168,27 | 88,90 |
| 8 | 200 | 219,07 | 101,60 |
| 10 | 250 | 273,05 | 127,00 |
| 12 | 300 | 323,85 | 152,40 |
| 14 | 350 | 355,60 | 165,10 |
| 16 | 400 | 406,40 | 177,80 |
| 18 | 450 | 457,20 | 203,20 |
| 20 | 500 | 508,00 | 228,60 |
| 22 | 550 | 558,80 | 254,00 |
| 24 | 600 | 609,60 | 266,70 |
| 28 | 700 | 711,20 | 266,70 |
CS Stub End Dimensions Chart (in lbs)
| NOMINAL PIPE SIZE | LAP DIAMETER | OUTSIDE DIAMETER | LONG PATTERN LENGTH | SHORT PATTERN LENGTH | RADIUS | |
|---|---|---|---|---|---|---|
| Inch. | A | OD Min | OD Max | L | L | R |
| 1/2 | 35 | 22.8 | 20.5 | 76 | 51 | 3 |
| 3/4 | 43 | 28.1 | 25.9 | 76 | 51 | 3 |
| 1 | 51 | 35 | 32.6 | 102 | 51 | 3 |
| 1 1/4 | 64 | 43.6 | 41.4 | 102 | 51 | 5 |
| 1 1/2 | 73 | 49.9 | 47.5 | 102 | 51 | 6 |
| 2 | 92 | 62.4 | 59.5 | 152 | 64 | 8 |
| 2 1/2 | 105 | 75.3 | 72.2 | 152 | 64 | 8 |
| 3 | 127 | 91.3 | 88.1 | 152 | 64 | 10 |
| 3 1/2 | 140 | 104 | 100.8 | 152 | 76 | 10 |
| 4 | 157 | 116.7 | 113.5 | 152 | 76 | 11 |
| 5 | 186 | 144.3 | 140.5 | 203 | 76 | 11 |
| 6 | 216 | 171.3 | 167.5 | 203 | 89 | 13 |
| 8 | 270 | 222.1 | 218.3 | 203 | 102 | 13 |
| 10 | 324 | 277.2 | 272.3 | 254 | 127 | 13 |
| 12 | 381 | 328 | 323.1 | 254 | 152 | 13 |
| 14 | 413 | 359.9 | 354.8 | 305 | 152 | 13 |
| 16 | 470 | 411 | 405.6 | 305 | 152 | 13 |
| 18 | 533 | 462 | 456 | 305 | 152 | 13 |
| 20 | 584 | 514 | 507 | 305 | 152 | 13 |
| 22 | 641 | 565 | 558 | 305 | 152 | 13 |
| 24 | 692 | 616 | 609 | 305 | 152 | 13 |
Carbon Steel Pipe Cap Weight
CS End Cap Weight Chart (in lbs)
| Nominal Pipe Size (NPS) | Schedule 40 (lbs) | Schedule 80 (lbs) | Schedule 160 (lbs) |
|---|---|---|---|
| 1/2″ | 0.16 | 0.23 | 0.30 |
| 3/4″ | 0.23 | 0.32 | 0.42 |
| 1″ | 0.30 | 0.45 | 0.60 |
| 1 1/4″ | 0.40 | 0.60 | 0.80 |
| 1 1/2″ | 0.50 | 0.75 | 1.00 |
| 2″ | 0.70 | 1.05 | 1.40 |
| 2 1/2″ | 1.05 | 1.60 | 2.10 |
| 3″ | 1.40 | 2.10 | 2.80 |
| 4″ | 2.00 | 3.00 | 4.00 |
| 5″ | 2.70 | 4.00 | 5.30 |
| 6″ | 3.50 | 5.20 | 7.00 |
| 8″ | 5.00 | 7.50 | 10.00 |
| 10″ | 7.50 | 11.20 | 14.90 |
| 12″ | 10.00 | 15.00 | 20.00 |
| 14″ | 12.50 | 18.70 | 25.00 |
| 16″ | 15.50 | 23.30 | 31.00 |
| 18″ | 19.00 | 28.50 | 38.00 |
| 20″ | 23.00 | 34.50 | 46.00 |
| 24″ | 30.00 | 45.00 | 60.00 |
| 28″ | 37.50 | 56.00 | 75.00 |
CS Stub End Dimensions Chart (in inches)
| Nominal Pipe Size (NPS) | D1 (Outside Diameter) | D2 (Diameter of Stub End) | L (Length) | B (Flange Thickness) |
|---|---|---|---|---|
| 1/2″ | 0.840 | 0.625 | 1.38 | 0.125 |
| 3/4″ | 1.050 | 0.875 | 1.50 | 0.125 |
| 1″ | 1.315 | 1.050 | 1.75 | 0.125 |
| 1 1/4″ | 1.660 | 1.375 | 2.00 | 0.125 |
| 1 1/2″ | 1.900 | 1.500 | 2.25 | 0.125 |
| 2″ | 2.375 | 2.000 | 2.50 | 0.125 |
| 2 1/2″ | 2.875 | 2.500 | 2.75 | 0.125 |
| 3″ | 3.500 | 3.000 | 3.00 | 0.125 |
| 4″ | 4.500 | 3.500 | 3.50 | 0.125 |
| 5″ | 5.563 | 4.500 | 4.00 | 0.125 |
| 6″ | 6.625 | 5.500 | 4.50 | 0.125 |
| 8″ | 8.625 | 7.000 | 5.00 | 0.125 |
| 10″ | 10.750 | 8.625 | 5.50 | 0.125 |
| 12″ | 12.750 | 10.750 | 6.00 | 0.125 |
| 14″ | 14.000 | 12.750 | 6.50 | 0.125 |
| 16″ | 16.000 | 14.000 | 7.00 | 0.125 |
| 18″ | 18.000 | 16.000 | 7.50 | 0.125 |
| 20″ | 20.000 | 18.000 | 8.00 | 0.125 |
| 24″ | 24.000 | 22.000 | 8.50 | 0.125 |
| 28″ | 28.000 | 26.000 | 9.00 | 0.125 |
Carbon Steel Pipe Cap Tolerance
CS Cap Tolerance
| Parameter | Tolerance |
|---|---|
| Outside Diameter (OD) | ±1% of nominal OD or ±0.5 mm, whichever is greater |
| Wall Thickness (WT) | ±12.5% of specified wall thickness |
| Height (H) | ±1.5% of the nominal height or ±3 mm, whichever is greater |
| Out-of-Roundness | ≤1% of the nominal OD |
| End Preparation | ±1 mm for bevel length and ±2° for bevel angle |
| Surface Finish | Free from defects such as cracks, dents, or visible seams |
| Marking Tolerance | Legible and durable markings in accordance with ASME, ANSI, or applicable standards |
Manufacturing Process
- Material Selection: High-quality carbon steel billets or plates are chosen based on the required grade.
Cutting: Material is cut into the desired size and shape using advanced machinery.
Shaping: The cut pieces are forged or pressed into the shape of a cap.
Heat Treatment: To enhance strength and durability, caps undergo annealing, quenching, or normalizing.
Surface Finishing: Anti-rust coatings or galvanization are applied.
Inspection: Each cap undergoes rigorous quality checks to ensure dimensional accuracy and mechanical properties.
Application
- Oil and Gas Pipelines
- Water Treatment Plants
- Petrochemical
- Construction
- Pressure Vessels
- Phosphate Mining
