| Standard: | ASTM A234/ASME SA234 | Material: | WPB |
|---|---|---|---|
| Type: | Carbon Steel Buttweld Cap | Connection: | Welding |
| Size: | 1/2′-48′(DN15-DN1200) Or Custom Size | Thickness: | SCH10S-XXS(2-60mm) |
| Surface: | Black Painting | Packing: | Plywood Case/Pallet |
| High Light: | ASME SA234 Butt Weld Pipe Fitting， Carbon Steel WPB Cap， Butt Weld WPB Cap | ||
ASTM A234 / ASME SA234 WPB CAP CARBON STEEL BUTT WELD PIPE FITTING
Overview:
ASTM A234 WPB Cap is a type of carbon steel fitting designed to cover the end of a pipe. The cap is shaped like a dome and fits over the end of the pipe， providing protection to the piping system. ASTM A234 WPB is the standard specification for carbon steel pipe fittings including caps， and it covers seamless and welded fittings produced from carbon steel materials. The WPB in the standard stands for "Wrought Pipe Fittings made of Carbon Steel and Alloy Steel for Moderate and High Temperature Service". The ASTM A234 WPB Cap is commonly used in various industries such as oil refineries， chemical processing plants， and power generation facilities. It is available in different sizes， shapes， and finishes to suit different piping applications.
Specification:
| Standard | ASTM A234/ASME SA234 |
| Material | WPB |
| Type | Buttweld Cap |
| Connection | Welding |
| Size | 1/2"-48"(DN15-DN1200) or custom size |
| Thickness | SCH10S-XXS(2-60mm) |
| Surface | Black Painting |
| Packing | Plywood case/Pallet |
Chemical Composition:
| Grade | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | Others |
| WPB | 0.03 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 | Vanadium 0.08 |
Mechanical Properties:
| Grade | Yield Strength， min， ksi [MPa] | Tensile Strength， min， ksi [MPa] | Elongation % |
| WPB | 35(240) | 60(415) | 22 |
Dimension for BW Cap:
| Nominal Size | Out Diameter at Bevel (mm) | Length (mm) | Limiting Wall Thickness for Length E (mm) | ||
| DN | NPS | O.D. | E | E1 | |
| 15 | 1/2 | 21.3 | 25 | 25 | 4.57 |
| 20 | 3/4 | 26.7 | 25 | 25 | 3.81 |
| 25 | 1 | 33.4 | 38 | 38 | 4.57 |
| 32 | 1 1/4 | 42.2 | 38 | 38 | 4.83 |
| 40 | 1 1/2 | 48.3 | 38 | 38 | 5.08 |
| 50 | 2 | 60.3 | 38 | 44 | 5.59 |
| 65 | 2 1/2 | 73.0 | 38 | 51 | 7.11 |
| 80 | 3 | 88.9 | 51 | 64 | 7.62 |
| 90 | 3 1/2 | 101.6 | 64 | 76 | 8.13 |
| 100 | 4 | 114.3 | 64 | 76 | 8.64 |
| 125 | 5 | 141.3 | 76 | 89 | 9.65 |
| 150 | 6 | 168.3 | 89 | 102 | 10.92 |
| 200 | 8 | 219.1 | 102 | 127 | 12.7 |
| 250 | 10 | 273.0 | 127 | 152 | 12.7 |
| 300 | 12 | 323.8 | 152 | 178 | 12.7 |
| 350 | 14 | 355.6 | 165 | 191 | 12.7 |
| 400 | 16 | 406.4 | 178 | 203 | 12.7 |
| 450 | 18 | 457.0 | 203 | 229 | 12.7 |
| 500 | 20 | 508.0 | 229 | 254 | 12.7 |
| 550 | 22 | 559.0 | 254 | 254 | 12.7 |
| 600 | 24 | 610.0 | 267 | 305 | 12.7 |
| 650 | 26 | 660.0 | 267 | … | … |
| 700 | 28 | 711.0 | 267 | … | … |
| 750 | 30 | 762.0 | 267 | … | … |
| 800 | 32 | 813.0 | 267 | … | … |
| 850 | 34 | 864.0 | 267 | … | … |
| 900 | 36 | 914.0 | 267 | … | … |
| 950 | 38 | 965.0 | 305 | … | … |
| 1000 | 40 | 1016.0 | 305 | … | … |
| 1050 | 42 | 1067.0 | 305 | … | … |
| 1100 | 44 | 1118.0 | 343 | … | … |
| 1150 | 46 | 1168.0 | 343 | … | … |
| 1200 | 48 | 1219.0 | 343 | … | … |
| GENERAL NOTE: The shape of these caps shall be ellipsoidal and shall conform to the requirements given in the ASME Boiler and Pressure Vessel Code. NOTES: (1) Length E applies for thickness not exceeding that given in column “Limiting Wall Thickness for Length， E.” (2) Length E1 applies for thickness greater than that given in column “Limiting Wall Thickness for Length， E” for NPS 24 and smaller. For NPS 26 and larger， length E1 shall be by agreement between the manufacturer and purchaser. | |||||
