,

ASTM A105 Carbon Steel Cap

ASTM A105 Carbon Steel Cap

SpecificationDetails
MaterialASTM A105 Carbon Steel (Forged Grade)
TypePipe End Cap (Butt Weld Cap, Forged Cap, Socket Weld Cap, Threaded Cap)
Size Range½” to 48” (Custom sizes available)
StandardsASME B16.9, ASME B16.11, MSS-SP-75
Pressure RatingsClass 150, 300, 600, 900, 1500, 2500
End ConnectionsButt Weld, Socket Weld, Threaded
Surface FinishBlack Painted, Anti-Rust Oil Coated, Galvanized (Optional)
ApplicationsOil & Gas Pipelines, Petrochemical Plants, Power Generation, Refineries, Water Treatment, Marine Engineering

ASTM A105 Carbon Steel Cap

ASTM A105 Carbon Steel Cap is a vital component in piping systems across various industries. ASTM A105 is a standard specification for forged carbon steel piping components used in pressure systems at ambient and higher-temperature service conditions. A105 Carbon Steel Caps are forged fittings made from this material, designed to close off pipe ends, ensuring no leakage or flow beyond the termination point.

Key Features of ASTM A105 Carbon Steel Caps

  • Material Strength: ASTM A105 Carbon Steel exhibits high tensile and yield strength, making the caps robust and reliable under varying pressure conditions.
  • Versatility: Suitable for use in high-temperature and high-pressure environments.
  • Durability: Resists wear and tear, ensuring long service life.
  • Corrosion Resistance: Offers moderate corrosion resistance, especially when coated or treated.

ASTM A105 Dimensions

Carbon Steel End Cap Sizes 

  • 20 mm: O.D. (D) = 508 mm, length (H) = 229 mm
  • 22 mm: O.D. (D) = 559 mm, length (H) = 254 mm
  • 24 mm: O.D. (D) = 610 mm, length (H) = 267 mm
  • 26 mm: O.D. (D) = 660 mm, length (H) = 267 mm
NPS O.D. LENGTH LENGTH
D H H1
1/2 21.3 25 25
3/4 26.7 25 25
1 33.4 38 38
1.1/4 42.2 38 38
1.1/2 48.3 38 38
2 60.3 38 44
2.1/2 73 38 51
3 88.9 51 64
3.1/2 101.6 64 76
4 114.3 64 76
5 141.3 76 89
6 168.3 89 102
8 219.1 102 127
10 273 127 152
12 323.8 152 178
14 355.6 165 191
16 406.4 178 203
18 457 203 229
20 508 229 254
22 559 254 254
24 610 267 305
26 660 267
28 711 267
30 762 267
32 813 267
34 864 237
36 914 267
38 965 305
40 1016 305
42 1067 305
44 1118 343
46 1168 343
48 1219 343

ASTM A105 Tolerance

Nominal Pipe Size (NPS) Outside Ø at Bevel Inside Ø at End Wall Thickness Overall Length E
t / t1
1/2 a 2 1/2 1 0,8 Not 4
3 a 3 1/2 1 1,6 less 4
4 1 1,6 than 4
5 a 6 2 1,6 87,50% 7
8 2 1,6 of nominal 7
10 1 3,2 thickness 7
12 a 18 +4 -3 3,2 7
20 a 24 +6 -5 4,8 7
26 a 30 2 4,8 10
32 a 48 2 4,8 10

Manufacturing Standards and Compliance

ASTM A105 Carbon Steel Caps adhere to strict international standards, ensuring quality and reliability. Key standards include:

  1. ASTM A105/A105M: Governs the material and manufacturing process.
  2. ASME B16.9: Outlines dimensions and tolerances for factory-made wrought fittings.
  3. ANSI B16.11: Specifies forged fittings like caps for socket-weld and threaded connections.

Applications

ASTM A105 Carbon Steel Caps are widely used in various industries due to their versatility and robustness. Common applications include:

  • Oil and Gas Industry:
      • Closing pipe ends in refineries and offshore platforms.
      • Suitable for pipelines transporting oil, gas, and other hydrocarbons.
  • Petrochemical Industry:
      • Used in chemical processing plants where high-pressure containment is crucial.
  • Power Plants:
      • Applied in steam and water piping systems.
      • Suitable for use in high-temperature environments.
  • Shipbuilding:
      • Essential in marine piping systems, ensuring secure closures.
  • Water Treatment Plants:
      • Used in water pipelines to manage flow termination and maintenance.
  • General Construction:
    • Closing off structural pipe ends in construction frameworks.

Surface Treatment and Coating

To enhance corrosion resistance and extend the service life, ASTM A105 Carbon Steel Caps may undergo the following treatments:

  • Galvanization:
      • Zinc coating to prevent rust.
  • Painting:
      • Epoxy or enamel coatings for additional protection.
  • Pickling and Passivation:
    • Removes surface impurities, enhancing resistance to corrosive environments.

Comparison with Other Standards

Standard Material Type Applications
ASTM A106 Seamless Carbon Steel High-temperature piping systems
ASTM A234 WPB Wrought Carbon Steel Fittings for pressure systems
ASTM A216 WCB Cast Carbon Steel Valves and flanges

Conclusion

The ASTM A105 Carbon Steel Cap is a robust, versatile, and cost-effective solution for sealing pipe ends in high-pressure and high-temperature systems. Its compliance with international standards, combined with excellent mechanical properties, makes it a preferred choice across industries. By understanding its specifications, applications, and best practices, professionals can ensure optimal performance and longevity of piping systems.

Reviews

There are no reviews yet.

Be the first to review “ASTM A105 Carbon Steel Cap”

Your email address will not be published. Required fields are marked *

Scroll to Top