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Carbon Steel Nipple

Carbon steel nipples are cylindrical pieces of carbon steel pipe, typically used to connect two pipe fittings or extend a pipeline. They are available in various diameters, lengths, and threading configurations, such as:

  • Threaded Both Ends (TBE): Threads on both ends for easy installation.
  • Threaded One End (TOE): Threads on one end and plain on the other.
  • Plain Both Ends (PBE): No threads, suitable for welding.

The use of carbon steel ensures that these pipe nipples exhibit high strength, resistance to pressure, and durability under challenging conditions.

Key Properties of Carbon Steel Nipples

  1. Strength and Durability: Carbon steel nipples can withstand high pressure and mechanical stress, making them suitable for demanding industrial applications.

  2. Corrosion Resistance: While carbon steel is susceptible to rust, applying coatings or galvanization significantly enhances its resistance to environmental factors.

  3. Versatility: Available in various grades, sizes, and thread types, carbon steel nipples are adaptable to different operational requirements.

  4. Cost-Effectiveness: Carbon steel is relatively inexpensive compared to other metals like stainless steel or titanium, making it a budget-friendly choice for many industries.

Technical Specification Table

ParameterSpecification
MaterialCarbon Steel (ASTM A106, A53, API 5L, etc.)
Size Range¼” to 12” (Nominal Pipe Size)
Length2” to 120” (Custom lengths available)
Thread TypeNPT, BSPT, BSPP, or custom as per requirement
Pressure RatingSch 40, Sch 80, Sch 160, Sch XXS, etc.
Coating OptionsBlack (uncoated), galvanized, anti-rust coatings, epoxy-coated
End ConnectionThreaded Both Ends (TBE), Threaded One End (TOE), Plain Ends
Standards ComplianceASTM A733, ASME B1.20.1, ISO 7/1
TestingHydrostatic, nondestructive, and dimensional accuracy tests
Temperature Range-20°C to 400°C (dependent on material grade and coating)

Carbon Steel Nipple Dimensions

NPS Outer Diameter (OD)Close Length (mm/inch)Short Length (mm/inch)Long Length (mm/inch)Schedule 40 Wall Thickness (mm/inch)Schedule 80 Wall Thickness (mm/inch)
1/8″10.3 mm (0.41″)50 mm (2″)75 mm (3″)150 mm (6″)1.73 mm (0.068″)2.41 mm (0.095″)
1/4″13.7 mm (0.54″)50 mm (2″)75 mm (3″)150 mm (6″)2.24 mm (0.088″)3.02 mm (0.119″)
3/8″17.1 mm (0.675″)50 mm (2″)75 mm (3″)150 mm (6″)2.31 mm (0.091″)3.20 mm (0.126″)
1/2″21.3 mm (0.84″)50 mm (2″)100 mm (4″)200 mm (8″)2.77 mm (0.109″)3.73 mm (0.147″)
3/4″26.7 mm (1.05″)50 mm (2″)100 mm (4″)200 mm (8″)2.87 mm (0.113″)3.91 mm (0.154″)
1″33.4 mm (1.32″)75 mm (3″)150 mm (6″)300 mm (12″)3.38 mm (0.133″)4.55 mm (0.179″)
1 1/4″42.2 mm (1.66″)75 mm (3″)150 mm (6″)300 mm (12″)3.56 mm (0.140″)4.85 mm (0.191″)
1 1/2″48.3 mm (1.90″)75 mm (3″)150 mm (6″)300 mm (12″)3.68 mm (0.145″)5.08 mm (0.200″)
2″60.3 mm (2.37″)100 mm (4″)200 mm (8″)300 mm (12″)3.91 mm (0.154″)5.54 mm (0.218″)
2 1/2″73.0 mm (2.87″)100 mm (4″)200 mm (8″)300 mm (12″)5.16 mm (0.203″)7.01 mm (0.276″)
3″88.9 mm (3.50″)150 mm (6″)200 mm (8″)300 mm (12″)5.49 mm (0.216″)7.62 mm (0.300″)
4″114.3 mm (4.50″)150 mm (6″)200 mm (8″)300 mm (12″)6.02 mm (0.237″)8.56 mm (0.337″)

Manufacturing Process

  1. Material Selection: High-quality carbon steel, compliant with industry standards such as ASTM or ASME, is selected.

  2. Cutting: Steel pipes are cut to the desired length using precision cutting tools.

  3. Threading: Threads are machined on one or both ends of the nipple using lathes or CNC machines.

  4. Coating (Optional): To enhance corrosion resistance, nipples may undergo galvanization, blackening, or application of anti-rust coatings.

  5. Quality Inspection: Each nipple undergoes rigorous testing for dimensional accuracy, threading quality, and material integrity.

Advantages

  • High Strength: Suitable for high-pressure and high-temperature applications.
  • Cost Efficiency: Provides excellent value for money compared to alternatives.
  • Customizability: Available in various configurations to meet specific requirements.
  • Longevity: Durable under demanding conditions with proper maintenance.

Application

  • Oil and Gas Pipelines
  • Water Treatment Plants
  • Petrochemical
  • Construction
  • Pressure Vessels
  • Phosphate Mining

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