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:
The use of carbon steel ensures that these pipe nipples exhibit high strength, resistance to pressure, and durability under challenging conditions.
Strength and Durability: Carbon steel nipples can withstand high pressure and mechanical stress, making them suitable for demanding industrial applications.
Corrosion Resistance: While carbon steel is susceptible to rust, applying coatings or galvanization significantly enhances its resistance to environmental factors.
Versatility: Available in various grades, sizes, and thread types, carbon steel nipples are adaptable to different operational requirements.
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.
Parameter | Specification |
---|---|
Material | Carbon Steel (ASTM A106, A53, API 5L, etc.) |
Size Range | ¼” to 12” (Nominal Pipe Size) |
Length | 2” to 120” (Custom lengths available) |
Thread Type | NPT, BSPT, BSPP, or custom as per requirement |
Pressure Rating | Sch 40, Sch 80, Sch 160, Sch XXS, etc. |
Coating Options | Black (uncoated), galvanized, anti-rust coatings, epoxy-coated |
End Connection | Threaded Both Ends (TBE), Threaded One End (TOE), Plain Ends |
Standards Compliance | ASTM A733, ASME B1.20.1, ISO 7/1 |
Testing | Hydrostatic, nondestructive, and dimensional accuracy tests |
Temperature Range | -20°C to 400°C (dependent on material grade and coating) |
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″) |
Material Selection: High-quality carbon steel, compliant with industry standards such as ASTM or ASME, is selected.
Cutting: Steel pipes are cut to the desired length using precision cutting tools.
Threading: Threads are machined on one or both ends of the nipple using lathes or CNC machines.
Coating (Optional): To enhance corrosion resistance, nipples may undergo galvanization, blackening, or application of anti-rust coatings.
Quality Inspection: Each nipple undergoes rigorous testing for dimensional accuracy, threading quality, and material integrity.
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