IMPA: 732631

Stainless Steel Threaded Round Nipples for Marine Piping Systems

Our stainless steel threaded round nipples are essential components for marine pipe fitting applications. Manufactured from high-grade AISI 316L stainless steel, these nipples offer excellent corrosion resistance in harsh saltwater environments, making them ideal for shipboard piping systems, including cooling water, fuel, and hydraulic lines.

Available in a wide range of sizes and thread configurations (NPT / BSP), these round nipples ensure leak-free connections and easy installation. Whether you are doing routine maintenance or a major refit, these marine-grade fittings meet the highest standards for durability and performance. Stocked under IMPA code 732631, they are ready for immediate supply to vessels worldwide.

Key Features

Technical Specifications

SpecificationDetails
MaterialAISI 316L Stainless Steel
Thread TypeNPT (ASME B1.20.1) / BSP (ISO 7-1)
Size Range1/8" – 2" (custom sizes available on request)
Pressure RatingUp to 3000 psi (varies by size and schedule)
Temperature Range-50°C to +300°C
StandardsASTM A312 / ASME B16.11
IMPA Code732631

Frequently Asked Questions

What grade of stainless steel is used?

Our threaded round nipples are made from AISI 316L (UNS S31603) stainless steel, which offers superior corrosion resistance to chlorides and marine atmospheres, making it the preferred choice for shipboard applications.

What thread standards are available?

We supply nipples with NPT (American National Standard Taper Pipe Threads) and BSP (British Standard Pipe) threads. Both types are available in standard sizes, and custom dimensions can be quoted upon request.

What pressure rating can these nipples handle?

Depending on the size and schedule (40 or 80), these nipples are rated for working pressures up to 3000 psi. Always verify the exact pressure rating for your specific configuration before installation.

Can I order non-standard sizes for specific shipboard piping?

Yes, we can manufacture round nipples in custom lengths, diameters, and thread configurations to meet your vessel's requirements. Contact our ship chandler team with your specifications for a quote.

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