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Steel pipe nipple 12 inches long with black anodized finish and threaded ends

Beck C. H.

Beck C. H. Pipe Nipple Steel 3/8" NPTxNPT 12

SKU CH-SCKW-D57TC

Steel pipe nipple with 3/8 inch NPT threads and 12 inch length rated for 300 psi at 150 degrees Fahrenheit

  • ColorTransparent
  • Steel Grade B withstands 300 psi at 150 °F
  • Black anodized finish resists corrosion in air, gas and oil lines
  • Welded construction ensures leak-free joints for 3/8 in NPT threads
  • Made in USA with 31/64 in bore for reliable flow
  • 12 inch length suits tight plumbing installations

Steel Pipe Nipple for Fluid Transfer

This 12-inch steel pipe nipple connects components in air, gas, non-potable water, and oil systems. It features 3/8-inch NPT male threads on both ends and a welded construction for structural integrity. The Grade B steel body carries a black anodized finish and is manufactured in the USA.

Pressure and Temperature Operating Limits

The fitting handles a maximum operating pressure of 300 psi at 150 degrees Fahrenheit for general fluids. For steam service, the limit is 150 psi at 360 degrees Fahrenheit. These ratings define the safe envelope for the 31/64-inch inside diameter and the nominal 3/8-inch pipe size.

Threaded Installation and Common Issues

Installation requires threading the NPT ends into compatible female fittings with appropriate sealant to prevent leaks. Over-tightening can crack the welded steel body or strip the tapered threads. The black anodized coating resists corrosion but does not eliminate the need for proper thread engagement and alignment during assembly.

Highlights

  • Steel Grade B withstands 300 psi at 150 °F
  • Black anodized finish resists corrosion in air, gas and oil lines
  • Welded construction ensures leak-free joints for 3/8 in NPT threads
  • Made in USA with 31/64 in bore for reliable flow
  • 12 inch length suits tight plumbing installations

Specifications

ColorTransparent
BrandBECK

Questions about this item

Is the 12 inch length the right choice for my air or gas line?

The 12 inch nipple fits standard 3/8 inch NPT threads and is rated for 300 psi air, gas or oil service at 150 degrees F, so choose it when you need that exact reach between two female fittings.

What does the 300 psi rating mean once the nipple is installed?

It means the welded Grade B steel nipple with black anodized finish will safely contain air, gases, non-potable water or oils up to 300 psi at 150 degrees F without leaking or bursting.

How does the NPT thread standard limit what I can connect?

The 3/8 inch NPT taper threads seal only with matching NPT fittings; they cannot join to straight threads, compression ends or larger pipe sizes without an adapter.

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