We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black steel pipe with threaded ends, 2 ft 6 in long

Value Brand

Value Brand 3/4" MNPT x 2 ft 6" TBE Black Pipe Sch 40

SKU CH-J198-51XF4

Sch 40 black steel pipe with 3/4" MNPT ends for air, gas, oil or steam up to 1454 psi at 650 °F

  • Schedule 40 steel rated for 1454 psi at 650 °F
  • Welded Grade B construction handles -20 °F to 600 °F
  • 3/4 in MNPT ends suit Class 150 fittings
  • Black coating protects air, gas, oil and steam lines
  • 2 ft 6 in TBE length ready for threading

3/4" Schedule 40 Black Steel Pipe

This 3/4 inch nominal pipe size Schedule 40 black steel pipe measures two feet six inches in length with male NPT threads on both ends. It is manufactured from Grade B welded steel and carries a black finish. The inside diameter is 13/16 inches. Suitable for conveying air, natural gas, non-potable water, oil, and steam in compatible systems.

Pressure and Temperature Ratings

The pipe handles a maximum operating pressure of 1454 psi at 650 degrees Fahrenheit for both standard and steam service. It is rated for a maximum operating temperature of 600 degrees Fahrenheit and a minimum of minus 20 degrees Fahrenheit. Fitting compatibility is rated to Class 150. Gravity flow is not supported by this construction.

Replaces Worn or Undersized Threaded Pipe

Use this nipple to replace corroded, leaking, or damaged sections of existing 3/4 inch Schedule 40 black steel piping. The jump is worth it when the current line shows thread wear, internal scaling, or pressure loss at the joints. Not for potable water lines or systems requiring gravity-fed drainage.

Highlights

  • Schedule 40 steel rated for 1454 psi at 650 °F
  • Welded Grade B construction handles -20 °F to 600 °F
  • 3/4 in MNPT ends suit Class 150 fittings
  • Black coating protects air, gas, oil and steam lines
  • 2 ft 6 in TBE length ready for threading

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 3/4 in MNPT threaded ends on this Sch 40 black steel pipe?

Clean threads, apply pipe thread sealant or PTFE tape clockwise on male threads only, tighten into Class 150 fittings with a pipe wrench until snug, then one more turn; the step often missed is skipping sealant or over-tightening which cracks the fitting.

What maintenance or replacement will this welded Grade B steel pipe need over time?

Inspect annually for external corrosion, internal scale buildup, and thread seal integrity; replace if wall loss exceeds Sch 40 minimum, leaks appear at joints, or the pipe sees pressures above 1454 psi at 650 °F.

What is the first limit reached under sustained high-temperature steam service?

The 1454 psi maximum steam pressure rating at 650 °F is the primary design limit; exceeding it risks permanent deformation of the Grade B steel before the 600 °F temperature ceiling is reached.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.