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Pipe Nipples Fittings

A pipe nipple is a length of straight pipe with male threads on both ends. It is one of the most popular category of pipe fittings. It is a connector or a coupling threaded on both ends. Pipe nipples are used to allow plumbing to be connected to a water heater or other plumbing. They are used to fit straight end hose or pipe. A combination of pipe nipples are recommended for low-pressure discharge and suction service for various compatible liquids and not for compressible products like air, nitrogen or steam.

The working pressure of pipe nipples will vary with the size and construction of the pipe, the type and number of clamps used, clamp placement, proper installation of clamps, temperature and product being conveyed. Pipe nipples are available in the widest variety of wall thicknesses and materials in the industry.

Materials used:
Various materials are used to make pipe nipples such as:
  • Brass
  • Aluminum
  • Stainless steel
  • Iron
  • Copper
  • PVC
  • Carbon steel
  • Cast Iron etc.

Pipe nipple fabrication:

  • Threaded nipples
  • Grooved nipples
  • Bended nipples
  • Barbed nipples
  • Seamless nipples

Buying tips

What should buyers look for in the bulk purchase of pipe nipples?
  • Tube selection
    • Material, thickness
    • Diameter
  • General technical specifications
    • Pressures
    • Safety coefficients
    • Temperatures
    • Conformity to the standards, Certifications
    • Standard, Double duty, Extra duty, Extra double duty
  • End Connections
    • Threads
    • Beveled Ends
    • Square Cut Ends
    • Grooved
    • Bended
    • Barbed
    • Seamless
Finishes on pipe nipples:
  • Black coating
  • Electro galvanized
  • Hot-dipped galvanized finishes
  • Copper plating etc.
Types of pipe nipples:
  • Barrel nipple: This is a type of a short tubular with a taper thread outside at each end and which is un-threaded in the middle.
  • Weld nipple: Weld nipple is used as another method of connecting tube fittings. These kind of nipples are suitable for use under extreme conditions of vibration, pressure surges and changes of temperature.
  • Swage nipple: The basic purpose of a swage nipple is to bringing the flow of fluids from one pipe size to another. These are available with plain, beveled or threaded ends.
  • Hexagon nipple: Hexagon nipples are available in a variety of threads, materials and lengths.
Pipe nipples: End finishes:

Tapered pipe thread

Straight pipe thread

Roller Cut

Reamed and chamfered

Square cut


Applications of pipe nipples:
Pipe nipples are used as pipe fittings in a wide variety of industrial applications like:
  • Chemical processing industries
  • Petrochemical
  • Pharmaceutical
  • Food & beverage
  • Pulp & paper
  • Shipbuilding / marine
  • Waste incineration
  • Machine building
  • Architectural
  • Semiconductor etc.