FORGED FITTINGS

Forged Fittings

All of the steel forged fittings that Special Piping Materials supplies are corrosion resistant and designed to operate in high-pressure environments. By ‘steel’, we are referring to stainless steel, duplex, super duplex and 6% Moly.

We have a wide variety of fittings available, both in stock and bespoke made including:

• 45° elbows
• 90° elbows
• Straight and reducing tees
• Couplings
• Half couplings
• Caps
• Plugs
• Crosses

Forged steel fittings are available in both threaded and socket weld end connections.

Forged steel fittings are the fittings made by forged steel. The manufacturing process of forged steel fittings is detailed below.

Manufacturing of forged fittings

The manufacturers and mills that we source our forged fittings from are some of the most reputable in the industry. They work to the most exacting standards to ensure the quality of the products that they forge.

Drop forging is the most common manufacturing process of forged fittings. It is a processing method whereby a forging press is used to put pressure on metal blanks in order to obtain certain mechanical properties, and particular shapes and sizes. In general, the steel goes through some or all of the following processes in order to manufacturer the final product:

• Forging billet blanking
• Forging billet heating
• Roll forging
• Die forging forming
• Trimming cutting
• Punching
• Correction
• Intermediate inspection
• Heat treatment
• Metal cutting
• Clear up
• Final inspection

During their final inspection, steel forged fittings must pass through appearance and hardness tests, chemical composition testing, mechanical properties testing, and NDT testing, as well as any other testing that the end client requires.

Advantages of forged fittings

There are many advantages of forged fittings as opposed to casted fittings. These are as follows:

• Due to the tight grain structure a forged fitting is mechanically stronger than a casted one
• Forged products are not susceptible to cavities, cold pour problems, porosity or shrinkage
• Forged fittings can use less expensive alloys but still retain very high strength
• The microstructure of forgings means it has more wear resistance and therefore is less likely to become brittle.
• Forged fittings can withstand higher pressures in more extreme conditions
• Forged fittings have a longer and typically more reliable life expectancy than casted fittings
• Forged fittings are usually less expensive than casted ones

Different types of forged fittings (applications and advantages)

Tees: Forged tees are a type of forged steel fitting that is used to combine or divide the flow of a liquid. Reducing Tees are a specific type of tee that allows for pipe size change. The run outlets of a tee are the two in-line outlets, and the branch is the third reducing outlet.

Elbows: A pipe elbow is a forged steel fitting that has been installed between two lengths of pipe or tube that allows a change of direction, usually by 90° or 45°. Reducing elbows can both simultaneously change flow direction and reduce flow diameter.

Couplings: Couplings are a forged steel fitting that is used to connect two lengths of pipe. One end is screwed into the pipe while the other end can be tightly inserted, or welded, onto the other end to pipe or vessel.

Unions: Unions are similar to a coupling but allow two lengths of pipe to be assembled and detached without causing any deformation to the pipes.

Bushings: Bushings are forged steel fittings that allow for a change in pipe size.

Caps: Caps are just as the name suggest – they cap the flow by being inserted over the end of the pipe.

Plugs: Similar to a cap, plugs stop the flow of a liquid in the pipe. They come in different head types, such as hex, square, and round.

Crosses: As you would expect, crosses are a 4-way fitting. They have one inlet and three outlets or vice versa and allow for four pipes to meet together. The diameter of the outlets and inlets can be the same or different.

Quality control

All the forged fittings that Special Piping Materials sources and supply meet the requirements of the oil, gas petrochemical, water treatment and other heavy industries.

Here is a full list of the forged fittings that we stock, in a range different exotic material:

• Super Duplex (both F53 / F55)
• Duplex (F51 / F60)
• 6% Moly (F44)
• Stainless Steels (316L, 304L, 904L, 310, 321, etc)

Special Piping Materials’ forged fittings are manufactured in accordance with the American Society for Testing & Materials (ASTM) Standard as follows:

• ASTM A182

The dimensional standard of the buttweld fittings we supply are in accordance with the American National Standards Institute (ANSI):

• ANSI B16.11
• MSS SP43
• MSS SP75

In stock in our warehouses around the world, we have the following sizes available:

• ½” to 4” in pressure ratings 3000, 6000 and 9000lbs. Ends can be socket welded (SW) or threaded (MPT/BSPT).

As well as being able to provide these standard sizes and specifications, we can also source more bespoke fittings to fit our clients’ specific drawings or project requirements.

Special Piping Materials and Forged Fittings

The team at Special Piping Materials has supplied and stocked a wide range of forged fittings to our clients for many years. They are used extensively across a variety of industries such as Petrochemical, LNG, desalination, Oil & Gas, Mining.

We carry many forged fittings in stock in our warehouses across the globe but can also work with our network of manufacturers to produce bespoke products to our clients’ exacting specifications.

Special Piping Materials’ forged fittings have been fully tested to international standards to ensure we only supply the highest quality products. Speak to our sales team today in one of our offices across the globe.