Buttweld fittings

Inventory

First Distributors can often provide the items listed below for a same-day or next-day delivery. Large quantites, custom sizes, and special alloys (Alloy 20, Monel, Hastelloy, Inconel, Titanium, etc) may be subject to a longer lead time for delivery.





	Size Range:1/4" to 48" Diameter




	Types:90, 45, 180, Tee, Cross, Ecc Reducer, Conc Reducer, Cap




	Schedules:5, 10, 40 (STD), TRUE 40, 80 (XH), TRUE 80, 100, 120, 160, XXH




	Carbon Steel:A234 WPB, Y52, Y60, Y65, Y70




	Stainless Steel:304, 316




	Exotic Alloys:A20, C276, Duplex 2205, Duplex 2507, Monel, Inconel 600, Inconel 625, Incoloy 800, Incoloy 825

A Guide to the Materials Available

The following offers an in-depth view of the material grades sold by First Distributors. Each link below will provide the chemical composition, manufacturing specifications, yield and tensile strength, as well as other specific product and grade information.

1. Carbon Steel Butt Weld Fittings

ASTM A234 – Wrought Carbon and Alloy Steel Pipe Fittings :

This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction. This is the most common material for carbon steel butt weld fittings (specifically grade WPB) and is seamless up to 24”, where diameters of 24” or larger may come seamless or welded. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures.

ASTM A860:

This specification covers wrought high-strength ferritic steel butt-welding fittings of seamless and electric fusion-welded construction covered by the latest revisions of ASME B16.9 and MSS-SP-75. These fittings are for use in high-pressure gas and oil transmission and distribution systems.

2. Stainless Steel Pipe

A403

This specification covers the standard for seamless and welded wrought austenitic stainless steel butt weld fittings for pressure piping applications.

3. Special Alloy Steel Pipe

Special alloys are used for applications that require more demanding performance, such as extreme temperature and corrosive resistance. Each of the following exotic alloys provides unique attributes for such engineered applications. Applications for these alloys include, but are not limited to: chemical processing, chemical storage, pollution control, waste treatment, food processing, and pharmaceutical equipment.
  • Alloy 20
  • Duplex 2205
  • Super Duplex 2507
  • Hastelloy C276
  • Incoloy 800
  • Incoloy 825
  • Monel 400
  • Inconel 600
  • Inconel 625

A Guide to Shapes and Types of Butt Weld Fittings

Tees

Nipples can come to any specified length, but most commonly range between close to 12”. A close nipple is the shortest piece of pipe necessary to allow for fully threaded end connections, where there is no smooth surface between threads.

Elbows

A pipe elbow is a fitting is used to change the direction of flow in a piping system, usually at the 90° or 45° angle. Like a reducing tee, reducing elbows also exist to simultaneously change flow direction and reduce flow diameter. 90 degree elbows are also available in both short radius and long radius patterns , whereas 45 degree elbows are only available as long radius.
Long Radius (LR) vs Short Radius (SR)
A long radius elbow has a radius of curvature (Identified as “A” in the above drawing) is 1.5 times the nominal diameter, and a short radius elbow has a curvature that is 1.0 times the nominal diameter of the pipe. Long radius elbows give less frictional resistance to the fluid than the short radius elbows. Short radius are generally cheaper and can be used where space is a concern, but they also create a greater pressure drop than long radius.

Bend vs Elbow

There is often confusion around bends and elbows. Bends are generally made or fabricated as per the need of the piping design, whereas elbows are manufactured in mass quantities, conform to industry standard size specifications, and available off the shelf. Pipe bending techniques also face constraints regarding material thinning, and if not done properly, there can be concerns regarding the pressure integrity of the line being maintained. Elbows are most commonly used for SR and LR bends, but when the curvature exceeds 3R, bends are most commonly utilized.

Reducers

Reducers are used to facilitate a reduce the flow diameter in a piping system. Concentric reducers are most commonly used, as they create less friction for the fluid flow, however, eccentric reducers are utilized when space or alignment is a concern.

Cross

Crosses are a 4 way fitting, with 1 inlet and 3 outlets or vice versa. These are sometimes referred to as 4-way tees.

Caps

Caps are used to terminate the flow, welding to the end of the pipe.

Commonly Found Manufacturers





	Approved Carbon Steel Butt Weld Fittings ManufacturersCountry






	Awaji Sangyo K.K.Japan




	BenkanJapan




	Canadoil Forge LTDCanada




	Erne FittingsAustria




	Flo-Bend IncUSA




	Hackney Ladish IncUSA




	Mills Iron WorksUSA




	Piana S.p.A.Italy




	Proclad International Forging LtdUK




	Promat BD LtdUK




	PSL LimitedIndia




	RMA Machinen und ArmaturenbauGermany




	Shaw Alloy piping products (APP)USA




	Steel Forgings, IncUSA




	Tae Kwang BendKOREA




	Tecnoforge S.p.A.Italy




	TectubiItaly




	Tenaris RigaMexico




	Thai Benkan Co LtdThailand




	Tube Forgings of America Inc.USA




	Tube LineIndia




	UhligGerman




	Viar Meccanica SrlItaly




	Weldbend CorporationUSA




	WestbrookUSA




	WFIUSA




	Wilhelm Geldbach IndustriesGermany










	Approved Stainless Steel Butt Weld Fittings ManufacturersCountry






	Canadoil Forge LTDCanada




	Erne FittingsAustria




	Erne FittingsAustria




	Jiangsu HuayangChina




	Proclad International Forging LtdUK




	Promat BD LtdUK




	RMA Machinen und ArmaturenbauGermany




	Shaw Alloy piping products (APP)UK




	Tae Kwang BendKOREA




	Taylor Forge of CanadaDomestic




	Tecnoforge S.p.A.Italy




	TectubiItaly




	Thai Benkan Co LtdThailand




	Tube LineIndia




	UhligGerman




	Viar Meccanica SrlItaly




	WestbrookUSA




	WFIUSA




	Wilhelm Geldbach IndustriesGermany




	Wilhelm SchulzGermany