Alternatives to ASTM A105 for MSS-SP83 pipe unions

rbrez · Nov 22, 2004

MSS-SP83 for pipe unions specify the use of ASTM A105 for carbon steel material. We are finding A105 very hard to source. MSS-SP83 states that "Unions may be made from materials of other wrought material by agreement between the manufacturer and the purchaser but shall not be marked SP-83". What are acceptable alternatives that are readily available?

unclesyd · Nov 22, 2004

What type union are you looking for?

rbrez · Nov 22, 2004

Sorry - a threaded pipe union.

NozzleTwister · Nov 22, 2004

rbrez,

You're obviously looking talking to the wrong suppliers. ASTM A105 forged carbon steel is the material for 3000# carbon steel unions per MSS SP-83-2001.

You might try contacting the following manufacturers, Bonney Forge or Kemper Valve and Fittings, they both have websites.

Good luck,

NozzleTwister
Houston, Texas

unclesyd · Nov 22, 2004

If you need an O-ring union check this one out.

http://www.hartindustries.com/products.html

If you need a Hammer union check this one out.

http://www.boltex.com

codeeng · Nov 23, 2004

As far as I know carbon steel unions only come in A105. See attched Bonney Forge site.

http://www.bonneyforge.com/LU132.pdf

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Alternatives to ASTM A105 for MSS-SP83 pipe unions

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