SECTION 232113 - HYDRONIC PIPING

Pipe Sizes 2 Inch or Smaller: Socket-welding fittings, 2000 lb, ASTM A 181, ANSI B16.11. Pipe Sizes 2-1/2 Inch or Larger: Butt-welding fittings, schedule 40, ASTM A 234, ANSI B16.9. Short radius elbows (ANSI B16.28) will be allowed on gas piping systems, but long radius elbows are preferred and shall be used on other piping systems. ................
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