ANSI, ASTM and API Designations for Piping

 
ANSI Designation ASTM or API Designation

Title

 Remarks
B36.1 ASTM A53 Welded and Seamless Steel Pipe
B36.3 ASTM A106 Seamless Carbon-Steel Pipe for High-Temperature Service
B36.20 ASTM A120 Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Ordinary Uses
B36.4 ASTM A134 Electric-Fusion (Arc)- Welded Steel Plate Pipe, Sizes 16 in. and Over
B36.5 ASTM A135 Electric-Resistance-Welded Steel Pipe
B36.9 ASTM A139 Electric-Fusion (Arc)-Welded Steel Pipe, Sizes 14 in. and Over
B36.11 ASTM A155 Electric-Fusion-Welded Steel Pipe for High-Temperature Service
B36.16 ASTM A211 Spiral-Welded Steel or Iron Pipe
B36.26 ASTM A312 Seamless and Welded Austenitic Stainless Steel Pipe > Redesignated B125.16
B36.40 ASTM A333 Seamless & Welded Steel Pipe for Low-Temp Service > Redesignated B26.27
B36.42 ASTM A335 Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
B36.47 ASTM A358 Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service
B36.49 ASTM A381 Metal-Arc Welded Steel Pipe for High-Pressure Transmission Service
  ASTM A523 Plain End Seamless and Electric-Resistance-Welded Steel Pipe for High-Pressure Pipe-Type Cable Circuits
  API 5L Line Pipe
  API 5LX High-Test Line Pipe
  API 5LS Spiral Weld Line Pipe


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The Gilmour Supply Co. provides a wide range of plumbing pipe and supplies in the NY, NJ and CT tri-state area. Plumbing supplies for commercial plumbers, contractors, maintenance and MRO. Copper tube and pipe, steel pipe, valves and fittings of all types. Butterfly valves, unions, ball valves, from pipe and valve manufacturers such as Victaulic, Nibco, Slant Fin and Smith Boilers.

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