A53 Pipe

• A53 Steel Pipe

  ASTM A53 pipe (also referred to as ASME SA53 pipe) is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. It is suitable for welding and for forming operations involving coiling, bending, and flanging, subject to certain qualifications.

  Scope

  ASTM A53 pipe covers Seamless and Welded, Black and Hot-Dipped Galvanized nominal (average) wall pipe for coiling, bending, flanging and other special purposes and is suitable for welding. Continuous-Welded pipe is not intended for flanging. Purpose for which pipe is intended should be stated on order.

  Materials and Manufacture

  The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric furnace, or basic-oxygen. The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding.

  

• Hot-Dipped Galvanizing

  The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.

  Permissible Variations in Weights per Foot

  Hydrostatic inspection test pressures for plain end and threaded and coupled pipe are specified. Hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and electric-resistance-weld pipe.

  Mechanical Tests Specified

  Flattening Test — NPS 2 and larger STD and XS. (Not required for XXS pipe.)

  Tensile Test — Transverse required on ERW for NPS 8 and large. Sending Test (Cold) — STD and XS-NPS 2 and under XXS-NPS 1 1/4 and under.

  

Grade B

NPS ¼” to 30” diameter

Schedules 10 through 160, STD, XH and XXH