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S/A 53 Spec Sheet <br /> A53 Pipe Specifications <br /> A/SA53 <br /> NPS 1/4"-30" <br /> Schedules 10 through 160, STD, XH and XXH <br /> Scope <br /> ASTM A53 pipe covers Seamless and Welded, Black and Hot-Dipped Galvanized nominal (average) wall pipe for coiling, bending, <br /> flanging and other special purposes and is suitable for welding. Continuous-Welded pipe is not intended for flanging. Purpose for <br /> which pipe is intended should be stated on order. <br /> Materials and Manufacture <br /> The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric furnace, <br /> or basic-oxygen. The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding. <br /> Chemical Requirements <br /> Type S Type E Type F <br /> (seamless) (electric- (furnace- <br /> resistance welded) welded pipe) <br /> Grade A Grade B Grade A Grade B Grade A <br /> Carbon max. % 0.25 0.30 0.25 0.30 0.3 <br />