As one of the best astm a53 steel pipe manufacturers and suppliers,Website: , and equipped with one of the well-known astm a53 steel pipe brands and productive factory and company, World Iron & Steel Co.,Ltd is always at your service.ASTM A53 steel pipe covers seamless and welded black and hot-dipped galvanized steel pipe in DN6-DN650,ASTM A53 carbon steel pipe may be furnished in the type F ,Type E and Type S. grade including of garde A and grade B,Now,Astm A53 grb welded pipe in stocks a full range of NPS ¼” to 30” diameter and Schedules 10 through 160, STD, XH and XXH.ASTM A53 :Standard Specification for pipe,steel,black and hot-dipped,Zinc-Coated,Welded and Seamless.