ASTM A519 Seamless steel pipe standard & Grade :ASTM A519 Seamless steel pipe 1020,1025,4130,4140 Ends:Square Ends/Plain Ends (straight cut, saw cut, torch cut),Beveled/Threaded Ends Packing:Bundle or bulk , wooden case or other seaworthy packingor for the client's requirement Usage:For mechanical engineering For mechanical and pressureuse,and also for transporting steam,water.gas and etc. ASTM A519 Seamless steel pipe . Alloy seamless steel pipe.