... LSAW,Seamless 5)Standard:ASTM,ANSI Typeapi 5l gr.b sch 40SizeSeamless Pipe: 1/2”~48”, DN15~DN1200 ... A53GRB,A53-A,A106-A,A192,A226,A315-B,A106-B,A178-C,A210-A-1,A210-C, ... in advance , the balance against with the copy of B/L) Equipment Quality Control: Our products :carbon steel ... XXSFlangeType:welding neck flange, slip-on flange, blind flange,socket weld flange.lap-joint flange, threaded flange. ring type ...