Detailed Product Description Name:Seamless steel tubes for liquid service (GB8163-99)The mainly usage: used in the transmission ... A53,ASTM A106,AP25L,API5CT, GB8162, GB8163, GB3087, seamless steel pipe. (2) we also supply an extensive range of steels, such ... as" angles, flat steel, square steel, welded pipe, galvanized pipe, steel mill, hot-rolled steel, I-steel, channel steel, wire ...