seamless steel pipe 1.low price 2.high quality 3.good after-service seamless steel pipeProduct name seamless steel pipeStandards BS1387,GB5310/1995,GB3087/1999,GB/T8163/1999,GB/T8162/1999GB/T8162,GB/T8163,ASTMA106/2006,ASTMA312/2001,ASTMA53/2007ASTMA182/2001,API5CT,API5L,DIN1626 Thickness from 0.5mm to 30mm Packaging Light varnish,black oil,bundles wrapped with strong steel trip,caps on two ends ...