ERW Steel Pipe En 10219, En 10217, En10224, ASTM A53, A106, API, JIS G3444
Quick Details: Standard: JIS G 3444 Carbon steel tubes for general Structure Steel grade: STK290, STK400, STK490, STK500, STK540 Out-diameter: 4mm-80mm Wall thickness: 0.5mm-13mm JIS G3444 struct...