H.D.G.Steel pipe(PVC Innerlined): Material:Q235, Q215, Q195 Standard: ASTM A53,BS1387 Certification:ISO9001-2008 H.D.G.Steel pipe(PVC Innerlined) ,1,30years focus on QA2,decades experience of Canton Fair3,ISO 9001 2000Material : Q235(ST37.2)Size : DN12-DN168mmThickness : 1.0mm-5.0mmLength : 5.8m,6m,11.5m,12m or according to the customer`s request E.R.W. pipes or H.D.G.Steel pipe(PVC Innerlined)