H.D.G pipes O.D:12mm~720mm W.T:0.5mm~30mm Our purpose:reputation ... ,low price,good service. We have all specifications of H.D.G pipe.Note:We can offer the third party inspection ... .The detailed specifications of H.D.G pipe Length6m~12mMaterial10#,20#,45#16Mn,A53(A ... ,B),STP A22,Q235,Q345,Q195,Q215,StandardBS1387,GB/T8163-1999, ...