... and pipesLow-medium pressure boiler pipe 10#,20#,16Mn<Q345A.B.C.D.E>GB3087-20088-1240OD*1-200WTFor ... 10#,20#,ASTM A106A,B,C,A53A,B 16Mn<Q345A.B.C.D.E>GB/T8163-2008ASTM A106/A538 ... pipesStructure steel pipe 10#,20#,45#,27SiMnASTM A53A,B16Mn<Q345A,B,C,D,E>GB/T8162-2008GB/T17396-1998ASTM ... and conveying the low pressure fluidSpiral welded pipeQ235A-B,Q345A-ESY/T5037-2000219OD-2820*4-20WTFor conveying the low ...