standard:BS1387,GB5310-1995,GB3087-1999,GB/T8163-1999,GB/T8162-1999
Grade:10#,20#,45#,16Mn,A53(A,B),A106(B,C),st37,st52,Q235,Q345,Q195
WT:1.2-10mm
OD:16-219mm
section shape:round