... Section Pipe 1)Standard: ASTM A53/GB/T3091/EN10219/EN10210 2)Material: Q195,Q215,Q235,Q235B,Q345B,Grade A/B ... 2)DN:1/2"-14";WT:0.6-12mm 3)Surface Treatment: Black/Painted ... reason that we work together in the future.2.Application: In structure , water pipes,machine manufacture, architecture industry, the metallurgical industry,the ...