... ,Q235,10#,20#,A106,A53 TypeScaffolding steel tube/scaffolding tube/scaffold pipeThickness1.0-4.0mmOuter diameter42mm,48mmLengthMax 16metersZinc ... ASME , EN , DIN ,GB, JISMaterialQ195 , Q215 ,Q235 , Q345ApplicationPetroleum, power,gas metallurgy, papermaking, chemical, medical equipment, aviation, boiler heat, exchanger ... contact cathy 0086-138-2198-3141 Scaffolding steel tube from factory price!!! 2