... Q235 5)high quality company nameLiaocheng Yunhe Material Co.,Ltdbusiness type manufacturer and exporteroutside diameter 8-450mmwall thickness1-60mm usageScaffolding pipe ... , power station , centrastation, shiping milit ary , chemical industry ,environment protection , traffic,food industry ,medicalequipment and so on .8 Standard: ASTMAA106Gr.A ...