Qingdao Wuxiao Group can furnish every type of Electric power transmission Monopole tower&mast. It is made of tubular steel, also named singel pipe tower. It has tha advantages of used little space and with economic cost. Now it is widely welcomed and usde by our customer overseas. Welded requirements: 1 We used CO2 welding and submerged arc auto welding or other methods. 2 Welded seam shall be full penetration and grinded. 3 The welded product has no fissure, scar, overlap, layer or other defects. Galvanization: All components are dip-hot galvanized with uniform. Certification: We also supply Factory accept test, Warranty certification, Certificate of product quality Certification of Quality Management System Our all products are in conformity with GB/T19001-2000idt ISO9001:2000.