Trademark: Mingzhu Packing: Safety Packing Standard: ISO 9001: 2008, ISO 14001: 2004, OHSAS 18001: 2007 Origin: China HS Code: 73089000 Production Capacity: 10000tons/Month Product Description 1. Steels: ASTM A36; ASTM A572 2. Hot-DIP galvanization: ASTM A123 3. Structure: Self-supporting tubular towers,angle steel tower ,Broadcast&TV tower , microwave tower ,roof top tower ,watch out tower , ...