79047872
Aug 16, 2007
Single prestressing tensions, flexible wire prestressing tensions (of metal) for prestressed concrete construction, parts of the aforementioned goods
Metal GoodsSingle prestressing tensions, flexible wire prestressing tensions (not of metal) for prestressed concrete construction, parts of the aforementioned goods
Nonmetallic Building MaterialsBuilding construction using pretensioning and wire prestressing methods
Building Construction and Repair