prestressing materials for use in prestressing concrete; namely, metal anchorages, metal couplers, metal sheaths, and metal strand

'anchorag':10 'concret':7 'coupler':12 'materi':2 'metal':9,11,13,16 'name':8 'prestress':1,6 'sheath':14 'strand':17 'use':4

prestressing equipment for use in the prestressing of concrete; namely, power jacks, pumping units comprised of motors, drives, oil pumps, valves and gauges, strand pushing machines and grouting machines

'compris':15 'concret':9 'drive':18 'equip':2 'gaug':23 'grout':28 'jack':12 'machin':26,29 'motor':17 'name':10 'oil':19 'power':11 'prestress':1,7 'pump':13,20 'push':25 'strand':24 'unit':14 'use':4 'valv':21

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