【国家标准】 先张法预应力混凝土管桩

This standard specifies product classifications, raw materials and general requirements, technical requirements, test methods, inspection rules, marking, storage and transportation, and product certification of pretensioned spun concrete piles (here after referred to as “Piles”),etc.
This national standard is applicable to pretensioned concrete piles produced by centrifugal molding process for industrial and civil buildings, port, municipal administration, bridge, railway, highway and water conservancy.