Prestressed concrete steel wire is made of the steel wire with high quality high carbon steel wire after pickling, phosphating after cold drawing or stabilization treatment. In China, the scientific research level, design theory and method, construction method and construction equipment of steel wire technology for prestressed concrete have been improved day by day, and the application field has been expanded.
The raw material is mainly SWRH82B high-quality carbon steel wire rod or SWRH77B high quality carbon steel wire rod .
Single-storey and multi-storey houses, highway and railway Bridges, sleepers, electric poles, pressure water pipes, storage tanks, water towers, etc. High-rise buildings, underground buildings, high-rise structures, hydraulic structures, Marine structures, airport buildings (runways and terminals), nuclear power plant pressure vessels and other aspects of the super high-rise, super span, super volume, super area, super load and other industries, a variety of shapes, different functions of the structural engineering.
The main standards in China are:
GB/T 5224-2014 Steel strands for prestressed concrete (under revision in 2021)
GB/T 33363-2016 prestressed hot dip galvanized steel strand
GB/T 21073-2007 Epoxy coated steel strand wires
JG/T 161-2016 Unbonded prestressed steel strand
Foreign standards are as follows:
ASTM A416 / A416M-18 7-wire Steel strand for prestressed Concrete
British BS 5896:2012
Japan's JIS G3536
The European Union EN 10138-3
Anz the AS/NZS 4672
Brazil NBR - 7483
Our company has passed ISO 9001 and ISO/TS 16949 quality management system certification, all the raw materials and semi-finished products are tested and recorded. Every step from raw material to finished products can be traced.
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