... .1*2 WIRE,1*3WIRE,1*7 WIRE 3.12.7MM,15.24MM,1860Mpa,1960Mpa 4.anticorrosion ... ,270ksi Technical Standard: GB/T 5224,GB/T5223(China);ASTM A416,ASTMA421(USA); ... . The main features of PC steel strand are high strength and good relaxation, being quite straight while ... for concrete structure. e.g.long spanned bridge's on railway and highway, overhead crane construction,multi ...