1*7 wire PC strand(Normal or Low Relaxation)

1.Nor.Dia(mm).9.0--17.80 2.Standard: GB/T 5224,GB/T5223(China);ASTM A416,ASTMA421(USA);BS 5896(UN);JIS G3536(Japan);AS/NZS 4672

   

   Technical Standard:   GB/T 5224,GB/T5223(China);ASTM A416,ASTMA421(USA);BS 5896(UN);JIS G3536(Japan);AS/NZS 4672(Australia);NBR-7483(Brazil);EN10138(Europe);ISO934 

   WE can aslo offer PC wire and strand conforming to the technical standards agreed by both the consumer and us.

     The main features of PC steel strand are high strength and good relaxation, being quite straight while streching.

     The product is mainly used as auxiliary reinforced strand for concrete structure. e.g.long spanned bridge's on railway and highway, overhead crane construction,multi-floor industrial building and etc. 

Mechanics properties if steel strand ASTM A416:

Grade	Norminal dia.(mm)	tolerance(mm)	Cross section area(Sn/mm2)	Re.mass per 1000m(kg/1000m)	Minimum Breaking Load	Min Load at 1% Extension(KN)	Lo≥610mm(%)	the relaxation at 1000h)Initial to 70%of nominal max load)(r/%)
								low-relaxation	normal relaxtion
250{1725}	9.53	±0.40	51.61	405	89	80.1	3.5	2.5	3.5
	11.11		69.68	548	120.1	108.1
	12.7		92.9	730	160.1	144.1
	15.24		139.35	1094	240.2	216.2
270{1860}	9.53	+0.65-0.15	54.84	432	102.3	92.1	3.5	2.5	3.5
	11.11		74.19	582	137.9	124.1
	12.7		98.71	775	183.7	165.1
	15.24		140	1102	260.7	234.6