2021 High quality Low Relaxation Seven-Wire Strand For Prestressed Concrete - PC Galvanized (Aluminum) Strand – Silvery Dragon

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We've been committed to offering easy,time-saving and money-saving one-stop purchasing support of consumer for Uncoated Stress-Relieved Steel Wire For Prestressed Concrete , Y1770c 5.0mm Wires , Seven Wire Prestressed Concrete Strand , We believe we will become a leader in developing and producing high quality products in both Chinese and international markets. We hope to cooperate with more friends for mutual benefits.

2021 High quality Low Relaxation Seven-Wire Strand For Prestressed Concrete - PC Galvanized (Aluminum) Strand – Silvery Dragon Detail:

This product is applied to stay cables, main cables and anchoring systems of bridge cable structures, external cables of arch bridge slings and other pre-stressed structures that do not directly contact with concrete mortar. we have participated in the construction of many large cable-stayed bridges in China. The diameter of this product is 12.70mm, 15.20mm, 15.70mm, 17.8mm and it is low relaxation pre-stressed strand. The coated steel wire is further drew and stabilized by heat treatment, then intermediately made to galvanized (aluminum) strand. The strand has no binding, and won’t get loose after cutting. The surface coating is uniform and continuous, and the straightness is good. The mechanical properties meet the requirements of ASTMA416, prEN10138, NFA35-035 and other international standards. The strand has a uniform lay length, which is 12-16 times of the nominal diameter. The coating mass of the single wire is 190~350g/m2. The aluminum content of the zinc-aluminum alloy steel strand coating is not less than 4.2%. The coating adhesion is strong, and the coating is uniform without leakage. The amount of zinc can meet the requirements of A475-09, level A.

Key parameters & reference standards

Nominal Diametermm	Tensile Strength Rm/Mpa	Specifications								Minimum difference between center wire and outer wires mm
		Max. Force KN≥	0.2% Proof Force KN≥	Elongation under Max. Force %	1000h Relaxation(Initial Load 0.7) r / %	Deflective Tensile Coefficient %		Pulsating Tensile Fatigue
						Inhaul Cable	Non Inhaul Cable	Inhaul Cable	Non Inhaul Cable
12.70	1770	175	156	≥3.5	≤2.5	≤20	≤28	Stress Limit 0.45 FmStress Amplitude 300MPa 2.0×10⁶ times No breaking	Stress Limit 0.7 FmStress Amplitude 190MPa 2.0×10⁶ times No breaking	0.08
	1860	184	164
	1960	194	173
15.20	1770	248	221	≥3.5	≤2.5	≤20	≤28			0.11
	1860	260	232
	1960	274	244
15.70	1770	266	237	≥3.5	≤2.5	≤20	≤28			0.12
	1860	279	249
	1960	294	262
17.80	1770	338	301	≥3.5	≤2.5	≤20	≤28			0.15
	1860	355	316
	1960	374	333

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