Unbonded PC strand-Unimetal International Corporation

Unbonded PC strand

Unbonded PC strand is prestressed concrete wire strand with corrosion-resistant lubricating grease or wax, and polyethylene sheathing (HDPE).It has the characteristics of no need to reserve holes, easy construction, saving bellows materials, and random bending.

Tel：+86-15801458265

Email：irisgao@unimetal.com.cn

Key words： Unbonded PC strand

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Un-bonded PC Strand

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DESCRIPTION

Unbonded PC Strand is a prestressed steel cable coated with a corrosion-resistant layer (e.g., grease or wax) and encased in a protective plastic sheathing. Unlike bonded strands, it remains isolated from surrounding concrete, allowing free movement during tensioning. Widely used in post-tensioned concrete structures for enhanced flexibility, durability, and resistance to environmental stress.

The specifications is conforming with JG 161-2004. Steel is in accordance with GB/T5224-2014, or EN10138/BS5896,or ASTM A416, or other standards clients require. Sheathing: GB 11116,GB/T9341. Grease: JG3007-1993.
Tensile Strength:1670Mpa, 1700Mpa, 1770Mpa, 1820Mpa and 1860Mpa etc.
Diameter: 9.50mm-17.80mm
Structure: Commonly 1x7 wire.
Application:
PC steel strands unbonded are mainly used for prestressed steel structure and construction of cable-stayed bridges.

Advantages: Its application in recoverable anchor cables saves a lot of cost for engineering projects.

Common Specifications

Standard	Unbonded pc strand			Weight of oil (g/m) Not less than	Thickness of PE (mm) Not less than	Friction factor u	Coefficient of effect on friction(K)
	Nominal diameter (mm)	Area of section (mm)	Tensile strength (MPa)
JG161-2004	9.5	54.8	1720	32	0.8	0.04-0.10	0.003-0.004
			1860
			1960
	12.7	98.7	1720	43	1	0.04-0.10	0.003-0.004
			1860
			1960
	15.24	140	1570	50	1	0.04-0.10	0.003-0.004
			1670
			1720
			1860
			1960
	15.7	150	1770	53	1	0.04-0.10	0.003-0.004
			1860

HDPE Coated PC Strand for Construction

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