1*unbonded P.C.strand Dia.(mm):12.0;15.0;15.24;15.70 2*P.C. wire bunch Dia(mm):12.0;15.0(7*5) 3*polythylene plastic, grease

Post-tensioned unbonded prestressed concrete bar is suitable for cast-in-place concrete of long-span and wide buildings, large load prefabricated beam and other construction.

No need leaving room for future expansion and no need grouting, convenient construction, material-saving, bended easily, etc. 

1) unbonded P.C.strand Nor.Dia.(mm):Φ12.0;Φ 15.0;Φ15.24;Φ15.70

2) unbonded P.C. wire bunch Nor. Dia(mm):Φ12.0;Φ15.0(7Φ5)

Specification	Tensile strength(Mpa)	Section   area  (mm²)	Grease mass per meter (g/m)	Minimum thickness of coat(mm)	Friction factor (μ)	Effect modulus(K)	Mass per meter (kg/m)
1×7-Φ12.70	1720	98.7	43	0.8	0.04-0.1	0.003-0.004	0.875
	1860
	1960
1×7-Φ15.20	1570	140	50	1	0.04-0.1	0.003-0.004	1.21
	1670
	1770
	1860
	1960
1×7-Φ15.24	1860	140	50	1	0.04-0.1	0.003-0.004	1.21