Mining Steel Strand

Mining Steel Strand 28.6mm, with a no less than 990 kN breaking force ,could be well used in deep underground roadway roof stabilization ,the application of the product in deep coal mines has advantages such as strong anchoring, which will have a positive effect on improving the safety coefficient of coal mine tunnel support structures, promoting safety production and technological progress in the coal mining industry.

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ADVANTAGES

-Primary advantages

Mining Steel Strand 28.6mm has high load-bearing capacity and deformation resistance, which can be better applied to deep coal mine roadway support engineering below 500 meters and corrosive working environments containing salt and alkali, and can effectively avoid sudden collapse and other malignant accidents caused by the possible instantaneous fracture of surrounding rock

USE

-Where can our Mining PC Strand be used?

Mining PC Strand ,Deep coal mine roadway rock stabilization

SPECIFICATIONS

Structure	Standard	Nominal diameter	Tolerance on Diameter	Nominal Area of Section	Weight of strand	Tensile Strength, Rm	Minimum Breaking load,Fm	0,2% proof force , Fp0.2	Elongation Lo=500mm, Agt	Curvative of strand	Lay Length	The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than
		(mm)	(mm)	(mm2)	(kg/1000m)	(N/mm2)	KN	KN	(%)	mm	mm
1x19W(1+6+6/6)	GB/T5224-2014	28. 6	+0.40,-0.15	532	4229	1720	915	805	3.5	25	(12-18)d	2.5
1x19W(1+6+6/6)	GB/T5224-2014	28. 6	+0.40,-0.15	532	4229	1770	942	829	3.5	25	(12-18)d	2.5
1x19W(1+6+6/6)	GB/T5224-2014	28. 6	+0.40,-0.15	532	4229	1860	990	854	3.5	25	(12-18)d	2.5

Structure

Standard

Nominal diameter

Tolerance on Diameter

Nominal Area of Section

Weight of strand

Tensile Strength, Rm

Minimum Breaking load,Fm

0,2% proof force , Fp0.2

Elongation Lo=500mm, Agt

Curvative of strand

Lay Length

The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than

(mm)

(mm2)

(kg/1000m)

(N/mm2)

(%)

1x19W(1+6+6/6)

JIS G3536

28. 6

+0.60,-0.25

532.4

4229

949

807

3.5

2.5

Structure	Standard	Nominal diameter	Tolerance on Diameter	Nominal Area of Section	Weight of strand	Tensile Strength, Rm	Minimum Breaking load,Fm	0,2% proof force , Fp0.2	Elongation Lo=500mm, Agt	Curvative of strand	Lay Length	The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than
		(mm)	(mm)	(mm2)	(kg/1000m)	(N/mm2)	KN	KN	(%)	mm	mm
Seale Type	GB/T 31314	28. 6	+0.60,-0.25	532	4229	1770	942	829	3.5	25	(12-18)d	2.5
Seale Type	GB/T 31314	28. 6	+0.60,-0.25	532	4229	1810	963	847	3.5	25	(12-18)d	2.5
Seale Type	GB/T 31314	28. 6	+0.60,-0.25	532	4229	1860	990	871	3.5	25	(12-18)d	2.5
Warrington Type	GB/T 31314	28. 6	+0.60,-0.25	532	4229	1770	942	829	3.5	25	(12-18)d	2.5
Warrington Type	GB/T 31314	28. 6	+0.60,-0.25	532	4229	1810	963	847	3.5	25	(12-18)d	2.5
Warrington Type	GB/T 31314	28. 6	+0.60,-0.25	532	4229	1860	990	871	3.5	25	(12-18)d	2.5

Structure	Standard	Nominal diameter	Tolerance on Diameter	Nominal Area of Section	Weight of strand	Tensile Strength, Rm	Minimum Breaking load,Fm	0,1% proof force , Fp0.2	Elongation Lo=500mm, Agt	Curvative of strand	Lay Length	The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than
		(mm)	(mm)	(mm2)	(kg/1000m)	(N/mm2)	KN	KN	(%)	mm	mm
Seale Type	ISO 6934-4	28. 6	-	532	4229	1780	949	778	3.5	25	(12-22)d	2.5
Warrington Type	ISO 6934-4	28. 6	-	532	4229	1780	949	778	3.5	25	(12-22)d	2.5

PACKAGE

As per clients’ requirement