Product Details

Fire Resistant Steel Cord Belt, Coal Mine Steel Cord conveyor Belt, Anti-Tear Steel Cord conveyor Belt Manufacturer

1. Applications

Fire resistant steel cord conveyor belt is suitable for general uses, such as coal washing plants on the ground, power plants, and non-coal mines under ground. It should meet requirements of electrical and fire safety properties.

2. Physical Properties of Rubber Cover

Grade	Tensile Strength/Mpa ≥	Breaking Elongation/% ≥	Abrasion Loss/mm³≤
H	20	400	200
D	18	400	120
L	15	350	200
Note:Grade H-used for highly-sharp working conditions.Grade D-used for highly-abrasive working conditions.Grade L-used for general working conditions.

After-aging properties of rubber cover(70℃×7d):

Change rate of tensile strength & breaking elongation: -25%~+25%.

3. Adhesion

a. Adhesion between rubber cover and belt core: ≥12N/mm.

b. Adhesion of steel core (N/mm)

Belt type	630	800	1000	1250	1600	2000	2500	2800	3150	3500	4000	4500	5000	5400
Before- aging, ≥	60	70	80	95	105	105	130	135	140	145	150	165	175	180
After- aging, ≥	55	65	75	90	95	95	120	125	130	140	145	160	170	175

4. Specification

Specification of steel cord conveyor belt

Belt type	ST630	ST800	ST1000	ST1250	ST1600	ST2000	ST2500	ST2800	ST3150	ST3500	ST4000	ST4500	ST5000	ST5400
Min. tensile strength (N/mm)	630	800	1000	1250	1600	2000	2500	2800	3150	3500	4000	4500	5000	5400
Max. diameter of steel cord (mm)	3.0	3.5	4.0	4.5	5.0	6.0	7.2	7.6	8.1	8.6	8.9	9.7	10.9	11.3
Min. breaking force of steel cord (kN)	6.93	8.8	13.2	16.5	21.12	26.4	41.25	45.9	51.98	57.70	66.00	79.20	93.50	101.0
Steel cord pitch (mm) (±1.5)	10	10	12	12	12	12	15	15	15	15	15	16	17	17
Top cover thickness (mm)	5	5	6	6	6	8	8	8	8	8	8	8	8.5	9
Bottom cover thickness (mm)	5	5	6	6	6	6	6	6	8	8	8	8	8.5	9
Belt width	Number of steel cord
800	75	75	63	63	63	63	50	50	50	50
1000	95	95	79	79	79	79	64	64	64	64	64	59	55	55
1200	113	113	94	94	94	94	76	76	76	77	77	71	66	66
1400	133	133	111	111	111	111	89	89	89	90	90	84	78	78
1600	151	151	126	126	126	126	101	101	101	104	104	96	90	90
1800		171	143	143	143	143	114	114	114	117	117	109	102	102
2000			159	159	159	159	128	128	128	130	130	121	113	113
2200			176	176	176	176	141	141	141	144	144	134	125	125

5. Safety property

Item	Fire resistant grade
	K₂	K₃
Duration of flame	Total value of flame duration of 6 samples with covers, not more than 45s, any single value not more than 15s.	Average value of flame duration of 3 samples with covers, not more than 60s.
Static conductive properties	≤ 3×10⁸Ω
Reappearance of flame	not allowed in any sample

Huayue started business by producing rubber belts since 1982. It has been one of Solid Woven Conveyor Belts manufacturers and is the major factory of fabric conveyor belt and Steel Cord Conveyor Belt in China.