Fire Resistant Steel Cord Conveyor Belt for General Use

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.

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

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

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