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Editor of Mine I-beam
Mine I-steel is generally referred to as mine steel, which is a kind of I-steel. It is mainly used for support of mine roadway, with wide flange, small height and thick web. It is suitable for mine roadway support.
Catalog
Standard 1
2 Size Specification (mm)
No. 3 and Chemical Constituents
4. Mechanical and technological properties
Standard Editor
YB/T24-1986
Dimension Specification (mm) Editing
Model
Height H
Leg width b
Waist thickness d
Nine
90 S 2.0
76 soil 2.0
8 + 0.6
Eleven
110 + 2.0
90 + 2.0
9 + 0.6
Twelve
120 + 2.0
95 S 2.0
11 + 0.6
Note: 1. The inclination of the outer edge of I-beam should not be greater than 2.4% of the leg width.
2. The bending deflection of I-beam shall not be greater than 1.0 mm.
3. The eccentricity of I-beam should not be greater than 2% of the leg width. Eccentricity: = b2-b1/2
4. The bending degree per meter of I-beam shall not be greater than 3 mm and the total bending degree shall not be greater than 0.3%.
Editor of Brand and Chemical Composition
Model
Brand name
turn
learn
become
branch
C
Si
Mn
P
S
Nine
16Mn
0.16-0.20
0.30-0.60
1.30-1.60
Less than 0.045
Less than 0.050
Eleven
20MnK
0.21-0.26
0.20-0.60
1.20-1.60
Less than 0.045
Less than 0.050
Twelve
Q275b
Q275
0.28-0.37
Less than 0.10
0.15-0.35
0.50-0.80
Less than 0.045
Less than 0.050
Mechanical and Process Performance Editor
Brand name
Power
learn
performance
Technological properties
Yield point s/MPa
Tensile strength b/MPa
Elongation delta 5 (%)
Cold Bending Test 180 Degree
16Mn
More than 345
More than 510
More than 21
D = 2A
20MnK
More than 355
More than 510
More than 18
D = 2A
Q275b Q275
More than 275
490-610
More than 20
D = 3A
Item labels:
Technological Products, Industrial Technologies, Industrial Products
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