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Function: Using lift form inclination to improve rub bond stress can reach better fixed effect of the expansion screw anchor. Expansion bolt type specification45, 50, 60, 70, 80, expansion bolts grade and its materials can be mainly classified as austenite A1, A2, A4, martensite and ferrite C1, C2, C4. For example, A2-70, "--" represents bolt material and 70 represents strength grade. The following is the full expansion bolt specification table. Bolt materials commonly are Q215, Q235, 25 and 45 steel. For important or special purpose of threaded connection15Cr, 20Cr, 40Cr, 15MnVB, 30CrMrSi, alloy steel with high mechanical properties would be good choice.
Specification
M6
M8
M10
M12
M14
M16
M18
M20
Length
50
60
70
80
100
150
90
125
120
180
65
200
95
110
145
250
300
130
Part of the specification parameter list:
Thread specifications
Nominal length L
Expand tube size
Installation sizea
Drilling size
Connected pipe
Allowed static load
d
b
(Commonly used specification)
Diameter D
Length L1
(Reference)
Diameter
Deepth
Max thickness L2
Stretching resistance
Shearing resistance
(mm)
(N)
35
65, 75, 85
10
3
10.5
40
L-50/-
2350
1770
80, 90, 100
12
45
12.5
L-62/-
4310
3240
95, 110, 125
14
55
14.5
L-75/L-83
6860
510
52
110, 130, 150
18
4
19
75
L-90/L-100
10100
7260
150, 175
22
23
L-122/L-135
19020
14120
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