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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

100

150

150

60

70

80

90

125

120

180

180

65

80

90

100

150

125

200

200

80

90

95

110

 

145

250

250

100

100

100

120

 

150

300

300

 

110

110

130

 

180

 

 

 

120

120

150

 

200

 

 

 

 

130

180

 

250

 

 

 

 

150

200

 

300

 

 


Part of the specification parameter list:

Thread specifications

 Length

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)

M6

35

65, 75, 85

10

35

3

10.5

40

L-50/-

2350

1770

M8

40

80, 90, 100

12

45

3

12.5

50

L-62/-

4310

3240

M10

50

95, 110, 125

14

55

3

14.5

60

L-75/L-83

6860

510

M12

52

110, 130, 150

18

65

4

19

75

L-90/L-100

10100

7260

M16

70

150, 175

22

90

4

23

100

L-122/L-135

19020

14120