11 years experience in plant design and construction
Common choice of 1875 sets of steel structure buildingsNational service hotline:
0757-81002668
11 years experience in plant design and construction
Common choice of 1875 sets of steel structure buildingsNational service hotline:
0757-81002668Torsional shear type high strength bolt
GB/T 3632~363 Steel structure adopts high strength torsional shear bolt type Size
Functions: torsional high strength shear type is the advanced large hexagonal high-strength bolt and high strength bolt, belonging to a kind of standard parts. After first tight and end tight construction, it is generally used for permanent connection.
Application: suitable for railway and Highway Bridge, boiler steel structure, industrial buildings, high-rise buildings, tower mast structure, hoisting machinery and other friction type high strength bolt connection.
|
Thread specifications -d |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 | |
|
Screw pitch P |
2 |
2.5 |
2.5 |
3 |
3 |
3.5 | |
|
da |
max |
18.83 |
24.4 |
26.4 |
28.4 |
32.84 |
35.84 |
|
ds |
max |
16.43 |
20.52 |
22.52 |
24.52 |
27.84 |
30.84 |
|
min |
15.57 |
19.48 |
21.48 |
23.48 |
26.16 |
29.16 | |
|
dw |
min |
27.9 |
34.5 |
38.5 |
41.5 |
42.8 |
46.5 |
|
dk |
max |
30 |
37 |
41 |
44 |
50 |
55 |
|
k, |
nom |
10 |
13 |
14 |
15 |
17 |
19 |
|
max |
10.75 |
13.9 |
14.9 |
15.9 |
17.9 |
20.05 | |
|
min |
9.25 |
12.1 |
13.1 |
14.1 |
16.1 |
17.95 | |
|
k' |
min |
12 |
14 |
15 |
16 |
17 |
18 |
|
k" |
max |
17 |
19 |
21 |
23 |
24 |
25 |
|
r |
min |
1.2 |
1.2 |
1.2 |
1.6 |
2 |
2 |
|
db |
max |
11.3 |
14.1 |
15.6 |
16.9 |
19.3 |
21.4 |
|
min |
11 |
13.8 |
15.3 |
16.6 |
18.7 |
20.8 | |
|
dc ≈ |
12.8 |
16.1 |
17.8 |
19.3 |
21.9 |
24.4 | |
|
de ≈ |
13 |
17 |
18 |
20 |
22 |
24 | |
Mechanical behavior:
|
Grade |
Tensile strength |
Yield strengthσ0.2 |
Elongation δ5 |
Shrinking percentage Ψ |
|
σь |
Mpa |
% |
% | |
|
Mpa |
min | |||
|
10.9S |
1040~1240 |
940 |
10 |
42 |
|
8.8S |
830~1030 |
660 |
12 |
45 |
Loading force:
|
Thread specifications-d |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 | |
|
Pressed force section mm2 |
157 |
245 |
303 |
353 |
459 |
561 | |
|
Pull force KN |
10.9S |
163~195 |
255~304 |
315~376 |
367~438 |
477~569 |
583~696 |
|
8.8S |
130~162 |
203~252 |
251~312 |
293~364 |
381~473 |
466~578 | |
Materials for steel bolt and nut, flat pad:
|
Type |
Performance level |
Thread specifications |
Materials |
|
Bolt |
10.9S |
M12~M24 |
20MnTiB |
|
M27~M30 |
35VB | ||
|
8.8S |
M12~M16 |
35# | |
|
M20~M24 |
20MnTiB | ||
|
M27~M30 |
35VB | ||
|
Nut |
8H 10H |
M12~M30 |
35# |
|
Washer |
35~45 HRC |
12~30 |
45# |
Chemical component:
|
Materials |
C% |
Si% |
Mn% |
Ti% |
V% |
B% |
P% |
S% |
|
20MnTiB |
0.17~0.24 |
0.17~0.37 |
1.30~1.60 |
0.04~0.10 |
0.0005~0.0035 |
≤0.035 |
≤0.035 | |
|
35VB |
0.31~0.37 |
0.17~0.37 |
0.50~0.90 |
0.05~0.12 |
0.001~0.004 |
≤0.04 |
≤0.04 | |
|
35# |
0.32~0.40 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 | |||
|
45# |
0.42~0.50 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 |
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