Strength Grade:8.8S,10.9S,12.9S
is a bolt used to connect steel structures with excellent torsional shear properties. It is often used to connect structural members such as beams and columns to provide solid support and resistance to torsion. This bolt is made of high-strength steel and can withstand lateral and torsional forces, ensuring the stability and safety of the connection.
There are two types of steel structure bolts, one is steel structure large hexagonal head bolt connection pair, and the other is steel structure torsion shear type bolt connection pair (Torsional shear type high-strength bolt connection pair for steel structure), referred to as It is a steel structure large hexagonal head bolt or a
Strength Grade:8.8S,10.9S,12.9S
Surface treatment:Hot-dip galvanizing,DACROMET Coating
M12-M30
size=screw diameter d*thread length L
Default matching: 1 bolt + 1 flat washer + 1 nut
|
M16 |
M20 |
(M22) |
M24 |
(M27) |
M30 |
||
|
P |
2 |
2.5 |
2.5 |
3 |
3 |
3.5 |
|
|
30 |
37 |
41 |
44 |
50 |
55 |
||
|
K |
10.75 |
13.9 |
14.9 |
15.9 |
17.9 |
20.05 |
|
|
9.25 |
12.1 |
13.1 |
14.1 |
16.1 |
17.95 |
||
|
Z |
17 |
19 |
21 |
23 |
24 |
25 |
|
|
11.3 |
14.1 |
15.6 |
16.9 |
19.3 |
21.4 |
||
|
11 |
13.8 |
15.3 |
16.6 |
18.7 |
20.8 |
||
steel structure bolts are generally 10.9S and 12.9S. Take 10.9S as an example
※ nominal tensile strength 1000MPa,
※Min tensile strength Greater than or equal to 1040MPa
※Nominal yield strength 900MPa
※Min yield strength 940MPa
This Large Size Hex bolt is generally treated with oxidation and blackening. To prevent hydrogen embrittlement, it cannot be cold-dip galvanized or hot-dip galvanized because the temperature during the hot-dip galvanizing process is above 520 degree , and the return of heat treatment on high-strength bolts is The fire temperature is generally lower than 500 degree , so hot-dip galvanizing will seriously reduce the mechanical properties of steel structure bolts. If there are high anti-rust requirements, it is more ideal to use Dacromet treatment instead! Nuts and washers are phosphated.
|
10.9S 12.9S high strength material Forged with high-strength materials and heat treatment process, it has a higher load ratio
|
|
|
|
owns Compact texture, uniform force, high anti-slip coefficient
|
|
45# steel
|
|
|
The heads of Bolts are smooth and even, and when used with a torsion shear wrench, construction is more labor-saving.
|
|
10.9 12.9 grade Torsional shear type high strength bolt is suitable for beam-column links, web links of steel structures, and heavy-duty crane beam links of industrial plants, etc.
תגיות פופולריות:
You Might Also Like
שלח החקירה