M5 M6 Stainless steel L Type and J Type with nut washer assortment
SUS304 SUS316 A2-70 A4
Product Description:
Uses
1,Fixed footbolt is also called short footbolt, it is poured
together with the foundation and used to fix the equipment without
strong vibration and shock.
2,Activity foot bolt also known as long foot bolt, is a kind of
removable foot bolt, used to fix the work of strong vibration and
shock of heavy machinery and equipment.
3,Expansion anchor anchor bolt is often used to fix the static
simple equipment or auxiliary equipment. Expansion anchor anchor
bolt installation should meet the following requirements: the
distance from the bolt centre to the edge of the foundation is not
less than 7 times the diameter of the expansion anchor anchor bolt;
installation of expansion anchor anchor bolt foundation strength
shall not be less than 10MPa; drilling holes shall not be cracked,
and attention should be paid to preventing the collision of
drilling bit with the reinforcement bars in the foundation and the
embedded pipe; the diameter and depth of drilling holes should be
matched with the expansion anchor anchor bolt.
4,Bonding anchor bolt is a kind of anchor bolt commonly used in
recent years, and its method and requirements are the same
Installation
1,One time burying method: when pouring concrete, bury the ground
bolt. When the tower is controlled by tilting, the anchor bolts
should be buried at one time.
2,Pre-reserved hole method: When the equipment is in place, clean
the holes, put the foot bolts into the holes, and then use
non-shrinkage fine gravel concrete, which is one level higher than
the original foundation, for pouring and compacting after the
equipment is positioned and corrected. The distance from the centre
of the footbolt to the edge of the foundation should not be less
than 2d (d is the diameter of the footbolt) and should not be less
than 15mm (not less than 10mm when d≤20), and not less than half of
the width of the anchor plate plus 50mm, and when it cannot satisfy
the above requirements, appropriate measures should be taken to
strengthen it. The diameter of the anchor bolts for structure
should not be less than 20mm. when subjected to seismic action, it
should be fixed by double nuts or other effective measures to
prevent loosening, but the anchoring length of the anchor bolts
should be increased by 5d compared with that of the non-seismic
action.
Applications
There are two main ways to judge the hardness of steel, which are
Brinell hardness in HB and Rockwell hardness. Firstly, from the
Brinell hardness, will be a hardness higher than the measured steel
ball to the steel above, and apply a force F, then the ball will be
in the measured steel will leave a dent, measured, the area of M,
then Rockwell Brinell hardness will be F/M. Next Rockwell hardness
is also convenient to explain the only difference between the
latter and the former Rockwell hardness measurements is the force
to force to divide by the depth of the small ball plunged into the.
Steel can be improved by mixing it with alloys, for example by
adding carbon, known as carbon steel, which increases its hardness
and rigidity but decreases its toughness and plasticity. By adding
chromium, the hardness and rigidity of steel can be increased with
less effect on its toughness. By adding titanium, the hardness and
toughness of steel is increased.
The properties of steel can vary after different types of
processing, with a focus on quenching and tempering, two of the
earliest forms of steel processing that I learnt about as a child,
both of which I learnt about through the game Ride and Slash.
Firstly, quenching is the process of heating steel to over 723
degrees and then soaking it in water for a rapid cool down to
increase the hardness and decrease the malleability of the steel.
Tempering means heating the steel to over 723 degrees and then
cooling it slowly to increase its strength and toughness at the
same time.
| No. | C% | Cr% | Ni % | Mo % |
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
| 304L | 0.03 | 18-20 | 8-12 | / |
| 316L | 0.03 | 16-18 | 10-14 | 2-3 |
| 321 | 0.08 | 17-19 | 9-12 | / |
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