M5 M6 Stainless steel U TYPE SHAPE Bolt with nut washer assortment
SUS304 SUS316 A2-70 A4
Product Description:
U-shape is generally used in cargo vehicles, it is used to
stabilise the chassis and frame of the vehicle. For example, the
steel plate spring is U-bolt to connect.
U bolts are widely used, the main use: construction and
installation, mechanical parts connection, vehicles and ships,
bridges, tunnels and railways.
Main shapes: semi-circular, square right angle, triangle, oblique
triangle, etc.
1. Material properties, density, bending strength, impact
toughness, compression strength, modulus of elasticity, tensile
strength, temperature resistance, colour according to the use of
the environment.
2. Materials commonly used are carbon steel Q235A Q345B alloy steel
stainless steel and so on. Among the stainless steel materials are
201 304, 321, 304L, 316, 316L.
3. National standard of U-bolt: JB/ZQ4321-2006.
4.Material
U-bolt according to the material points are carbon steel Q235, Q345
alloy steel, stainless steel 201 304 316, etc., that is, carbon
steel and stainless steel.
Applications
U-bolt heat tightening is suitable for what occasions
Thermal tightening is the internal control of the medium
temperature requirements of the pipeline bolts, in addition to the
construction of the fastening, the need to reach a constant
temperature or different temperatures in a process of work and then
the fastening. And in normal use, the temperature rises, the bolt
is subjected to thermal expansion, the gap increases, the need to
complete the sealing from zero by hot tightening operation....
In general, the requirements of the internal temperature > 200 ℃
in the equipment, pipelines, etc., need to bolt fastening heat
tightening.
Hebei Wanxin Fastener Manufacturing Co., Ltd, the main production
of products are: U bolts, steel bolts, ground bolts, flange,
double-headed bolts, highways, railways, underground supporting
fasteners, a variety of pre-embedded parts, high-strength bolts,
high-strength hexagon, scaffolding, through the wire water-stop
screws, high-strength nuts, through the wall wire reinforcing
stirrups,, step by step, the top bracket, butyl threads,
water-stopping steel plate and so on.
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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