In order to prevent and curb the construction of casualties, Hebei Province recently issued the “Review of Implementation Plan for Special Renovation of Construction Safety in 2014 and Prevention of Building Collapse Accidentsâ€.
The special remediation highlights include construction hoisting equipment, excavation and support of foundation pits, tall formwork support systems, and scaffolding.
Among them, for a deep foundation pit project with a relatively large scale that exceeds a certain scale, the construction unit should organize experts to conduct demonstrations on the special program. During the construction period, special personnel should perform monitoring and monitoring of the deformation of the foundation pit.
According to the requirements of the plan, from May to August, the main responsibility of the project construction entity will carry out a complete self-check and self-correction of the project it has built.
From September to October, the competent department of construction at all levels will supervise and inspect the key enterprises and key projects in their respective jurisdictions on the basis of self-examination and self-correction of enterprises and projects. The Provincial Office of Housing and Construction will check the entire province.
At the same time, Hebei Province will increase penalties for violations of production safety. If failure to implement special rectification requirements results in significant accident hazards and causes casualties, it shall be dealt with according to law.
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Other Track Bolt styles
Materials: Steel Q235, 35#, 45#; Alloy Steel 40Cr, 42CrMo, 35CrMo
Grade: 4.6/4.8/5.6/5.8/8.8/10.9/12.9, AREMA Gr5/Gr8
Standard: AREMA, UIC, DIN, BS, GOST, NF, JIS, GB/TB, AS or required specification from clients
Type: Fish Bolt/ Frog Bolt/ Clip Bolt/ Clamp bolt
Surface: Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro coating
Most popular bolt:
Fish bolts with button head and square head are most popular, with specifications as below:
Type |
Button head oval neck fish bolt |
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Button head diamond neck fish bolt |
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Square head fish bolt |
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Grade |
4.6 |
5.6 |
8.8 |
10.9 |
Material |
Q235 |
35# |
45# |
40Cr |
Mechanical properties |
Tensile strength:≥400Mpa |
Tensile strength:≥500Mpa |
Tensile strength:≥800Mpa |
Tensile strength:≥1000Mpa |
Yield strength:≥240Mpa |
Yield strength:≥300Mpa |
Yield strength:≥640Mpa |
Yield strength:≥900Mpa |
|
Elongation:≥22% |
Elongation:≥20% |
Elongation:≥12% |
Elongation:≥9% |
|
Cold bending:90 degree without crack |
Cold bending:90 degree without crack |
Cold bending:90 degree without crack |
Cold bending:90 degree without crack |
|
Surface |
Plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing |
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Standard refers |
AS, BS 64, DIN, AREMA/SAE,NF,JIS |
Accessories
* Nut:
Type: square nut/heavy square nut/hex nut/heavy hex nut/flange nut/slotted nut/lock nut/wrench nut, etc.
Material:Steel Q235, 35#, 45#; Alloy Steel 40Cr, 42CrMo, 35CrMo
Grade: 4/5/8/10/12, AREMA ,SAE J995
Surface: Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro coating
*Spring washer
Material: 65MN/60Si2Mn
Grade: AREMA 1967/ GB
Surface: Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro coating
Other bolt styles
*Clip bolt for tension clip
*Clamp bolt for clamp
* Frog bolt for turnout: square head bolt/thin square head drilled bolt/BHON bolt
*Tunnel bolt: Spear bolt/ curved bolt
Crane Through Bolt,Crane Rail Fixing Clips,Rail Clip Bolt,Crane Rail Clip Bolt
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