| Customization: | Available |
|---|---|
| Grade: | 8.8 |
| Material: | Carbon Steel |
|
Still deciding? Get samples of US$ 0.3/Piece
Order Sample
|
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Elevator expansion bolt is a fastener specially designed for elevator installation, which is mainly used to fix elevator parts (such as guide rails, supports, etc.) in hard substrates such as concrete and masonry. Its characteristics and applications are as follows:
I. Characteristics
1 High carrying capacity
The design needs to meet the dynamic load (such as vibration, shock) during the operation of the elevator, with high tensile and shear strength to ensure long-term stability.
High-strength steels (e.g. 8.8, 10.9) or stainless steel (e.g. 304/316) are typically used to withstand heavy loads and frequent stress changes.
2 Seismic anti-loose design
The structure may contain locking washers, double nuts or chemical glue to prevent bolts from loosening due to vibration and ensure safe operation of the elevator.
3 Corrosion Resistance
Surface treatment processes (e.g., galvanized, dacromet) or direct use of stainless steel, suitable for humid environments (e.g., well) or chemical corrosion scenarios.
4 Easy Installation
Embedded or rear-reaming installation can be completed with standard tools (such as torque wrenches) to reduce construction complexity.
Some products support "tap" expansion without complex operations.
5 Strong adaptability
Different substrates can be matched (the concrete strength grade usually requires ≥C20), and the aperture and burial depth are optimized to ensure the anchoring effect.
Ii. Application scenarios
1 The elevator guide rail is fixed
To fix the guide rail to the well wall or bracket, the bolts must have high precision positioning ability and anti-lateral force characteristics.
2 Install the support structure
A support beam or bracket used to hold the elevator car, counterweight device, and withstand a combination of vertical and horizontal loads.
3 Secure the safety components
The installation of critical safety devices such as speed limiters, buffers and safety clamps must be absolutely reliable to prevent failure.
4 Ancillary equipment in the well
Smaller expansion bolts are usually used to fix cable supports, lighting equipment, and maintenance platforms.
5 Elevator renovation and maintenance
When an old elevator is upgraded, it is used to replace corroded or aging bolts, or to reinforce new components.
Iii. Precautions
1 Strictly follow the installation specifications: Ensure that the diameter, depth and cleanliness of the drilling hole meet the requirements to avoid the deterioration of the anchoring force.
2 Torque control: Tighten with a torque wrench to prevent over-tightening (causing cracking of the substrate) or over-loosening (reducing the bearing capacity).
3 Regular inspection: Especially in the annual inspection of the elevator, it is necessary to check whether the bolts are corroded, loosened or deformed.
4 Environmental adaptation: In humid or high temperature environments, corrosion or high temperature resistant materials (such as 316 stainless steel) should be selected.
Iv. Summary
Elevator expansion bolt is one of the core components of elevator safe operation, its high reliability design is directly related to the safety of passengers and equipment life. It is necessary to consider the load type, environmental conditions and compliance (such as EN 15129 standard) when selecting, and strictly follow the installation guide to ensure that nothing is wrong.
|
item
|
value
|
|
Color
|
yellow
|
|
Finish
|
Bright(Uncoated)
|
|
System of Measurement
|
Metric
|
|
Place of Origin
|
Hebei,China
|
|
Brand Name
|
Yuetong
|
|
Model Number
|
Elevator Expansion Bolts
|
|
Material
|
Steel
|
|
Diameter
|
12mm
|
|
Product name
|
Elevator Expansion Bolts
|
|
Material
|
carbon steel
|
|
Surface treatment
|
Zn- Plated
|
|
Grade
|
4.8/ 6.8/ 8.8
|
|
Size
|
M6-M24
|
|
Packing
|
Carton+pallet
|
|
Delivery time
|
15-30days
|
|
MOQ
|
1Ton
|
|
Sample
|
Availabe
|
|
Port
|
Tianjin Port
|
1. Good after-sales service. Any small problem happening will be solved at the most prompt time;
2. Many years of export experience;
3. Specifications list is available upon your request;
4. Welcome to send enquiry, we will reply soon;
5. Prompt shipment with professional documents;
6. Custom packing, with photo before shipment;
7. High quality and competitive price.
HEBEI YUETONG FASTENERS MANUFACTURING CO.,LTD is located in Yongnian fasteners centre which isChina's largest fasteners production base.
Our factory was setted up in 1991.We have several sets of advanced equipments, adopt advanced modern management and use high quality Iron to produce high quality products. The products sold throughout the domestic and exported to Southeast Asia and Europe and other countries and regions. Meanwhile,our products win good reputation with domestic and foreign customers.
Our company mainly produces: all kinds of flat washers, spring washers, expansion screws, flange nuts and bolts, hex bolts and nuts, sleeve anchor, fundation bolts, and thread robs with DIN, BSW, ANIS,.And we also provide the OEM. As we are manufacturing factory, so we can give you the best quality and the good price.
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before
HEBEI YUETONG FASTENERS MANUFACTURING CO.,LTD
Contact Person: nina
){kind=link}