Description
Expansion bolts are a type of fastener composed of a head and a screw (a cylindrical body with external threads), which need to be used in conjunction with a nut to fasten and connect two parts with through holes.
The grades of expansion bolts are classified as 45, 50, 60, 70 and 80. The allowable stress of threaded connection parts is related to factors such as the nature of the load (static or variable load), whether the connection is tightened, whether the preload needs to be controlled, and the material and structural dimensions of the threaded connection parts. When in use, first drill holes of the corresponding size on the fixed body with an impact electric drill (hammer), then insert the bolts and expansion tubes into the holes, and tighten the nuts to make the bolts, expansion tubes, installation parts and the fixed body expand into one. After being tightened, it will expand. There is a large end at the tail of the bolt. Outside the bolt, there is a round pipe slightly larger than the diameter of the bolt. There are several openings at the tail part. When the bolt is tightened, the tail of the large end is brought into the opened pipe, causing the pipe to expand and achieve the purpose of expansion. Then, the bolt is fixed to the ground or wall to achieve the purpose of rooting. The principle of an expansion bolt is that after driving an expansion bolt into a hole on the ground or wall, the nut on the expansion bolt is tightened with a wrench. The bolt moves outward while the metal sleeve on the outside remains stationary. As a result, the large end at the bottom of the bolt expands the metal sleeve, filling the entire hole. At this point, the expansion bolt cannot be pulled out
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Specializing in the production of various conveyor belts, conveying machinery, and accessories, the company is committed to delivering efficient and reliable material handling solutions to global customers. Its products are widely used in industries such as metallurgy, mining, building materials, power generation, chemical, ports, and grain, helping enterprises achieve automated and intelligent production processes.
Customized Process
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To meet diverse industry needs, our products are categorized into multiple specifications based on material handling requirements and operational environments:Standard, Heat-Resistant, Acid/Alkali-Resistant, Oil-Resistant, Cold-Resistant, and Flame-Retardant types.
Goods will be strictly tested before delivery, please check carefully after receiving the goods, if there is any problem, please contact us in time.
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Provide custom drawings
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Can you accept small quantities?
Yes, accept small quantity, fast delivery
Do you have pre-shipment inspection procedures?
Yes, we always test the products before delivery.
Can I take samples for testing?
Yes, samples can be sent for testing before bulk ordering.
When is the delivery time?
Inventory orders within 7-15 days, for oem and odm orders, the specific time depends on the actual situation.
What are the terms of payment?
Wire transfer or letter of credit, Western Union, Alipay, etc.
What is the minimum order quantity?
It depends on the product.
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The company specializes in the production and sales of fasteners, mainly engaged in standard parts such as bolts, nuts, screws, washers of various specifications, as well as non-standard fasteners customized according to customer needs.
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East of Hebeipu Village, Linmingguan Town, Yongnian District, Handan City, Hebei Province
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