Tag Archives: building screw

China OEM Welded Eye Screw Building Material Hardware Fasteners Drywall Screws

Product Description

Building fasteners

Detailed Photos

 

 

 

Product Parameters

 

 

 

Tie nut types

Formwork CHINAMFG nut

Formwork anchor

tie nut

Swivel formwork

tie nut

Water stopper

Steel cone

weight

0.175/0.25/0.3/0.61KG

 

0.16/0.36/0.5/0.6/

0.65/1KG

1.25/1.3KG 

0.18/0.42/0.47/0.52/

0.54kg 

0.33kg/0.58kg.

pull

140-150KN

170-180KN

170-180KN

150-180KN

80-90KN

Process

Casted iron

Surface treatment

Natural,EG,HDG

Heat treatment

depends on customers

Match tie rod

12/17/20MM or customized 

Material

Ductile casted iron QT450-10

Colour

self color (black), silver galvanized or colorful galvanized

 

 

Certifications

 

 

Company Profile

 

HangZhou Shunchen Electromechanical Technology Co., Ltd. Was established on April 28, 2016, with Jiang Xihu (West Lake) Dis.g as its legal representative, a registered capital of 5 million yuan, a Unified Social Credit Identifier of 91371100mA3C9TKL0W, and an address of 001 Complex Building, No. 559, ZheJiang Road, ZheJiang Road Street, Economic Development Zone, HangZhou, ZheJiang Province. Its business scope includes: General projects: Industrial design services; Mold manufacturing; Mold sales; Research and development of metal products; Sales of metal products; Sales of electrical equipment; Wholesale of hardware products; Retail of hardware products; Wire and cable management; Manufacturing of automotive parts and accessories; Wholesale of automotive parts; Retail of automotive parts; Sales of household appliances; Home appliance installation services; Special equipment repair; Electrical equipment repair. (Except for projects that require approval in accordance with the law, business activities shall be carried out independently with the business license in accordance with the law). The current operating status of HangZhou Shunchen Electromechanical Technology Co., Ltd. is an operating (opening) enterprise.

 

Our Advantages

Packaging & Shipping

 

FAQ

 1.  Q:  Are you real factory  ?               

      A: Yes, we are direct factory and we have 3 factories established 

 

 2.  Q:  Do you have customers in our country ?  

      A:  Not sure, Our 100+ customers are from  30+ countries, including  Thailand, Singapore, Russian, Korea, USA,UK,Norway,UAE etc, Just contact us to confirm and experience our service and product directly. 

 

3.  Q:  How about your production and export amount ?   

      A: 19000T/year,  about 70*20ft container per month.

 

4.  Q: How about the price?

     A: Really competitive ! Our company are near the CHINAMFG of steel and we have big order amount, so we get  relatively cheaper price of steel raw material ; low labor cost and near Xin’gang sea port are also our advantages. and the most of all,  “less profit but big turnover ” is our perpetual business principle. 

 

5.  Q: How can we ensure the quality ?

    A : First, Only qualified raw material with certification is acceptable.

       Second,quality check is operated by hand.

       Three, free samples are always available.

       Fourth,once quality problems occur,  just sent us pics for confirmation,

       once confirmed,  money or goods will be given  as compensation.
 

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After-sales Service: 1 Year
Warranty: 1 Year
Application: Machine Parts, Transportation, Decorations
Surface Treatment: No
Technics: Casting
Material: Plastic
Customization:
Available

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eye bolt screw

Can eye bolt screws be customized for specific load capacities or applications?

Yes, eye bolt screws can be customized to meet specific load capacities or applications. Customization allows for the adaptation of eye bolt screws to suit the unique requirements of different industries, environments, and lifting or rigging operations. Here’s a detailed explanation:

Load Capacity Customization:

Eye bolt screws can be customized to accommodate specific load capacities by adjusting their design and material properties. The load capacity of an eye bolt screw is influenced by factors such as the diameter, thread pitch, material strength, and the mode of loading (tension, shear, or bending). By considering these factors, engineers can tailor the design and specifications of the eye bolt screws to achieve the desired load capacity.

Load capacity customization may involve:

  • Choosing Appropriate Materials: Eye bolt screws can be manufactured from a variety of materials, including steel, stainless steel, alloys, or non-metallic composites. The selection of materials with higher tensile strength or specific load-bearing properties can enhance the load capacity of the eye bolt screws.
  • Modifying Dimensions: By adjusting the diameter, thread size, or shank length of the eye bolt screws, engineers can optimize their load-carrying capabilities. Increasing the cross-sectional area or altering the thread profile can enhance the strength and load capacity of the screws.
  • Consideration of Thread Engagement: The length and depth of engagement between the eye bolt screw and the receiving component can impact the load capacity. Customization may involve ensuring adequate thread engagement to maximize the load-carrying capability and prevent thread stripping or failure.

Application-Specific Customization:

Eye bolt screws can also be customized to suit specific applications or operational requirements. Different industries and applications may have unique needs that require customized eye bolt screws. Some examples of application-specific customization include:

  • Coatings and Surface Treatments: Eye bolt screws can be customized with coatings or surface treatments to enhance their performance in specific environments. For instance, coatings like zinc plating, galvanizing, or epoxy coatings can provide corrosion resistance, chemical resistance, or improve friction characteristics.
  • Specialized Threads: Certain applications may require specialized thread forms or configurations, such as fine threads, coarse threads, or special thread profiles. Customizing the threading of eye bolt screws can ensure compatibility with specific components or facilitate easier installation or removal.
  • Special Features: Eye bolt screws can be customized with special features to meet unique application requirements. This may include the addition of swiveling mechanisms, locking mechanisms, or other attachment points to enhance functionality or ease of use.

By customizing eye bolt screws for specific load capacities or applications, engineers can optimize their performance, safety, and reliability. It is important to work with experienced manufacturers or suppliers who can provide guidance and expertise in customizing eye bolt screws based on the specific requirements of the intended application.

eye bolt screw

Can eye bolt screws be used for both temporary and permanent installations?

Yes, eye bolt screws can be used for both temporary and permanent installations, depending on the specific application and requirements. Let’s explore the use of eye bolt screws in both scenarios:

Temporary Installations:

Eye bolt screws are commonly employed in temporary installations where a temporary attachment point is needed for lifting or securing loads. Some examples of temporary installations include:

  • Construction and Rigging: Eye bolt screws can be used during construction or rigging projects to provide temporary attachment points for lifting equipment, securing temporary structures, or supporting temporary loads. They offer a quick and convenient solution for temporary lifting operations and can be easily installed and removed as needed.
  • Events and Exhibitions: Eye bolt screws are often used in event setups, such as stage installations, exhibition displays, or hanging decorations. They provide a temporary attachment point for suspending lighting, audio equipment, banners, or other temporary fixtures. Once the event or exhibition is over, the eye bolt screws can be removed without causing permanent damage to the venue.
  • Temporary Storage and Transport: Eye bolt screws can be used in temporary storage or transport applications to secure loads during transit or storage. They provide a reliable attachment point for securing items with ropes, cables, or straps, ensuring that they remain stable and protected during temporary storage or transportation.

Permanent Installations:

Eye bolt screws are also suitable for permanent installations that require a long-term or permanent attachment point. Some examples of permanent installations include:

  • Industrial and Manufacturing: Eye bolt screws are commonly used in industrial and manufacturing settings to create permanent attachment points for lifting heavy machinery, equipment, or structural components. These installations are designed to be long-lasting and provide a reliable and secure connection for ongoing lifting operations.
  • Marine and Boating: Eye bolt screws with corrosion-resistant materials, such as stainless steel, are frequently used in marine and boating applications. They serve as permanent attachment points for securing ropes, cables, or chains on boats, docks, or other marine structures, ensuring safe and reliable mooring or towing operations.
  • Building and Infrastructure: Eye bolt screws are utilized in building and infrastructure projects for permanent installations. They are often embedded into concrete or other structural materials to create permanent attachment points for lifting, suspension, or anchoring purposes. These installations are designed to withstand long-term loads and provide a durable and dependable attachment solution.

It is important to note that regardless of whether eye bolt screws are used for temporary or permanent installations, proper installation techniques, load calculations, and adherence to safety guidelines are essential to ensure the effectiveness, reliability, and safety of the installations.

eye bolt screw

Can you explain the different types of eye bolt screws available in the market?

In the market, there are several different types of eye bolt screws available, each with its own design and specific applications. These variations in design make eye bolt screws suitable for a wide range of uses. Here are some of the common types of eye bolt screws:

  1. Regular Eye Bolt: Regular eye bolts are the most basic type of eye bolt screws. They feature a straight shank with a looped eye at the end. The eye is typically circular or oval-shaped. Regular eye bolts are used for various applications that require a simple and reliable attachment point.
  2. Shoulder Eye Bolt: Shoulder eye bolts have a shoulder or collar between the shank and the eye. The shoulder provides additional support and prevents the bolt from pulling through the attachment point. Shoulder eye bolts are often used in lifting applications, where stability and load-bearing capacity are crucial.
  3. Machine Shoulder Eye Bolt: Machine shoulder eye bolts are similar to shoulder eye bolts but have a smaller shank diameter relative to the eye size. They are specifically designed for use with machinery, where space constraints or specific mounting requirements exist.
  4. Lag Eye Bolt: Lag eye bolts have a lag screw thread on the shank, allowing them to be screwed directly into wood or other materials without the need for a pre-drilled hole. They are commonly used for attaching ropes, cables, or hardware to wooden structures, such as decks, fences, or playground equipment.
  5. Welded Eye Bolt: Welded eye bolts have a welded eye instead of a looped eye. The eye is permanently welded to the shank, providing a strong and durable attachment point. Welded eye bolts are often used in heavy-duty applications, such as construction, manufacturing, or rigging.
  6. Swivel Eye Bolt: Swivel eye bolts feature a swiveling eye that allows for rotation and movement. The swivel action helps prevent twisting or tangling of ropes or cables. Swivel eye bolts are commonly used in applications where dynamic or multi-directional forces are involved, such as lifting or rigging operations.
  7. Shoulder Nut Eye Bolt: Shoulder nut eye bolts have a shoulder between the shank and the eye, similar to shoulder eye bolts. However, they also feature a nut on the shank, allowing for adjustable tension or positioning. Shoulder nut eye bolts are often used in tensioning applications or for attaching hanging objects that require precise alignment.

The choice of the appropriate type of eye bolt screw depends on the specific requirements of the application, including load capacity, attachment method, space constraints, and functionality. It is important to select eye bolt screws that meet the necessary specifications, such as load ratings, material strength, and corrosion resistance, to ensure safe and reliable performance.

When using eye bolt screws, it is essential to follow manufacturer guidelines, industry standards, and applicable safety regulations. Proper installation, torque values, and regular inspections are necessary to maintain the integrity and reliability of eye bolt screw attachments.

China OEM Welded Eye Screw Building Material Hardware Fasteners Drywall Screws  China OEM Welded Eye Screw Building Material Hardware Fasteners Drywall Screws
editor by CX 2024-04-03

China Standard Welded Eye Screw Building Material Hardware Fasteners with high quality

Product Description

 

Company Profile

       HangZhou CITY CZPT IMPORT&EXPORT TRADING CO., LTD is a company specializing in the production of series high-end building expansion anchor, combining the researching, manufacturing and trading together.

 

     We aim to provide service to society, forming a wide range of marketing services network in the aspects of business management and scientific research and development. That strengthens the contact with our customers.

 

     The mainly products of our company are Wedge Anchor,Sleeve Anchor,Bolt Anchors,Metal Frame Anchor,Chemical Anchor,Drop In Anchor,Ceiling Anchor,4Pcs Heavy Duty Anchor,Metal Hit Anchor, anchor bolt ,expansion anchor ,hex nut, clamp, washer and so on.

 

 

    Our products are popular in nationwide, considering to be a model by the customers.We insist on provide more high quality service for the customers with powerful strength and strong technology.

 

     We awards ISO 9001; 2000 international quality management system certification, the quality contract of PICC and The seventh consumer trust units in ZheJiang province.
 

Product Description

Name Welded Eye Screw Building Material Hardware Fasteners 
Place of Origin Xihu (West Lake) Dis., ZheJiang , China
Size M6-M30 or non-standard as request &design
Length as request&design
Grade 4.8
Standards GB, DIN, ISO, ANSI/ASTM, B7, BS, JIS etc
Material Q235, 45#, 40Cr, 20Mntib, stainless steel, etc 
Surface Plain, galvanized, bule white, YZP etc
Delivery Within 15-30 days after confirm the order.
Package 25KG/CTN,45CTNS/PLT, or according to customers’ requirement
Payment L/C or T/T 
Non-standards OEM is available if you provide a drawing or sample.
Samples Samples are free.
Usage                          Metal structures, profiles, floor, bearing plates, brackets, railings, walls,machines, beams, etc

Detailed Photos

Packaging & Shipping

 

Certifications

FAQ

1) Are you trading company or factory?
We are fastener manufacturer and exporter from China, our factory located at HangZhou City, ZheJiang Province,China.
2) What is your main products? 
Wedge Anchor,Sleeve Anchor,Drop In Anchor,Chemical Anchor,Threaded rod, Hex bolt, Hex Nut, Flat washer, Screws, Clamp etc
3) Do you have MOQ for your product?
It depends on sizes, Usually1000 kgs to 2000 kgs.
4) How about your delivery time?
From 2 days to 30 days, depends on your sizes and quantity.
5) What is your payment term?
T/T, LC, DP, etc.
6)  Can you send me a price list?
Due to a lot of kinds of fasteners, we quote prices accoridng to sizes, quantity 
7) Can you provide samples?
Sure,samples are free

Types of Screw Shafts

Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which 1 is the best choice for your project? Here are some tips to choose the right screw:

Machined screw shaft

The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.
screwshaft

Acme screw

An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
screwshaft

Lead screw

A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, 1 should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.

Fully threaded screw

A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are 2 major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically 1 millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect 2 elements.
screwshaft

Ball screw

The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.

China Standard Welded Eye Screw Building Material Hardware Fasteners   with high qualityChina Standard Welded Eye Screw Building Material Hardware Fasteners   with high quality