Tag Archives: steel screw

China wholesaler ASTM519 Rebar Carbon Steel Bolt Screw Coupler/Joint/Sleeve/Coupling/Tube/Pipe/Rebar coupling engineering

Product Description

Product Description


Standard rebar couplers made by raw material 45# carbon steel with competitive price and divided into standard couplers, positional rebar couplers, and transition rebar couplers.


Thread Rebar Couplers Standard Type 

Used for Rebar:

HRB400/Grade 65/ and so on with rebar yield strength same as 500Mpa   or lower than that.

Raw Material:

S45C -yield strength 420Mpa, Tensile strength: 600-650MPa




By bags and pallets packing, or wooden case packing as required (25KG   smaller packing, 1700KG per pallet)


Free existing samples for checking dimension and quality

Production time:

15-40 days based on different quantity after receive the prepayment

Shipping Port:

Xihu (West Lake) Dis.g,ZheJiang Port,  ZheJiang   Port, China.

Payment Terms:





SIZE (mm)

Out Diameter (mm)

Length (mm)

Pitch (mm)

N.W    (KG)



Approvals/ Certificate









































































1. Standard rebar couplers Introduction

Standard rebar coupler belongs to Rolling technology, it is a parallel-thread mechanical splicing system used for the 16mm to 40mm reinforcing bars mechanical connections. This system is first peeling the rebar rib and then doing thread by cold rolling, this technology can meet with China standard of JGJ107-2571, USA standard of ACI318, UK standard of BS8110, VN standard of TCVN8163, and other international standards. The couplers can be divided into standard couplers with all right-hand thread, and also positional rebar coupler with 1 side left-hand thread another size right-hand thread, also it has transition couplers which 2 sides have different diameters. Also, this coupler has a competitive price over super couplers and is suitable for little lower rebar grades such as HRB400 or HRB500 rebar, it has full sizes from 16mm to 40mm.

2.45# steel carbon steel rebar couplers Features and advantages

a.Saving cost and easy operation than the lapping of rebar

b.One time loading can finish the rib peeling and thread rolling together.

c.Single step process, only 1 machine, 1 operator.

d.Assemble by visual inspection

e.Standard ISO parallel Metric Thread designs.

f.Used for many kinds of connections for a position or transition couplers

CPDL Rebar Coupler China Steel Rebar Coupler Manufacturers OEM/ODM On-demand Customized Rebar Splicing Coupler Wholesale Thread Rebar Couplers Standard Type

Recommended Products

Company Profile

Xihu (West Lake) Dis. Dingli Steel sleeve Co., Ltd. Was founded in 2011. With more than 10 years of experience in the field of rebar couplers manufacture, the company is located in Xinfa Industrial Park, Xihu (West Lake) Dis. County, HangZhou City, ZheJiang Province. The registered capital is 6 million.

Covers an area of 5, 000 square meters. 2011-2015 mainly in the Chinese domestic market, has served China′s major nuclear power plants and national enterprise buildings, 2016-now began to export, the establishment of 6 types of reinforced couplers, can be customized to a variety of sizes of couplers, in 2017 developed the cone thread system, in 2018 developed the fast connection system, We did not stop on the road of research and development, and strive to break through Dingli is a professional development, production and sales of rebar coupler and other mechanical connection products of the enterprise.

From inner management to outer sales, from technology improvement to customer complaints, we put all our efforts in providing products with high quality, perfect service and reasonable price that clients require. Our products have been exported to: USA, Mexico, Colombia, Australia, Poland, Russia, Korea, Thailand, India, Singapore, Malaysia, Vietnam, KSA, Qatar, Kuwait, Iran, Philippines, Ethiopia, Pakistan. Our annual productivity is 5, 000, 000 PCS of different kind of rebar coupler.

The most fast delivery time is within 5days for 1 container. Clients inspection on site is acceptable at anytime. We do produce Rebar parallel thread connection, cold press connection, rebar bridging connection, rebar taper thread connection, rebar nut-lock screw connection, 1 touch coupler and bolt coupler. We give client the best product and service with reasonable price, highest quality. Our company is approved by the industry with good faith strength and product quality.

Packaging & Shipping



1. Q: Are you a trading company or manufacturer?

    A: We are an original equipment manufacturer.

2. Q: How long is your delivery time?

    A: It is according to the model and quantity.

        Generally, it is 3-5 days if the products are in stock.

        It will be 15-30 days if you want to customize the products

3. Q: What are your terms of payment?

    A: We accept T/T, Western Union, Money Gram, PayPal, Alibaba Escrow, etc.

        Payment<=USD 5000, 100% in advance.

        Payment>=USD 5000, 30% T/T in advance, balance before shipment.

 4. Q: Do you provide samples? Is it free or extra?

A: Yes, we could offer the sample for free charge, but clients do not need to pay the cost of freight.

Connection: Welding
Head Code: Round
Thread Distribution: Internal Thread
Surface: Polish
Material: Carbon Steel
Technics: Casting
US$ 0/Piece
1 Piece(Min.Order)

Request Sample



Customized Request


Programming With Couplings

A coupling is a mechanical device that connects two shafts together and transmits power. Its purpose is to join rotating equipment and allows some degree of end-movement or misalignment. There are many different types of couplings. It’s important to choose the right one for your application.

Mechanical connection between two shafts

There are many ways to achieve mechanical connection between two shafts, including the use of a coupling. One common type is the beam coupling, which is also known as a helical coupling. It is used for transmission of torque between two shafts. This type of connection accommodates axial, parallel and angular misalignments.
The hubs and shafts of a worm gear are connected together by a coupling. This mechanical connection allows one shaft to turn another without causing a mechanical failure. This type of coupling is made from sliding or rubbing parts to transfer torque. However, the coupling is not designed to withstand jerks, so it isn’t suitable for high-speed applications.
The use of a coupling is common in machinery and equipment. It helps transmit power from one drive shaft to the other, while adding mechanical flexibility. It is also useful for reducing the impact and vibration caused by misalignment. It also protects the drive shaft components from wear and tear.
A double-hook coupling can be used to provide a uniform angular velocity at the driven shaft. Another example is a double-jointed coupling. A double-jointed coupling can be used to connect shafts that are not directly intersecting. The double-jointed yoke can be used for the same purpose.
A shaft coupling is a device that maintains a strong mechanical connection between two shafts. It transfers motion from one shaft to another, at all loads and misalignments. Unlike a conventional linkage, a shaft coupling isn’t designed to allow relative motion between the two shafts. Couplings often serve several purposes in a machine, but their primary use is torque and power transmission.

Functions that control the flow of another function

One of the simplest programming constructs is a function that controls the flow of another function. A function can take an argument and return a different value, but it must be ready to return before it can pass that value to another function. To do this, you can use the goto statement and the if statement. Another way to control flow is to use a conditional statement.

Criteria for selecting a coupling

There are several important factors to consider when choosing the right coupling. One of the most important factors is coupling stiffness, which depends on the material used and the shape. The stiffness of a coupling determines its ability to resist elastic deformation. A stiff coupling is desirable for certain types of applications, but it’s undesirable for others. Stiffness can reduce the performance of a system if there’s too much inertia. To avoid this, ensure that the coupling you choose is within the recommended limits.
The size of a coupling is also important. Different coupling types can accommodate different shaft sizes and shapes. Some couplings have special features, such as braking and shear pin protection. When choosing a coupling, you should also consider the type of driven equipment. If you need to connect a high-torque motor, for example, you’ll want to choose a gear coupling. Likewise, a high-speed machine may require a disc coupling.
Another factor to consider when selecting a coupling is the torque rating. Despite its importance, it’s often underestimated. The torque rating is defined as the torque of the coupling divided by its OD. In some cases, torque may fluctuate during a cycle, requiring a coupling with a higher torque rating.
Torsionally flexible couplings are also important to consider. Their design should be able to withstand the torque required during operation, as well as the required speed. The coupling should also have a high degree of torsional stiffness, as well as damping. Furthermore, a damping coupling can reduce the energy wasted through vibration.
The sizing of a coupling is also determined by the torque. Many engineers use torque to select the correct coupling size, but they also take into consideration torsional flexibility and torsional stiffness. For example, a shaft may be able to handle large torque without damaging the coupling, while a disk may be unable to handle large amounts of torque.
Besides torque, another important consideration in coupling selection is the cost. While a coupling may be cheaper, it may be less reliable or easier to maintain. Couplings that are difficult to service may not last as long. They may also require frequent maintenance. If that’s the case, consider purchasing a coupling with a low service factor.
There are many different types of couplings. Some require additional lubrication throughout their lifetime, while others are 100% lubrication-free. An example of a 100% lubrication-free coupling is the RBI flexible coupling from CZPT. This type of coupling can significantly reduce your total cost of ownership.
In addition to the above-mentioned benefits, elastomeric couplings are low-cost and need little maintenance. While they are often cheaper than metallic couplings, they also have excellent shock absorption and vibration dampening properties. However, they are susceptible to high temperatures. Also, they are difficult to balance as an assembly, and have limited overload torque capacity.
China wholesaler ASTM519 Rebar Carbon Steel Bolt Screw Coupler/Joint/Sleeve/Coupling/Tube/Pipe/Rebar   coupling engineeringChina wholesaler ASTM519 Rebar Carbon Steel Bolt Screw Coupler/Joint/Sleeve/Coupling/Tube/Pipe/Rebar   coupling engineering
editor by CX 2023-06-14

China Best Sales Factory Price Standard Set Screw Type Steel EMT Coupling Supplier with Hot selling

Product Description

EMT couplings set screw type

Product Description

Product Name EMT couplings
Material Zinc Die Cast/Aluminum
Application To joint 2 ends of EMT pipes
Surface Treatment Hot dip ganvanized
Trade Size 1/2″-4″
Technics Forged,Casting
Connection Set Screw Type

Detailed Images

Standard carton+plastic bag
15-20 days after deposit

SSEP-50 1/2″
SSEP-75 3/4″
SSEP-100 1″
SSEP-125 1-1/4″
SSEP-150 1-1/2″
SSEP-200 2″
SSEP-250 2-1/2″
SSEP-300 3″
SSEP-400 4″

Q1:When can I get the quotation?
A1:Within 24 hours.
Q2:Which port do you refer?
A2:ZheJiang port or HangZhou port.
Q3:What’s your Minimum Order Quantity(MOQ)of your product?
A3:Generally,MOQ is 1×20′ container.Others can contact us directly.
Q4:How about the lead time?
A4:Usually 20 days after deposit in our account.
If you have any questions,please feel free to contact us!!


Connection: Female
Structure: Universal
Flexible or Rigid: Rigid
Material: Carbon Steel
Standard: Standard
Transport Package: Standard Carton


Customized Request


Understanding the Different Types of Couplings

A coupling is a device that joins two rotating shafts together. It transmits power from one to the other and is designed to allow some amount of end-movement and misalignment. It is a simple mechanism that is extremely common in many industries. Learn more about couplings in this article.

Flexible coupling

When choosing the correct flexible coupling for your application, there are several factors to consider. One of the most important factors is backlash, which is the amount of rotational play introduced by moving parts. Other factors to consider include lubrication and accessibility for maintenance. Choosing the right flexible coupling can be challenging, but it is possible to find the right fit for your specific application.
A flexible coupling is an excellent choice for applications that require high alignment accuracy, which is essential for reliable system performance. These couplings can compensate for angular and parallel misalignment, ensuring proper positioning between the driving and driven shafts. In addition, flexible couplings are more affordable than most traditional couplings.
The most common flexible coupling is the elastomeric type, which uses a resilient material to transmit torque. These couplings can be made of plastic or rubber. In either case, they can be relatively lightweight compared to other types of couplings. Elastomeric couplings can also be used for high-speed applications.
Another important factor to consider when selecting the best Flexible Coupling is the pipe you’re connecting. Some couplings are easier to install than others, and some even have tapered edges to make them slide easily on the pipe. Regardless of the choice you make, it’s crucial to remember that proper installation is critical for reliability and safety.

CZPT coupling

An CZPT coupling is a flexible, mechanical coupling that features a high degree of angular misalignment and eccentricity. They are available in different lengths, with MOL being the longest. They are ideal for applications that involve high parallel misalignment, limited assembly access, electrical insulation, and other conditions.
CZPT couplings are a versatile type of coupling, and they are often used to connect parallel shafts. They work by transmitting torque from one to the other using the same speed and rotation mechanism. They are available in various materials, including aluminum, brass, and polymers. In addition, they can work under high temperatures.
One of the main benefits of using an CZPT coupling is the fact that it does not require the use of a gearbox. These couplings are flexible, and their design allows them to cope with misalignment problems that may occur in power transmission applications. They are also able to absorb shock.
Another advantage of CZPT couplings is that they are suitable for systems with low-to-medium amounts of shaft misalignment. Because their friction is limited to the surface of the hubs, they are able to accommodate low bearing loads. CZPT couplings can also be used in systems with limited shaft access, since the disks are easily removed.

Clamped coupling

Clamped couplings are designed to provide a high-strength connection between two objects. A standard coupling has two parts: a nipple and a clamp sleeve. Each part is designed in such a way as to cooperate with each other. The sleeve and clamp are made of rubber. A reinforcing braid is often used to protect the exposed steel braid from rusting.
PIC Design provides a wide variety of standard clamping couplings for many different industries. These include medical, dental, military, laboratory, and precision industrial control equipment. They have a simple design that makes them ideal for these applications. Clamped couplings are also available for custom manufacturing. These couplings are available in metric, inch, and Metric.
The most common type of clamp coupling is a hose clamp. This type of coupling is used to connect two hoses or piping units. It consists of two conical binding sleeves that fit into the ends of the two parts. The coupling is then tightened with a screwdriver. It’s a versatile coupling because it allows two piping units or hoses to be joined together.
Another type of clamp coupling is the two-piece clamp coupling. The two-piece design allows for a quick and easy installation. Unlike other types of couplings, the clamp coupling is not necessary to remove the bearings before installing it. Its keyway is designed with shims in place so that it fits over the shaft. These couplings are available in different sizes, and they are made of steel or dutile iron.

Helicoidal coupling

Helicoidal coupling is a form of nonlinear coupling between two molecules. It occurs when the molecules in a double helix are subjected to oscillations. These oscillations can occur either in the right or left-handed direction. These oscillations are called solitons. Helicoidal coupling can provide quantitative or qualitative support to a structure, such as an electron.

Split Muff coupling

The Split-Muff Coupling market report provides detailed market analysis and key insights. The study covers the market size, segmentation, growth and sales forecast. It also examines key factors driving the market growth and limiting its development. The report also covers current trends and vendor landscapes. Therefore, you can get a deep understanding of the Split-Muff Coupling industry and make the right business decisions.
The report also provides data on the competitive landscape and the latest product and technology innovations. It also provides information on market size, production and income. It also covers the impact of the COVID-19 regulations. The market report is a valuable resource for companies looking to expand their businesses, or to improve existing ones.
In terms of application, Split-Muff Couplings can be used in light to medium duty applications. They are shaped like a semi-cylindrical disc that fits over a shaft. Both parts are threaded for assembly and disassembly. It can be disassembled easily and quickly, and can be used for medium to heavy-duty applications with moderate speeds.
Split Muff couplings are the most popular type of couplings for transferring wet and abrasive materials. Their flanged end fits on most major brands of smooth material muff hoses. In addition, this type of coupling is corrosion-resistant and easy to install. It also does not require any adjustments to the drive shaft’s position.

Flexible beam coupling

The Flexible beam coupling is one of the most popular types of couplings in the industry. It is comprised of two sets of parallel coils separated by a solid member, and it offers a wide range of torsional stiffness. These couplings are made of aluminum alloy or stainless steel. They offer excellent flexibility and are less expensive than many other types of couplings. They also require zero maintenance and can tolerate shaft misalignment.
Beam couplings are categorized into two types: helical and axial. The former is characterized by a high degree of flexibility, while the latter is used to compensate for higher misalignment. Both types are suitable for small torque applications and are available in a wide range of shaft sizes.
Flexible beam couplings are available in metric and US sizes, and feature a variety of options. They feature stainless steel or aluminum materials and are highly durable and corrosion-resistant. They also offer high torque capacities and excellent fatigue resistance. Flexible beam couplings are available with a wide range of options to meet your unique application needs.
China Best Sales Factory Price Standard Set Screw Type Steel EMT Coupling Supplier   with Hot selling		China Best Sales Factory Price Standard Set Screw Type Steel EMT Coupling Supplier   with Hot selling
editor by CX 2023-05-18