Product Description

Product Description

Product name :Male pipe NPTF Rigid hose couplings fitting MP series
1.Raw Material:Carbon Steel & Stainless Steel available
2.Standard Plating:Trivalent Zinc Plating ( Cr3 / Chrome Free ), Silver & Yellow
3.Salt Spray Test:> 72 Hours ( If customer have higher requirement, we can also do with 200 Hours )
4.Packing:Products are protected with the plastic caps and then packed in carbon box.
5.OEM Service:Available.Customer only need to provide the product drawing or samples.
6.Sample:Free sample.

Description Of Products:

1) Material: C45 /C20 Carbon steel, Stainless steel

2) Finish: yellow Zinc plated, White Zinc Plated

3) Standards: PARKER,EATON

4) Certification: ISO9001


MP-02-02 MP-02-02 – 1/8″ Hose x 1/8″ NPTF Male Pipe Rigid crimp fitting
MP-03-02 MP-03-02 – 3/16″ Hose x 1/8″ NPTF Male Pipe Rigid crimp fitting
MP-04-02 MP-04-02 – 1/4″ Hose x 1/8″ NPTF Male Pipe Rigid crimp fitting
MP-04-04 MP-04-04 – 1/4″ Hose x 1/4″ NPTF Male Pipe Rigid crimp fitting
MP-04-06 MP-04-06 – 1/4″ Hose x 3/8″ NPTF Male Pipe Rigid crimp fitting
MP-04-08 MP-04-08 – 1/4″ Hose x 1/2″ NPTF Male Pipe Rigid crimp fitting
MP-06-04 MP-06-04 – 3/8″ Hose x 1/4″ NPTF Male Pipe Rigid crimp fitting
MP-06-06 MP-06-06 – 3/8″ Hose x 3/8″ NPTF Male Pipe Rigid crimp fitting
MP-06-08 MP-06-08 – 3/8″ Hose x 1/2″ NPTF Male Pipe Rigid crimp fitting
MP-08-04 MP-08-04 – 1/2″ Hose x 1/4″ NPTF Male Pipe Rigid crimp fitting
MP-08-06 MP-08-06 – 1/2″ Hose x 3/8″ NPTF Male Pipe Rigid crimp fitting
MP-08-08 MP-08-08 – 1/2″ Hose x 1/2″ NPTF Male Pipe Rigid crimp fitting
MP-08-12 MP-08-12 – 1/2″ Hose x 3/4″ NPTF Male Pipe Rigid crimp fitting
MP-10-08 MP-10-08 – 5/8″ Hose x 1/2″ NPTF Male Pipe Rigid crimp fitting
MP-10-12 MP-10-12 – 5/8″ Hose x 3/4″ NPTF Male Pipe Rigid crimp fitting
MP-12-08 MP-12-08 – 3/4″ Hose x 1/2″ NPTF Male Pipe Rigid crimp fitting
MP-12-12-BLK MP-12-12 – 3/4″ Hose x 3/4″ NPTF Male Pipe Rigid (Buy in Bulk) crimp fitting
MP-12-12 MP-12-12 – 3/4″ Hose x 3/4″ NPTF Male Pipe Rigid crimp fitting
MP-12-16 MP-12-16 – 3/4″ Hose x 1″ NPTF Male Pipe Rigid crimp fitting
MP-16-12 MP-16-12 – 1″ Hose x 3/4″ NPTF Male Pipe Rigid crimp fitting
MP-16-16-BLK MP-16-16 – 1″ Hose x 1″ NPTF Male Pipe Rigid (Buy in Bulk) crimp fitting
MP-16-16 MP-16-16 – 1″ Hose x 1″ NPTF Male Pipe Rigid crimp fitting
MP-20-20 MP-20-20 – 1-1/4″ Hose x 1-1/4″ Male Pipe Rigid crimp fitting

Manufacture intruduction:
HangZhou OPK FITTING Hydraulic Equipment Factory is a specialized domestic factory with hydraulic pipes,adaptors production experience. Our managing scope relates to various fields such as hydraulic system etc; Including all kinds of the materials with different pressure levels, the flexible hydraulic hoses with various size criterions, hose fitting, adaptor etc. They have been respectively applied in the hydraulic and fluid conveyance system of the industries, such as machinery, metallurgy petroleum, construction, ships, space-flight, agriculture, pharmaceutical, food and so forth. 

The factory owns a group of high quality and high-tech professional designers and personnel group. It possesses a series of the fully automatic computer NC machine tools and high precision lathes, the multiple spindle tool machines, hexangular tool machines and electric heated bent pipe machines. We have strictly adopted the professional personnels to carry on the tests and examinations for our products, in order to provide a assurance in the high-quality for all the customers. 

Our factory aims are strict management style, high-quality, honestly and faithly style, sincerely services. It implements the pipe-cutting, rubber-stripping, hose crimping, trail-pressure, rinsing in aspect of the manufacture technology. Our products have the features of the consummate structure, advanced design. Theelbow joint adopts the integral production craft and technology and chooses the advanced high frequency heater and fully automatic computer pipe bender for the processing. It conforms with the requirements of pleasing appearance, fine pragmatism and low price. And our products exported to some MID-eastern nations and some European countries such as USA, Greece, British, etc. The factory is located on Hengxi industrial estate, Xihu (West Lake) Dis., HangZhou, China. There is the cradleland of hydraulic pipes and has transport facilities, enough supply of goods. All staff members of this factory warmly welcome broad old and new consumers in all walks of life come to visit us and negotiate business with us. We are willing to wholeheartedly serve you by the superior products and preferential price. We wish we can sincerely cooperate with each other for the purpose of jointly creating afine future.

Shipping & Service:

1. Orders will be dispatched in 30 days after payment, depending on quantities.
2. We Always choose the most economical and reliable shipping company to make sure you receive the goods in time.
3. The tracking number will be offered you once the consignment is shipped.
4. Professional customer service to answer your questions or fix problems regarding your order.
Certificate: Our factory is strictly conducted by ISO9001: 2008
Quality assureance: Raw material incoming inspection, first article samples, PPAP, process inspection, final inspection.

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rigid coupling

What Are the Maintenance Requirements for Rigid Couplings?

Rigid couplings are known for their simplicity and low maintenance requirements. Since they do not have moving parts or flexible elements, there are minimal wear and tear issues. However, some maintenance considerations for rigid couplings include:

1. Regular Inspection: It is essential to perform periodic inspections of the rigid couplings to check for any signs of wear, damage, or misalignment. Regular inspections can help identify potential issues early and prevent further problems.

2. Shaft Alignment: Proper shaft alignment is critical for rigid couplings. During installation or whenever maintenance work is performed on the connected machinery, the shaft alignment must be checked and adjusted if necessary. Misalignment can lead to premature coupling failure and cause additional stress on connected equipment.

3. Lubrication: Most rigid couplings do not require lubrication since they have no moving parts. However, some special designs or large-sized couplings may have set screws or other fasteners that require lubrication. It is essential to follow the manufacturer’s guidelines regarding lubrication, if applicable.

4. Corrosion Protection: In corrosive environments, protecting the rigid couplings from corrosion is crucial. This can be achieved through the use of corrosion-resistant materials or coatings.

5. Periodic Re-tightening: If the rigid coupling uses set screws or other fasteners, periodic re-tightening may be necessary to maintain the integrity of the connection. This is particularly important in applications with high vibrations or heavy loads.

6. Temperature Considerations: Rigid couplings may experience thermal expansion or contraction, especially in high-temperature environments. It is essential to consider the thermal expansion characteristics of the coupling material and the connected shafts to ensure proper functioning under varying temperatures.

7. Professional Maintenance: In complex systems or critical applications, it is advisable to seek professional maintenance and alignment services. Expert technicians can ensure proper installation, alignment, and maintenance of rigid couplings, reducing the risk of unexpected failures.

Overall, rigid couplings are designed for reliability and longevity, and proper maintenance practices can further enhance their performance and lifespan. Regular inspections and alignment checks are vital for identifying and addressing potential issues before they escalate into costly problems.

rigid coupling

What Industries Commonly Use Rigid Couplings for Power Transmission?

Rigid couplings are widely used in various industries for power transmission applications that require a solid and reliable connection between rotating shafts. Some of the industries that commonly utilize rigid couplings include:

  • Manufacturing: In the manufacturing industry, rigid couplings are employed in a wide range of equipment, such as conveyors, mixers, pumps, compressors, and machine tools. These couplings ensure precise power transmission and alignment, making them ideal for maintaining accuracy in manufacturing processes.
  • Material Handling: Material handling equipment, including cranes, hoists, and elevators, often rely on rigid couplings to transfer power between shafts efficiently. Rigid couplings provide a robust connection that can handle the heavy loads and continuous operation common in material handling applications.
  • Automotive: The automotive industry employs rigid couplings in various automotive systems, including drive shafts, transmissions, and steering systems. Rigid couplings contribute to the overall performance and reliability of these components, ensuring smooth power transfer and minimizing vibration.
  • Mining and Construction: In the mining and construction industries, rugged and durable power transmission components are crucial. Rigid couplings are used in equipment like crushers, mills, and heavy-duty conveyors, where they can withstand the harsh conditions and heavy loads commonly found in these applications.
  • Oil and Gas: The oil and gas industry often utilizes rigid couplings in pumps, compressors, and drilling equipment. Rigid couplings offer consistent and dependable power transmission, which is essential for critical operations in this sector.
  • Marine: In marine applications, such as ship propulsion systems and marine pumps, rigid couplings are used to transmit power between the ship’s engine and various equipment. They can handle the dynamic forces and vibrations encountered in marine environments.
  • Aerospace: In aerospace applications, where precision and reliability are paramount, rigid couplings play a role in power transmission between various aircraft components.

Rigid couplings are chosen in these industries for their ability to maintain shaft alignment, resist misalignment, and provide a backlash-free connection. Their robust construction and simple design make them suitable for high torque and high-speed applications, where precision and efficiency are crucial.

rigid coupling

Materials Used in Manufacturing Rigid Couplings:

Rigid couplings are designed to provide a strong and durable connection between two shafts, and they are commonly made from a variety of materials to suit different applications. The choice of material depends on factors such as the application’s environment, load capacity, and cost considerations. Some common materials used in manufacturing rigid couplings include:

  • 1. Steel: Steel is one of the most widely used materials for rigid couplings. It offers excellent strength, durability, and resistance to wear. Steel couplings are suitable for a wide range of applications, including industrial machinery, automotive systems, and power transmission.
  • 2. Stainless Steel: Stainless steel couplings are used in applications where corrosion resistance is crucial. They are well-suited for environments with high humidity, moisture, or exposure to chemicals. Stainless steel couplings are commonly used in food processing, pharmaceuticals, marine, and outdoor applications.
  • 3. Aluminum: Aluminum couplings are known for their lightweight and corrosion-resistant properties. They are often used in applications where weight reduction is essential, such as aerospace and automotive industries.
  • 4. Brass: Brass couplings offer good corrosion resistance and are commonly used in plumbing and water-related applications.
  • 5. Cast Iron: Cast iron couplings provide high strength and durability, making them suitable for heavy-duty industrial applications and machinery.
  • 6. Bronze: Bronze couplings are known for their excellent wear resistance and are often used in applications involving heavy loads and low speeds.
  • 7. Plastics: Some rigid couplings are made from various plastics, such as nylon or Delrin. Plastic couplings are lightweight, non-conductive, and suitable for applications where electrical insulation is required.

It’s essential to consider the specific requirements of the application, including factors like load capacity, operating environment, and cost, when choosing the appropriate material for a rigid coupling. The right material selection ensures that the coupling can withstand the forces and conditions it will encounter, resulting in a reliable and long-lasting connection between the shafts.

China Good quality Male Pipe Nptf Rigid Hose Couplings Fitting MP Series  China Good quality Male Pipe Nptf Rigid Hose Couplings Fitting MP Series
editor by CX 2024-02-25