China Hot selling Stainless Steel Pipe Fittings 304 1/4″-4″ NPT/BSPT Female Thread Coupling

Product Description

 

Product Name Threaded Coupling
Material Stainless steel
Shape Equal
Casting Size DN8-DN100
Thread Standard BSPT BSP NPT
MOQ 100
Delivery Time 15days
Shipping Port HangZhou
Shipping Terms FOB,CIF,EXW

Company Profile

HangZhou LuWei Valve and Fittings Co.,Ltd ., located in China Valve City -Xihu (West Lake) Dis. District .Is a design,development ,casting and processing of high -tech valve fittings,the company has first -class CNC machine tools and testing equipment, and in strict accordance with the ISO9001international quality standard system of production ,testing ,sales and service ,to ensure product quality .
The company has mainly produces and sells : stainless steel threaded fittings , ball valves ,threaded valves ,quick , welding pipe fittings ,pneumatic valves ,etc., can also call custom non-standard products .our products are widely used in petroleum ,chemical ,metallurgical,pharmaceutical ,refrigeration ,light industry ,electricity , environmental protection and so on industry . Products are exported to many countries and regions ,won the majority of customer recognition .
 

 

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Packaging&Shipping

FAQ

1. Are you a manufacturer or trading company?
We are a professional valves and fittings manufacturer with 6 years’ experience.
We have done business with our customers well.

2. What is payment method?
For samples: T/T, western union.
For orders: T/T or L/C.

3. Do you offer free samples?
We can provide free samples and you should pay the freight. After you place an order, we will give back the freight. 

4. Do you offer OEM service and can you product as our drawings?
Yes. We offer OEM service.
We accept custom design and we have a professional design team who can design products based on your requirements.
And we can develop new products according to your samples or drawings. 

5. Do you accept our design on boxes?
Yes. We accept custom design on boxes. 

6. What’s your delivery time?
Generally, we will arrange shipment with 30 days after receiving the deposit.
If urgent, we can also meet your requirement.

7. Is your price higher than other companies?
Since we have been a professional manufacturer for 6 years, we can control our quality and costs well. 
So our prices are very competitive.And we dedicate to establishing long-term and friendly relationships with all the customers.

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stainless steel coupling

What Industries Commonly Use Stainless Steel Couplings, and Why?

Stainless steel couplings are widely used in various industries due to their excellent properties and benefits. Some of the common industries where stainless steel couplings find significant usage include:

  • Food and Beverage: Stainless steel couplings are prevalent in the food and beverage industry because of their high corrosion resistance and hygienic properties. They are suitable for applications where the coupling may come into contact with water, food products, or cleaning agents.
  • Chemical Processing: In chemical processing plants, stainless steel couplings are preferred for their resistance to chemical corrosion. They can handle various chemicals and aggressive substances, making them suitable for pumps, mixers, and other equipment in the chemical industry.
  • Pharmaceutical: The pharmaceutical industry requires equipment that meets strict hygiene standards. Stainless steel couplings are easy to clean, durable, and resist contamination, making them ideal for pharmaceutical manufacturing processes.
  • Oil and Gas: In the oil and gas sector, stainless steel couplings are used in pipelines, compressors, and drilling equipment due to their ability to withstand harsh and corrosive environments, especially in offshore drilling operations.
  • Marine: Stainless steel couplings are widely used in marine applications because of their resistance to saltwater corrosion. They are found in propulsion systems, winches, and other marine equipment.
  • Aerospace: In the aerospace industry, where weight and reliability are crucial, stainless steel couplings are used in aircraft engines and other critical components to provide high-performance power transmission.
  • Pulp and Paper: The pulp and paper industry requires equipment that can handle the moisture and chemical-laden environment of paper mills. Stainless steel couplings are corrosion-resistant and suitable for various applications in this industry.
  • Power Generation: In power plants, stainless steel couplings are used in turbines, generators, and other equipment that require reliable power transmission and resistance to harsh operating conditions.
  • Mining: The mining industry utilizes stainless steel couplings in conveyor systems, crushers, and other equipment that requires high durability and resistance to abrasive materials.

In summary, stainless steel couplings are chosen for their corrosion resistance, durability, and reliability. They offer the ability to withstand challenging environments and ensure smooth power transmission, making them a preferred choice in a wide range of industries.

stainless steel coupling

Causes of Failure in Stainless Steel Couplings and Prevention

Stainless steel couplings are designed for durability and reliability, but like any mechanical component, they can experience failure under certain conditions. Understanding the potential causes of failure and taking preventive measures can help ensure the longevity and performance of stainless steel couplings. Some common causes of failure include:

1. Overloading: Exceeding the maximum torque or load capacity of the coupling can lead to deformation or breakage. To prevent overloading, it’s essential to choose a coupling with the appropriate torque and load ratings for the specific application.

2. Misalignment: Misalignment between shafts can create additional stresses on the coupling, leading to premature wear and failure. Regularly inspect and adjust shaft alignment to ensure it stays within the coupling’s allowable limits.

3. Corrosion: While stainless steel is corrosion-resistant, it is not immune to corrosion, especially in harsh environments with exposure to corrosive substances. Regular cleaning and maintenance can help prevent corrosion-related failure.

4. Fatigue: Repeated cycles of loading and unloading can cause fatigue failure in the coupling. Ensure that the coupling’s rated fatigue life matches the application’s requirements and replace worn-out couplings promptly.

5. Installation Errors: Improper installation, such as insufficient tightening of set screws or improper keyway fitting, can lead to coupling slippage and failure. Follow the manufacturer’s guidelines for correct installation procedures.

6. Contamination: Foreign particles or debris can get trapped between the coupling’s mating surfaces, leading to uneven loading and premature wear. Keep the coupling and surrounding area clean to avoid contamination-related issues.

7. Temperature Extremes: Extreme temperature variations can affect the material properties of the coupling and lead to failure. Choose couplings rated for the temperature range of the application.

8. Vibration and Resonance: Excessive vibration or resonance can cause stress concentrations in the coupling, leading to fatigue failure. Dampen vibrations and resonance using appropriate mounting and isolation techniques.

9. Material Defects: Occasionally, manufacturing defects in the stainless steel coupling can cause premature failure. Source couplings from reputable manufacturers with a track record of quality and reliability.

Preventive Measures: To prevent failure and ensure optimal performance, consider the following preventive measures:

  • Choose the right coupling type and size for the application’s torque and load requirements.
  • Regularly inspect and maintain the coupling, checking for signs of wear, misalignment, or contamination.
  • Ensure proper installation following the manufacturer’s guidelines.
  • Monitor operating conditions and address any unusual vibrations or temperature variations promptly.
  • Perform regular shaft alignment checks to avoid excessive misalignment.
  • Use protective measures such as seals or covers to prevent contamination and corrosion.
  • Monitor coupling fatigue life and replace worn-out couplings before they reach their fatigue limit.

By understanding the potential causes of failure and implementing appropriate preventive measures, users can increase the reliability and longevity of stainless steel couplings in their applications.

stainless steel coupling

Industry Standards and Certifications for Stainless Steel Couplings

Yes, there are industry standards and certifications that govern the manufacturing and performance of stainless steel couplings. These standards ensure that the couplings meet specific quality and safety requirements for various applications.

Some of the common industry standards and certifications for stainless steel couplings include:

  • American National Standards Institute (ANSI): ANSI sets standards for various industrial components, including couplings. ANSI standards ensure the couplings’ dimensional accuracy, material quality, and performance characteristics.
  • International Organization for Standardization (ISO): ISO provides globally recognized standards for couplings, among other products. ISO standards cover areas like coupling design, materials, and manufacturing processes.
  • American Society for Testing and Materials (ASTM): ASTM standards define the material properties and testing procedures for stainless steel couplings, ensuring their durability and reliability.
  • European Committee for Standardization (CEN): CEN develops European standards for couplings, adhering to the European Union’s regulations for quality and safety.
  • Underwriters Laboratories (UL): UL is a certification organization that tests and certifies couplings for compliance with safety and performance standards. UL-listed couplings have undergone rigorous testing and evaluation.

When selecting stainless steel couplings, it is essential to ensure that they comply with relevant industry standards and carry appropriate certifications. These standards and certifications provide assurance of the coupling’s quality, performance, and safety, making them suitable for specific applications.


editor by CX 2024-02-05

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