China Standard Restraint Multi-Function Single-Section Stainless Steel Pipe Coupling

Product Description

1. Briefs : 

*  Mainly used for varied pipe connection
*  Specific designed for plastic pipe such as PE, PVC, PPR, HDPE pipe 
*  Suit for water, gas, industry pipeline 

2. Features :

*   used for connection of 2 plastic pipe or the connection between plastic pipe and metalic pipe
*   also used for the leaking pipe repair 
*   allow angular deflection and provide restraint 
*   anticorrosive
*    easy installation and disassembly 

3.  Dimension Sheet : 
 

S/N O. D Range Working Pressure Clamp Length (mm) Size D Size H Bolt Bolt Torque
  mm bar Normal(L1) Extended(L2) mm mm mm Nm
1 17-19 32 57   35 55 M6 10
2 21-23 32 57   45 65 M6 10
3 24.5-25.5 32 57   50 70 M6 10
4 26-28 32 57   50 70 M6 10
5 31.5-32.5 32 57   55 75 M6 10
6 33-35 32 57   55 75 M6 10
7 39.5-41.5 32 57   55 75 M6 10
8 42-44 32 57 100 65 85 M6 15
9 44-45 32 57 100 66 86 M6 15
10 47-49 32 57 100 70 90 M6 15
11 53.6-54.6 32 57 100 70 90 M8 30
12 56.3-57.7 32 57 100 80 100 M8 30
13 59-62 32 80 139 85 105 M8 30
14 62-64 32 80 139 85 105 M8 30
15 75-78 28 80 139 100 120 M8 30
16 79-81 28 80 139 100 120 M8 30
17 88-92 28 107 203 110 130 M10 50
18 106-110 28 107 203 130 150 M10 50
19 109-111 28 107 203 130 150 M10 50
20 112-116 28 107 203 135 155 M10 50
21 116-119 28 107 203 140 160 M10 50
22 123-126 28 107 203 150 185 M10 50
23 131-134 28 107 203 160 190 M10 50
24 137-143 28 116 203 165 195 M12 80
25 157-161 24 116 203 185 215 M12 80
26 163-167 24 116 203 190 215 M12 80
27 166-170 24 116 203 195 225 M12 80
28 168-172 24 116 203 195 225 M12 80
29 198-201 16 155 255 240 270 M14 100
30 217-221 16 155 255 250 280 M14 100
31 250-254 16 155 255 285 315 M14 100
32 271-275 16 155 255 305 335 M14 100
33 313-317 14 155 255 340 375 M14 100
34 323-327 14 155 255 355 385 M14 100
35 354-358 14 155 255 385 420 M14 100
36 375-379 14 155 255 410 440 M14 100

Note: we accept your specific dimensions which are not included in the above list .

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stainless steel coupling

How Does the Grade of Stainless Steel Used in Couplings Impact Their Performance?

The grade of stainless steel used in couplings has a significant impact on their performance and suitability for specific applications. Stainless steel is an alloy that contains varying amounts of elements like chromium, nickel, and molybdenum, which give it different properties. The most common grades of stainless steel used in couplings are:

  1. Austenitic Stainless Steel (e.g., 304, 316): Austenitic stainless steel is the most widely used grade in couplings due to its excellent corrosion resistance, high ductility, and non-magnetic properties. Grade 304 is commonly used in general-purpose applications, while grade 316 offers higher corrosion resistance, making it suitable for more aggressive environments like marine or chemical industries.
  2. Ferritic Stainless Steel (e.g., 430, 446): Ferritic stainless steel has lower corrosion resistance compared to austenitic grades but offers better resistance to stress corrosion cracking. It is used in certain coupling applications where moderate corrosion resistance is sufficient.
  3. Martensitic Stainless Steel (e.g., 410, 420): Martensitic stainless steel is known for its hardness and strength. It is used in couplings that require higher mechanical properties, but it may have reduced corrosion resistance compared to austenitic grades.
  4. Duplex Stainless Steel (e.g., 2205, 2507): Duplex stainless steel combines the properties of austenitic and ferritic grades, offering high strength and better resistance to stress corrosion cracking and pitting. It finds applications in critical coupling systems where both strength and corrosion resistance are essential.

The choice of stainless steel grade depends on the specific requirements of the coupling application. Factors such as environmental conditions, exposure to corrosive substances, temperature, and mechanical stresses must be considered when selecting the appropriate grade. For example, couplings used in marine environments may require a high-grade austenitic stainless steel like 316 to withstand saltwater corrosion, while couplings in food processing may use grade 304 for its hygienic properties and general corrosion resistance.

In summary, the grade of stainless steel used in couplings directly influences their performance in terms of corrosion resistance, strength, ductility, and suitability for various applications. Proper selection of the stainless steel grade ensures that the couplings deliver reliable and long-lasting performance in their intended operating conditions.

stainless steel coupling

Stainless Steel Couplings in Food Processing and Medical Equipment

Yes, stainless steel couplings are well-suited for use in food processing and medical equipment due to their corrosion-resistant properties. Stainless steel is a family of alloyed steels containing a minimum of 10.5% chromium, which forms a thin, passive oxide layer on the surface of the material. This oxide layer, known as the “passive layer,” provides excellent corrosion resistance and protects the stainless steel from chemical and environmental attacks.

In food processing and medical equipment applications, maintaining a hygienic environment is essential to ensure product quality and patient safety. Stainless steel couplings offer several advantages in these industries:

  1. Corrosion Resistance: Stainless steel couplings are resistant to rust, corrosion, and staining, even when exposed to harsh chemicals and cleaning agents used in food processing and medical settings. This property ensures the couplings’ integrity and prevents contamination of the processed food or medical products.
  2. Sanitary Design: Stainless steel couplings can be designed with smooth surfaces and rounded edges, reducing the potential for bacterial growth and making them easy to clean and sanitize. The absence of crevices and threads prevents the accumulation of food particles, debris, or contaminants.
  3. High Strength and Durability: Stainless steel couplings offer high strength and durability, making them suitable for heavy-duty applications in both food processing and medical equipment. Their ability to withstand wear, impact, and frequent cleaning cycles ensures a long service life.
  4. Chemical Compatibility: Stainless steel couplings are compatible with a wide range of chemicals and cleaning agents commonly used in food processing and medical facilities. They do not leach harmful substances into the processed food or medical products.
  5. Regulatory Compliance: Stainless steel is often used in food processing and medical equipment because it meets various industry standards and regulatory requirements, such as FDA (Food and Drug Administration) approval for food contact and ISO certifications for medical equipment.

Due to these benefits, stainless steel couplings are commonly used in food processing machines, pharmaceutical manufacturing equipment, medical devices, and other applications where corrosion resistance, cleanliness, and compliance with stringent regulations are critical.

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.

China Standard Restraint Multi-Function Single-Section Stainless Steel Pipe Coupling  China Standard Restraint Multi-Function Single-Section Stainless Steel Pipe Coupling
editor by CX 2024-02-10

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