What is a Fire Grooved Pipe Fitting?
Fire Grooved pipe fittings are a kind of connecting parts used in fire pipe systems. It realizes a fast, safe and reliable connection between pipes through a special connection method – groove connection. The main functions of grooved pipe fittings are connection, sealing, redirection, diversion, support, etc. According to its function, it can be divided into two main categories:
1. Pipe fittings that play the role of connection sealing: including grooved rigid couplings, flexible joints, mechanical tees and grooved flanges.
2. Pipe fittings that play the role of connection transition: including elbows, tees, crosses, reducers, blind plates, etc.
Fire Grooved pipe fittings are usually made of ductile iron, which has high mechanical strength and fire performance, and is suitable for various application scenarios in fire piping systems.
What are the Foreign Standards for Fire Grooved Pipe Fittings?
The acceptance and use of fire fighting grooved fittings need to follow certain international standards and industry norms. Here are a few common international standards:
1. ANSI/AWWA C113/C113M-2018 “Grooved Pipe Joints”: The American Hydraulic Engineering Association standard, which specifies the technical requirements and test methods for grooved pipe joints.
2. EN 1552-1:2008 Buried piping systems – Part 1: Pipe joints: European standard, specifying the technical requirements and test methods for pipe joints in buried piping systems.
3.ISO 14692-1:2018 Oil and gas industry – Pipeline transmission systems – Part 1: Pipe joints: The International Organization for Standardization standard specifies the technical requirements and test methods for pipe joints in pipeline transmission systems in the oil and gas industry.
In the production process of grooved pipe fittings, the four surface treatment processes of electrophoresis, dipping, powder spraying and galvanizing have their own unique characteristics and differences, and the following is a detailed comparison of these four processes:
Electrophoresis
- Definition: Electrophoresis is a special coating method in which the conductive coated material is immersed in an electrophoretic paint tank with a relatively low concentration diluted with water as an anode (or cathode), the corresponding cathode (or anode) is set in the tank, and the direct current is indirectly applied at the two poles for a period of time, and a uniform and fine coating film that is not dissolved by water is deposited on the surface of the coated object.
- Peculiarity:The paint layer can completely cover the hidden area, and the thickness is uniform.It will not strip paint after bending and squeezing.The utilization rate of the coating is high, and the process is safer and more environmentally friendly.
Dipping paint
- Definition: Dipping paint is a process in which a workpiece is completely immersed in a paint solution so that the paint adheres to the surface of the workpiece.
- Peculiarity:Dipping paint provides a relatively uniform coating, especially for workpieces with complex shapes.However, dipping paint may produce more paint waste and is relatively less environmentally friendly.
Powder Spraying (Plastic Spraying)
- Definition: Powder spraying, also known as plastic spraying, is the process of using special spraying equipment to adsorb a special solid powder coating on the surface of the workpiece after electrostatic treatment, and then send it to a high-temperature baking room for baking and curing to form a solid coating.
- Peculiarity:After spraying, the appearance is varied, such as high-gloss, matte, frosted, etc.The coating is thick, and the wear and corrosion resistance is good.The spraying process is relatively complex and requires specialized equipment and high technical requirements.
Galvanize
- Definition: Galvanizing is the process of using the principle of electrolysis to coat a layer of zinc on the surface of a metal.
- Peculiarity:The galvanized coating provides good protection against corrosion.
The galvanized metal surface has a silvery-white luster, which is beautiful and generous.However, the galvanized layer may gradually peel off or corrode due to the environment and conditions of use.
Summarize the Comparison
| Process | Electrophoresis | Dipping | Powder spraying (spraying) | Galvanizing |
|---|---|---|---|---|
| Coating Type | Varnish | Varnish | Powder Coating | Metal Coating |
| Coating uniformity | Good | So so | Good | Good |
| Coating thickness | moderate | moderate | Thicker | Thinner |
| Corrosion resistance | Better | So so | Good | Good |
| Variety of appearances | So so | So so | abundant | singleness |
| Eco-friendliness | Good | Poor | Better | So so |
| Process complexity | moderate | Simple | complex | moderate |
What are the Certifications of Fire Grooved Pipe Fittings?
In order to ensure the quality and performance of fire Grooved pipe fittings, many countries and regions have special certification bodies to certify them. Here are some common international certifications:
1. UL certification: Underwriters Laboratories Inc. certification to ensure that the products meet safety and quality standards.
2.FM certification: Factory Mutual Research Corporation certification ensures that products meet fire and safety standards.
3. CE certification: European conformity certification (Conformité Européenne) to ensure that the products comply with EU safety, health, environmental protection and consumer protection regulations.
4. TUV certification: Technischer Überwachungs-Verein certification to ensure that the products meet safety and quality standards.
How to Choose Good Fire Grooved Pipe Fittings?
The following aspects need to be paid attention to when purchasing good fire Grooved pipe fittings:
1. Material: High-quality fire Grooved pipe fittings are usually made of ductile iron, which has high mechanical strength and fire performance.
2. Standards: Ensure that the selected products comply with relevant international standards and industry norms, such as ANSI, EN, ISO, etc.
3. Certification: Choose products with international certification, such as UL, FM, CE, TUV, etc., to ensure the safety and quality of the products.
4. Brand: Choose products from well-known brands, which usually have high market recognition and good after-sales service.
5. Suppliers: Choose suppliers with good reputation and thoughtful service to ensure the stable supply of products and after-sales service in place.
Through the above points, you can better choose the right fire Grooved pipe fittings to ensure the safety and reliability of the fire pipe system.