What are Aluminum Pipe and Fittings for Shipbuilding

 In the field of marine engineering, the pipeline system is like the blood vessels of the human body, which undertakes the core functions of fluid transportation and energy transfer. As the "joints" of this system, the performance of marine pipe fittings directly affects the safety and operation efficiency of the ship.

Classification of marine pipe fittings

Connection method: Socket-type pipe fittings are directly nested and connected through the pipe mouth, which is suitable for low-pressure environments; threaded pipe fittings are quickly installed by spiral bite, which is common in small pipes; flange pipe fittings are connected with sealing gaskets by bolts, which are suitable for high-pressure and large-diameter scenes; welded pipe fittings are permanently sealed by welding, which are mostly used for hull structural parts.

Functional use: In addition to basic connectors such as elbows and tees, there are also special components such as reducers for reducing diameters, valves for controlling flow, and brackets for fixing pipelines, forming a complete pipeline ecosystem.

Material characteristics: Carbon steel is the mainstream with high strength and low cost, stainless steel is used in seawater systems with its corrosion resistance, and copper alloys are outstanding in heat exchange equipment. Aluminum pipe fittings, with their light weight and high strength, have emerged in the lightweight process of ships.

Aluminum elbows

Among the different types of aluminum pipe fittings, aluminum elbows are very important. According to the bending angle, they can be divided into 90 degree aluminium elbow, 45 degree elbows, and 180 degree elbows. Non-standard angles such as 30° and 60° meet the needs of complex layouts. The curvature radius of the long radius elbow is ≥1.5D, which can reduce fluid impact (D is the pipe diameter).

Applications of aluminum elbows

Cooling system: In the ship engine cooling circuit, aluminum elbows accelerate heat exchange with their thermal conductivity advantages. Combined with the high strength of 6082 aluminum alloy, they can withstand high temperatures of 150°C and pressures of 3MPa.

Ventilation system: Lightweight aluminum elbows are suitable for ventilation ducts in ship superstructures. While reducing structural loads, their surface treatment process can withstand the humid marine environment.

Special equipment: In the decorative pipes of luxury yachts, anodized aluminum elbows can present a variety of colors, combining functionality and aesthetics. Welcome to inquire types of aluminum pipe and fittings from us directly.

Original Source:https://www.marinealu.com/a/what-are-aluminum-pipe-and-fittings-for-shipbuilding.html

A Popular Choice: Aluminium ROPP Cap

 In the fields of food, medicine, and chemicals, the sealing and convenience of packaging have always been the core concerns of enterprises. Aluminum ROPP caps have become a popular packaging solution in recent years due to their unique material advantages and diversified designs.

1. Performance advantages: a perfect balance between lightweight and reliability

The core advantage of aluminum pp caps comes from their material characteristics. Compared with traditional metal caps, aluminum caps significantly reduce the weight of packaging, and are particularly suitable for consumer products that require portability, such as beverages and health products.

At the same time, aluminum has excellent thermal conductivity, can quickly balance the internal and external temperatures, and effectively protect the stability of the contents, which is particularly suitable for temperature-sensitive medicines or cosmetics. In addition, the high ductility of aluminum alloys enables high-precision molding during processing, ensuring that the bottle cap fits tightly with the bottle body to avoid leakage risks.

2. Flexible size: adapt to diverse needs

The size design of aluminum screw caps is extremely flexible and can meet the customized needs of different industries. The current mainstream specifications in the market cover diameters of 18mm to 28mm aluminum cap, and common models include 20mm, 24mm and 28mm, etc., and the height is usually around 13mm.

This compatibility is due to the standardized production process of aluminum ROPP caps. Through mold adjustment, manufacturers can quickly switch between different specifications while maintaining uniform sealing performance, reducing equipment replacement costs for enterprises and improving production efficiency.

3. Wide applications

Food and Beverage: In the packaging of liquor, mineral water and dairy products, aluminum ROPP caps can not only ensure the sealing of the liquor, but also improve the product grade with retro design. For example, a well-known liquor brand uses aluminum screw caps with glass bottles, which not only retains the traditional charm but also enhances the modern sense.

Medical and health: Oral liquid, vials and other drug packaging have extremely high requirements for asepticity. The precision sealing and easy-to-pull design of aluminum screw caps meet the dual needs of safety and convenience in the medical industry.

Daily chemical products: Shampoo, skin care bottles and other daily chemical products often use aluminum ROPP cap to prevent leakage and improve user experience through adjustable tightness.

Industrial field: The packaging of corrosive substances such as chemical raw materials and liquid alcohol can achieve safe transportation and storage through the combination of aluminum screw caps and anti-corrosion coatings.

Original source: https://www.alubottlecaps.com/a/a-popular-choice-aluminium-ropp-cap.html

What Are Properties of Polysurlyn Coating Aluminum Coil

 With the continuous development of material science, various new composite materials emerge in an endless stream, and polysurlyn laminated aluminum coil is one of the most popular ones. This combination aluminum coil more excellent performance and showing unique advantages in many fields.

1. Excellent protective performance

Triple protection structure: The polysurlyn coating aluminum coil has built an excellent protection system. The first layer of its film is a dense film, like a solid line of defense, which can effectively block moisture penetration. According to experimental tests, there are only 5 small holes in the moisture-proof points among the 10 test points, and its waterproofness far exceeds that of ordinary materials.

The second layer is a one-way water-absorbing film, which is like a diligent "water-absorbing guard" that can absorb water vapor around the aluminum plate and will not release water again, greatly reducing the risk of aluminum oxidation.

The third layer uses a hot pressing process to tightly bond the sarling film to the aluminum coil, which has extremely high peeling strength. Not only can it not be torn off by hand, it will not crack even if it is soaked for 24 hours, ensuring the long-term effectiveness of the protection.

2. Waterproof and anti-penetration

The sarling film itself has no pinhole structure, which makes the waterproof performance of the sarling film aluminum coil extremely outstanding, which can effectively resist the penetration of various liquids and provide a reliable waterproof barrier for the protected objects.

3. Excellent high temperature and weather resistance

High temperature stability: The sarling film is made of a multi-layer composite of polyethylene and sarling polymer. This special structure enables it to withstand high temperature environments. In pipeline insulation projects in high-temperature places such as refineries and power plants, the polysurlyn coating aluminum coil can play a stable role, and can still maintain good bonding performance under harsh conditions such as heat aging and hot water immersion, without problems such as falling off.

4. Chemical corrosion resistance

For chemical substances such as acids and alkalis, the aluminum coil covered with sarling film shows strong tolerance. In highly corrosive industrial scenes such as chemical plants, it can effectively resist the erosion of chemical substances, protect the internal structure from damage, and extend the service life of the facilities.

5. Strong weather resistance

Whether it is scorching sun or cold wind, the aluminum coil covered with sarling film can cope with it calmly. Long-term outdoor use shows its weather resistance advantages, is not easy to fail due to climate changes, and always maintains a good performance state.

6. Enhanced strength

After the sarling film is compounded to the surface of the aluminum coil, the surface hardness and wear resistance of the aluminum coil are significantly improved. During transportation or construction, it can effectively resist scratches and other damage to ensure the integrity and beauty of the material.

7. Reduced flammability

The sarling film itself has low flammability. After being compounded with the aluminum coil, the fire resistance of the coated aluminium coil is further improved, providing a higher safety guarantee for the use environment.

Original Source: https://www.alumhm.com/a/what-are-properties-of-polysurlyn-coating-aluminum-coil.html