Installing Shihang Copper Nickel Slip On Flange is easy and straightforward, simply slip it over pipes, reducers or long elbows, while ensuring a snug fit. Secure Shihang Copper Nickel Slip On Flange using a fillet weld, at the bottom and top of the slip on the flange.

Our Copper Nickel Slip On Flange offers excellent and sufficient strength in all piping systems with zero leakages.

The inside diameter of Shihang Copper Nickel Slip On Flange is slightly larger than the outer diameter of pipes, reducers or long elbows. Our copper nickel flange is easy to align with an existing or new piping system.

Shihang Copper Nickel Slip On Flange is precisely designed to prevent leakages. Unlike Neck Weld Flanges, Shihang Copper Nickel Slip On Flange is cost competitive due to lower cost of material.

Shihang Copper Nickel Slip on Flanges are available as either flat face or raised face, with heights varying from 1/4” to 1/16”.

Shihang is a trusted manufacturer and supplier of Copper Nickel Slip On Flange, with the know-how and experience, to control quality and tight tolerance of copper nickel flanges. Our flanges come in varying pressure rating, thickness, and sizes from DN15 to DN 500.

Our modern production facility can support your custom Copper Nickel Slip On Flange needs.

Shihang team will help you in material selection, CAD drawing and we have a wide range of material stock to support your Copper Nickel Slip On Flange requirement.

Shihang technicians are available 24/7 to answer all your questions on slip on flanges. You can contact us today for a standard and custom copper nickel slip on flange solution.

 

Copper Nickel Slip On Flanges: The Ultimate FAQ Guide

 

 

What is Copper Nickel Slip on Flange?

It is a ring having a bore at the center with bolt holes evenly machined along its circumference. By slipping it over the Cupronickel pipe, you can make a perfect flange connection.

These flanges are made from copper nickel alloy.

Figure 1 CuNi slip on flange

How do DIN and EEMUA Copper Nickel Slip on Flanges Compare?

Copper nickel slip on flanges are available in DIN 86033 with a pressure rating of 10 bar and 14 bar.

On the other hand, EEMUA 145 copper nickel slip on flanges are available in 16 bar and 20 bar.

Although the DIN 86033 and EEMUA 145 are European standards, they have been adopted globally.

What is ASME B16.5 Copper Nickel Slip on Flange?

These are copper nickel slip on flanges that conform to the ASME B16.5 standard specifications.

What is Copper Nickel Slip on Flanges Specification?

Whenever you are specifying Cupronickel slip on flange, you should focus on the standard specification which may include:

• EEMUA Flanges
• DIN Flanges
• JIS Flanges
• ANSI Flanges
• ASME Flanges
• BS Flanges
• EN Flanges

Other specifications for copper nickel slip on flanges include:

1. Size, which may vary from 1/2″ – 24”
2. Flange face type where you can choose either raised face (RF) or flat face (FF)
3. Copper nickel grade

Copper nickel Slip on Flanges come in how may Face Types?

Copper nickel slip on flange comes with either flat face (FF) or raised face (RF).

Which Copper Nickel Grade is Slip on Flange made of?

The material grade for copper nickel pipe will depend on the dimension standard specifications.

You can choose CuNi slip on flange made from either CuNi 70/30 or CuNi 90/10.

Where are Copper Nickel Slip on Flanges used?

You can use Cupronickel slip on flange in shipbuilding, power generation plants, offshore gas platforms, heating and cooling systems, desalination plants, seawater piping, etc.

What Benefits does Copper Nickel Slip on Flanges offer?

1. CuNi slip on flange is more affordable than CuNi weld neck flange
2. Easy to install in the piping system
3. Welding both sides of the copper nickel slip on flange prevents leakages and guarantees high strength
4. Aligning Cupronickel pipe is easier

Why is Cupronickel Slip on Flange used for in Piping Systems?

It provides a cost-effective, reliable and robust flange connection in the piping system.

In seawater or marine applications, it is resistant to biofouling, high stress, corrosion and erosion with good mechanical properties.

How do you Install Cupronickel Pipe Slip on Flanges?

Figure 2 Slip on flange

1. Choose copper nickel pipe with compatible dimensions as that of the copper nickel slip on flange
2. Carefully insert the copper nickel pipe into the copper nickel slip on flange
3. Fillet weld both the top and bottom of the copper nickel slip on flange and pipe
4. Use bolts to assemble the CuNi slip on flange with other components

How do Diameters of CuNi Pipe and Cupronickel Slip on Flange Compare?

The inside diameter of the Cupronickel slip on flange is slightly larger than the outside diameter of the copper nickel pipe you intend to use.

The allowance between the two diameters allows for easy sliding of the CuNi slip on a flange on the pipe.

What are the Critical Copper Nickel Slip on Flange Dimension?

Figure 3 Cupronickel slip on flange dimensions – Photo credits: Hard Hat Engineer

First, the dimensions should conform to standard specifications such as DIN 86033, ASME B16.5 or EEMUA 145/EEMUA 234.

During the design process, specify dimensions as specified in figure 3 above – from A to H.

Remember, the internal diameter of the Cupronickel slip on flange must be slightly larger than the external diameter of the Cupronickel pipe.

What is the difference between Copper Nickel Slip on Flange and Lap Joint Flange?

Copper nickel slip on flange comes as a single piece of component with a bore at the center that can slip over the outer diameter of the Cupronickel pipe or other CuNi pipe fittings.

Figure 4 Copper nickel slip on flange

On the other hand, copper nickel lap joint flange comes as two-piece equipment that tends to resemble CuNi weld neck flange.

It has a stub-end also called sleeve which is basically a short pipe with a bevel, alongside hub.

Unlike the CuNi slip on flange, the section joining the sleeve has a smooth round transition.

CuNi lap joint flange is suitable for piping systems that are dismantled frequently, unlike the CuNi slip on flanges that are used for temporary or permanents systems.

Which Type of Weld is used on Cupronickel Slip on Flange?

Cupronickel slip on flanges are fillet welded on the copper nickel pipes on both outside and inside for better strength.

How Does Copper Nickel Slip on Flange and Weld Neck Flange Compare?

Copper Nickel Slip on Flange	Copper Nickel Weld Neck Flange
Recommended for low-pressure application	Best for high-pressure applications
The flange is fillet welded to Cupronickel pipe	The flange is butt weld to Cupronickel pipe
Virtually flat “ring” with or without a small raised face	Features a tapered hub that can be long or short
Installation cost is low, however, fillet welding may increase the cost	Installation cost is high
Short service life span	Long service lifespan

Figure 5 Slip on vs weld neck flange

How can you Manufacture Cupronickel Slip on Flange?

The manufacturing process involves the following key stages:

• Testing and verifying the quality of copper nickel alloy material
• Cut Cupronickel alloy to suitable sizes
• Subject Cupronickel bar to forging and forming process to make CuNi slip on flange
• Drill/machine bolt holes around the main bore of the Cupronickel slip on flange
• Subject CuNi slip on the flange to heat treatment
• Mark Cupronickel flange with appropriate pressure rating, material grade, dimension standards, batch number, etc.
• Inspect quality, dimension specification, and tolerance of Cupronickel slip on flange
• Pack CuNi slip on flange in seaworthy packaging

Additionally, you should have a quality testing certificate such as MTC EN 10204 3.1 Certificate.