SHIHANG COPPER NICKEL FLANGES

Copper Nickel Flanges Standard Table

Shihang Copper Nickel Flanges

DIN Standard Copper Nickel Flanges

DIN standard flanges are most common standard in shipbuilding.

There are four main standards as below:

• DIN 86037 Composite Weld Neck Flanges
• DIN 86036 Composite Slip On Flanges
• DIN 86033 Copper Nickel Slip On Flanges
• DIN 2632/2633 Copper Nickel Weld Neck Flanges

The pressure rate in DIN is 10 bar and 14 bar.

Material: it can be named as CW352h and Cuni10fe1.6mn. It is one of the copper nickel alloy.

The DIN standard material requirement like tolerance is stricter than other standards.

EEMUA 145 Standard Copper Nickel 7060X Flanges

EEMUA 145 standard copper-nickel flanges are normally used on the marine and offshore structure.

There are four main styles as below:

• Composite Weld Neck Flanges
• Composite Slip On Flanges
• Copper Nickel Slip On Flanges
• Copper Nickel Weld Neck Flanges

The pressure rate in DIN is 16 bar and 20 bar.

Material: it can be named as UNS 7060X

ASME B16.5 Copper Nickel C70600 Flanges

ASME B16.5 standard C70600 flanges are mainly used on the oil field.

There are five main flange type as below:

• Copper Nickel Weld Neck Flanges
• Copper Nickel Slip On Flanges
• Copper Nickel Socket Weld Flanges
• Copper Nickel Threaded Flanges
• Copper Nickel Blind Flanges

The pressure rate in copper nickel field are : Class 150 and Class 300

Thickness: Sch5s, Sch10s, Sch40s, Sch80s.

Material: ASTM B151 UNS C70600 / ASTM B151 UNS C71500

Copper Nickel Flanges Type

Composite Weld Neck Flanges

Shihang , as one of the world class china copper nickel flanges manufacturer and supplier.

Shihang can produce copper nickel composite weld neck flanges.

Composite weld neck flanges also named as cuni composite flanges.

Shihang composite weld neck flange are made of two parts.

One is copper nickel inner flanges , it can be named as copper nickel collar, copper nickel stub end.

Copper Nickel Stub Ends Shipbuilding

The others is the carbon steel outer flange, also named as carbon steel loose flange or backing flange.

The copper nickel  collar flange is butt welded with copper nickel pipes , the backing flange can be active.

CuNi welding neck collar is the sealing surface, the role of the backing flange is to press them.

Because of collar is blocked, backing flange does not contact with the media.

This flange connections are applied, in low-pressure and non critical applications, and is a cheap method of flanging , normally used in shipment.

In general, use composite weld neck flanges in one of three situations:

• Cost savings. When the material of the pipe is special and the price is expensive, welding the flange of the same material is costly.
• Inconvenient to weld or inconvenient to process or require high strength.
• Easy to construction.

Disadvantages of using composite weld neck flanges:

• The pressure is low. The pressure on shipment building is low, so composite weld neck flanges are very popular on shipment building.
• The strength of the solder ring is low

Actually , composite weld neck is most common flange on shipbuilding.

It can save the weight of ship and reduce the cost.

If you want to customized copper nickel stub ends or get copper nickel stub ends quotation,

Please feel free to contact us.

Composite Slip On Flanges

Shihang , as one of the world class copper nickel flanges manufacturer and supplier.

Shihang can also produce copper nickel composite slip on flanges.

Shihang composite weld neck flange are made of two parts

One is copper nickel inner flanges , also named as copper nickel collar, copper nickel stub end.

The others is the carbon steel outer flange, also named as loose flange or backing flange.

Composite slip on flanges are similar as composite weld neck flanges.

It is mainly for copper nickel flange shipbuilding.

Inner Flange – Composite Slip On Flanges

The different between composite slip on flanges and composite weld neck is the connection with the copper nickel pipes, butt weld and slip on weld.

Shihang Stock List Of Copper Nickel Composite Slip On Flanges

• inner flange – copper nickel composite slip on flange – DIN 86036
• inner flange – copper nickel composite slip on flange – EEMUA 145
• A105N with galvanized Outer Flange Composite Slip On Flange DIN 86036
• A105N with galvanized Outer Flange Composite Slip On Flange EEMUA 145

Copper Nickel Weld Neck Flanges

Shihang , as one of the world class copper nickel weld neck flanges factory and supplier, also produce copper nickel weld neck flanges.

Shihang copper nickel weld neck flanges are a kind of copper nickel flanges, which refers to a flange with a weld neck and transition of a round pipe and welded to the pipe.

Copper nickel pipe flanges attach by welding the pipe to the neck of the flange.

This transfers stress from the flange to the pipe instead. It also reduces the stress concentration from the base of the hub.

Weld neck flanges are often used for applications where high pressure is a factor.

The inside diameter of the flange is designed to match the pipe’s inside diameter.

Weld Neck Pipe flanges with a hub have published specifications that range from 1/2″ thru 24″.

The difference between copper nickel weld neck flanges and copper nickel slip on flange is that there is a long, inclined high-necked flange between the flange and the pipe-welded part of the flange, and the wall thickness of this high-necked part.

The gradual transition to the wall thickness in the height direction improves the discontinuity of the stress and thus increases the copper nickel flanges strength.

Shihang copper nickel weld neck flanges are mainly used in harsh working conditions, such as pipes where the pressure or temperature fluctuates greatly, such as high temperature and high pressure, when the stress on the flange is increased due to thermal expansion of the pipe or other loads. Subzero temperature pipeline.

The copper nickel weld neck flange is not easy to be deformed, sealed, and widely used. The nominal pressure is about PN1.0MPa~PN25.0MPa.

Shihang copper nickel weld neck flanges can be divided into the following types according to the sealing surface: flat face flanges, raised face flanges.

Copper nickel weld neck flange application scope

Copper Nickel 24 Inch Flanges

Shihang copper nickel weld neck flanges are not easy to be deformed, sealed, and widely used.

It has corresponding rigidity and elasticity requirements and reasonable butt weld thinning transition.

The distance from the weld joint to the joint surface is large, and the joint surface is not deformed by the welding temperature.

It takes more complicated Sludge body structure, suitable for pipelines with high pressure or temperature fluctuations or high temperature, high pressure and low temperature pipelines, generally used for the connection of pipelines and valves with PN greater than 10 bar; also used for conveying expensive, flammable and explosive Medium on the pipeline.

If you want to get copper nickel weld neck flanges quotation and price list , please feel free to contact us : sales@shshihang.com

Shihang Stock List Of Copper Nickel Weld Neck Flanges

• DIN 2632/2633 – copper nickel solid weld neck flange
• EEMUA 145 – copper nickel solid weld neck flange
• ANSI B16.5 – copper nickel solid weld neck flange

Shihang is one of the world class copper nickel slip on flanges manufacturer and supplier.

Copper nickel slip on flanges has a low neck height, which improves the rigidity and load-bearing capacity of the copper nickel flange.

Compared with copper nickel weld neck flanges, the welding work is large, and it will cost more copper nickel welding rods.

 

Copper Nickel Slip On Flanges

 

Slip-on plate pipe flange actually slip over the pipe. The pipe flanges are typically made with an inside diameter of  the pipe flange slightly larger than the outside diameter of the pipe.

This allows the flange to slip over the pipe  but to still have a somewhat snug fit.

Slip-on pipe flanges are secured to the pipe with a fillet weld at the top and  the bottom of the slip-on pipe flanges. These pipe flanges are also further catagorized as a ring.

The high temperature and high pressure and repeated bending and temperature fluctuations cannot be avoided.

However, the on-site installation is more convenient, and the welding seam kneading process can be omitted,

So the copper nickel slip on flanges are popular.

Shihang can also customized copper nickel slip on flanges if you can supply the copper nickel slip on flanges drawing.

Shihang Stock List Of Copper Nickel Slip On Flanges

• DIN 86033 – copper nickel solid slip on flange
• EEMUA 145 – copper nickel solid slip on flange
• ANSI B16.5 – copper nickel solid slip on flange

Shihang is an din slip on flanges standard supplier with eemua and asme standard. DIn slip on flanges are mainly used on shipbuilding.

If you have the din slip on flanges quotation or want to get the din slip on flanges standard price list,

Please feel free to contact us.

Copper Nickel Socket Weld Flanges

Shihang , as one of the world class copper nickel flanges manufacturer and supplier , also produce copper nickel socket weld flanges.

Copper Nickel Socket Weld flanges were initially developed for use on small-size high pressure piping.

Their static strength is equal to Slip On flanges, but their fatigue strength 50% greater than double-welded Slip On flanges.

The connection with the pipe is done with one fillet weld, at the outside of the flange. But before welding, a space must be created between flange or fitting and pipe.

Shihang copper nickel socket flange ’s basic shape is the same as copper nickel slip on flanges. That is, a certain bore hole is formed in the inner hole of the 90/10 copper nickel flange shipbuilding.

The pipe is inserted into the bore hole and welded.

Welding a circle of welds on the back of the flange, due to gaps between the socket flange and the groove, easy to produce corrosion,

if a seam is welded inside to avoid such corrosion.

Shihang copper nickel socket weld flanges welded on both inner and outer sides have a fatigue strength that is 5% greater than copper nickel slip on flanges and the same static strength.

When using copper nickel socket weld flange, its inner diameter needs to be the same as the inner diameter of the pipe. The socket weld flange is only suitable for pipes with a nominal diameter of 150 ( 4 inch ) or less.

If you want to get copper nickel socket welding flanges quotation and price list , please feel free to contact us : sales@shshihang.com

Shihang Stock List Of Copper Nickel Socket Weld Flanges

• ASME B16.5 – copper nickel solid socket weld flange

Copper Nickel Threaded Flanges

Shihang , as one of the world class copper nickel flanges manufacturer and supplier , also produce copper nickel threaded flanges.

Copper Nickel threaded flange is the flange of the hole into the pipe thread, and with a threaded pipe supporting the realization of the connection, it is a non-welded flange.

Compared with butt weld flange , slip on flange and socket weld flange ,the installation of threaded flange is easier ,it can be allowed to use in some of non-welding pipe line. The most common threaded type is bspt & npt .However, it is advisable not to use threaded flanges in the event of a sudden change in pipe temperature or a temperature above 260 ° C below -45 ° C to avoid leakage.

Shihang copper nickel threaded flanges are made by machining the inner bore of a flange into a pipe thread, and are connected to a threaded pipe to make a connection.

This is a non-welding flange. Compared with the copper nickel weld neck flanges and copper nickel slip on flanges, the copper nickel threaded flanges are easy to install and maintain, and can be used on pipelines that are not allowed to be welded on site.

But in the pipeline temperature changes sharply or the temperature is higher than 20 °C below -45 °C conditions. We do not recommend using the copper nickel threaded flange to prevent leakage.

Threaded Type: NPT, BSPT

The sealing surface of the copper nickel threaded flange has two types, raised face and flat face.

Take into account the structural characteristics of the copper nickel threaded flange.

Therefore, it is not suitable for flammable/explosive and highly hazardous and extremely hazardous applications.

Nuclear pressure is small, such as air-conditioning water systems, etc., which can be used safely.

If you want to get copper nickel threaded flanges quotation and price list , please feel free to contact us : sales@shshihang.com

Shihang Stock List Of Copper Nickel Threaded Flanges

• ASME B16.5 – copper nickel solid threaded flange

Copper Nickel Blind Flanges

Shihang , as one of the world class copper nickel flanges manufacturer and supplier , also produce copper nickel blind flanges.

The middle of the blank flange is solid, surrounded by bolt holes, copper nickel  blind flanges can be either flat or raised.

Copper Nickel Blind Flanges

In short, the purpose of copper nickel blind flangs is to block the copper nickel pipeline, it is the material inside the pipe will not overflow, generally used at the end of the water supply branch.

There is a temporary part of the pipe segment to be used for temporary blockade, some directly with the valve, some of the original pipe is now unused, use copper nickel copper nickel blind flanges.

If you want to get copper nickel blind flanges quotation and price list , please feel free to contact us : sales@shshihang.com

Shihang Stock List Of Copper Nickel Blind Flanges

• ASME B16.5 – copper nickel solid blind flange

Copper Nickel Flanges Chemical Composition

Material Analysis Tester

1.Comparison table of International Standard Specifications for CuNi 90/10 flanges

 2.Comparison table of International Standard Specifications for copper nickel 70/30 Flanges

Copper Nickel Flanges Physical Properties

Copper Nickel Pipe Mechanical Properties

Copper Nickel Flanges Application

The applications of copper-nickel flanges are widely found among different industries. They are used in

• Shipbuilding: Copper nickel pipe flanges shipbuilding , especially din standard copper nickel flanges. These projects are based on sea or river where flanges play the vital role to protect pipe fittings from dangerous water substances.
• Desalination plants: It is commonly used in agriculture, minerals and metallurgy projects where these flanges protect objects from damages of water, sand, and defective soil ingredients.
• Power Generation: The plants and projects established to create power rely on such flanges because these nickel-copper flanges are sturdy enough to work in highly corrosive environments.

However, other industries where such flanges are widely used are seawater projects, armament industry, hulls of ships and boats.

Copper Nickel Flanges Benefits

• Solid and extremely durable.
• Easily fixed and modified with pipe fittings.
• Extend Pipe Lifecycle
• Resistant to water and other corrosive ingredients
• It can perform efficiently under corrosive environments.
• Prevents antifouling substances to stick with the object
• High Quality
• Economical

Copper Nickel Flanges Manufacture

The manufacturing process of copper nickel forged flange:

The high quality copper nickel flange forging process usually consists of the following procedures, including the selection of high-quality steel stock for blanking, heating, forming, and cooling after forging.

The method of forging can be classified as

• open-die drop forging,
• impression-die forging and
• loose tooling forging.

Different copper nickel flange forging methods are selected according to the mass of the forged parts as well as the manufacturing quantity.

Open-die drop forging has a relatively low production rate and high machining allowances but can be completed through relatively simple tools which are mostly universal.

Therefore, it is widely used for the forging of parts with relatively simple shapes in small numbers.

For example , the end user need 2 piece of 24” copper nickel slip on flanges , we will use open die drop forging method to finish the flange foring.

The manufacturing equipment for open-die drop forging includes the pneumatic hammer, the steam-air hammer as well as the hydraulic press, which are suitable for the forging of parts with small, medium and large sizes respectively.

Impression-die forging has a higher production rate. The operation is relatively simple, which makes mechanization and automation easy to realize.

Impression-die forged parts enjoy high dimensional precision and low machining allowances and come with more reasonable microstructure, which improves their durability.

Open-die drop forging

During the open-die drop forging process, the forged part is shaped from the stock copper nickel bar through a series of basic procedures, which includes upsetting, drawing out, piercing, bending, and cutting, etc.

copper nickel flange open-die drop forging

1. Upsetting is the procedure when the stock copper nickel bar will be axially hammered, which decreases its length and increases the area of its cross section.This procedure is usually used in the forging of gears and other disc-shaped parts. Upsetting can also be classified as overall upsetting and local upsetting.
2. Drawing out is the procedure when the stock material is lengthened and its cross- sectional area is decreased. It is often used in the manufacturing of shafts, such as lathe spindles, and connecting rods.
3. Piercing is the procedure when the stock material is pierced and thorough or non-thorough holes are created.
4. Bending is the procedure when the stock material is bended by a certain angle or into a certain shape.
5. Twisting is the procedure when a certain part of the stock material is twisted by a certain angle relative to the remaining part.
6. Cutting is the procedure when the stock material is divided or the a certain part is removed.

Impression-die Forging

Impression-die Forging is the process when the heated stock is placed and formed in the forging die which is fixed on the forging equipment.

copper nickel flange impression die forging

1. The fundamental procedures of the impression-die forging include: blanking, heating, pre-forging, finish-forging.

Procedures such as upsetting, drawing out, bending, piercing and forming are often adopted.

2. Equipment such as die forging hammer, hot die forging press, horizontal forging and upsetting machine and friction press are often adopted for the impression-die process.

Basically, it can be stated that copper nickel flanges manufactured through the impression-die forging process enjoy better quality due to their higher density crystal structure and higher strength, and also come at a higher price.

Copper Nickel Forged Flanges Characteristics

Compared to the cast parts, the microstructure and mechanical properties of metal can be improved through forging.

The thick dendrite arms and cylindrical grains can be converted into uniform and small equiaxial recrystallized grains through the transformation caused by hot working, which removes segregation, porosity, pores and wrapped slag, and improves the ductility and mechanical properties.

The mechanical properties of cast parts are worse than their forged counterparts. In addition, copper nickel flange forging can ensure the continuity and consistency of the metal microstructure along the inside and the surfaces of the parts. It guarantees the mechanical properties and ideal durability.

Therefore, the performance of parts manufactured through processes such as precision forging, cold extrusion and warm extrusion are far superior than those of cast parts.

Forged parts are formed by exerting pressure on the metal so that the desired shape or the appropriate compressive force can be acquired through plastic deformation.

Such kind of pressure is achieved typically through a hammer or a press. During the forging process, delicate grain structure can be constructed, which improves the physical properties of the metal.

In real-life applications, an appropriate design should align the grains with the main compressive force.

The cast parts are metal objects created through all kinds of casting processes, when the molten metal created through smelting is poured, injected or sucked into a casting mould and then cooled down, which generates certain shapes, dimensions and mechanical properties after procedures such as shakeout, cleaning and after treatment.

Classification of Copper Nickel Flange Forging

The forging process can be classified according to the forming method and the deformation temperature. In terms of the forming method, the process can be classified as forging and stamping while in terms of the deformation temperature, it can be classified as hot, cold, warm and isothermal forging and stamping, etc.

Hot Forging

Hot forging is conducted above the recrystallization temperature of the metal, which improves its ductility as well as the inner quality of the parts, making it unlikely to crack. The high temperature can also reduce the resistance of deformation, which can reduce the necessary capacity of the forging equipment.

copper nickel flange hot forging

However, the hot forging process has complicated procedures and the parts have low precision and coarse surfaces and are also vulnerable to oxidation, decarburization and burning loss.

Cold Forging

Cold forging is conducted below the recrystallization temperature of the metal and is usually referred to as the forging and stamping process conducted in normal temperature while the process conducted between normal temperature and the recrystallization temperature is called warm forging and stamping. The parts manufactured through warm forging and stamping enjoys high dimensional precision and smooth surfaces as well as relatively low resistance of deformation. And the parts manufactured through cold forging and stamping under normal temperature also enjoy high dimensional precision and smooth surfaces while few machining procedures are involved, which makes the method suitable for automated production. Many cold forged and cold stamps parts can be directly used without the need of addition machining. However, during the cold forging process, due to low plasticity of metal, the material may be vulnerable to cranks during deformation and due to the high resistance of deformation, high capacity forging and stamping equipment is required.

Isothermal Forging

Isothermal forging and stamping is the method when the temperature of the stock remains constant during the entire forming process. This method is designed to fully utilize the high plasticity property of certain metal under certain temperature or to acquire certain microstructure and performance.

flange isothermal forging equipment

Due to the fact that in the isothermal forging and stamping process, both the mold and the stock need to be kept at the same constant temperature, the cost is relatively high and therefore this method is only used for special forging and stamping processes, such as superplastic forming.

For now , copper nickel flanges forging are used hot forging.

Copper Nickel Flanges Packaging

Normal Marking: Size , Materials , Standard , Heat No..

You can also contact us for customized marking.

Packaging: Shihang emphasis on the packaging to ensure that there is no damage during transportation.

Copper Nickel flanges are packed in seaworthy wooden case.

Copper Nickel Flanges Inspection

Shihang Copper Nickel Flanges Stock

• Copper Nickel Composite Weld Neck Flanges

Shihang Copper Nickel Flanges Main Market

Copper Nickel CuNi 90/10 C70600 Flanges Main Export Market

• Asia
• Western Europe
• North America
• Australasia
• Mid East