Bimetal Clad Pipe

Bimetal clad pipe is cast with mold vanishing vacuum suction casting cladding process.

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Ni-Hard Wearback Pipes

Ni-Hard Wearback Pipes are engineered for exceptional durability, specifically designed to withstand abrasive materials such as sand, cement, quarry dust, granite dust, sinter dust, slag, coal, and more.

Offering superior wear resistance, these pipes minimize wear on pipe bends compared to conventional materials.

Our range includes standard and special radius plain bends, available with or without replaceable wear-back plates. Featuring standard flanged ends, Ni-Hard Wearback Pipes ensure efficient conveying of abrasive materials. Custom designs can be tailored to meet specific requirements.

Bi metal clad pipe applicable areas

Bi metal clad pipe applicable areas

Because oil and natural gas contains a large amount of corrosive media such as hydrogen sulfide, carbon dioxide and chloride ions, especially the content of corrosive components in the oil and gas medium before pipeline purification in the seabed oil and gas field is high, and some even require heat transfer, and internal corrosion problems are very prominent.

The use of stainless steel or corrosion-resistant alloys in large quantities is not economical. Double metal clad pipes are a good choice.

The bimetal clad pipe structure uses a corrosion-resistant alloy tube (stainless steel or corrosion-resistant alloy) as the inner liner (wall thickness 0.5-3mm) to contact the corrosive medium and carbon steel or low-alloy steel as the outer base pipe to withstand the pressure. low. Generally, the double-metal clad pipe contains 316L austenite stainless steel as the inner liner in the case of containing CO2 medium, and 2205 and 2505 duplex stainless steel can be used as the medium containing CO2 + small amount of chloride, when H2S+CO2 is contained. + Chloride, the inner liner should be 028, G3, INCONEL625 and Inconel825 nickel-base or iron-nickel alloy, in order to ensure the corrosion resistance of the pipeline, but also can choose the titanium alloy and other materials with excellent corrosion resistance as lining. The outer layer material is usually API 5L X42, X50, X60, X70, ASTM-A106GB and A335-P22 and other materials, so as to ensure the strength of the pipeline.

Casing pipe for oil and gas transportation

Choosing stainless steel such as Incoloy625 and Incoloy825 for inner tubes to ensure the corrosion resistance of the pipe. The outer pipe are usually X42, X50, X60, X70, A335-P22 and other materials to ensure the strength of the pipeline. The American Petroleum Association (API) has developed the standard for composite pipes for pipelines,with the serial number API 5LD:Cr-Mo steel,super 13Cr, G3, C028 and other oil well tubes and the nickel-base alloy cladding tubes such as 825, 028.

Boiler

The steel tube for superheater should have high temperature strength under the condition of 650 and 35 MPa steam,excellent surface temperature and corrosion resistance, and inner surface resistance to water vapor oxidation.

Japan Sumitomo metal company choose SUS310S, 35Cr-55Ni, 40Cr-55Ni as outer base tube and 17-14CuMo,Alloy800Has the inner tube,developed super supercritical boiler superheater cladding pipe.

Sandvik,a Sweden Steel Corp successfully developed carbon steel as an inner pipe and Sanicro28 steel with good corrosion resistance as outer pipe. The cladding steel pipe made by Sandvik does not need any change in the boiler structure design and can be used directly.

Waste incinerator

Cladding steel tube for waste incinerator.The outer tube can be made of Sanicro65 alloy, and the inner pipe may be carbon steel or chromium molybdenum steel with resistance to stress corrosion cracking.Europe and the United States have used 2 million meter composite steel pipe since the first installation cladding pipe incinerator superheater and water wall tubes in the 1971.

Heat exchanger

Cladding steel pipe used for heat exchanger should also have good thermal conductivity and a certain strength and corrosion resistance.

Sandvik manufactured cladding pipe with high alloy nickel chromium alloy 800 as the inner tube and the low-alloy steel ASTM A213 Ti2 as the outer pipe.NKK company from Japan made cladding pipe with API 5L-16MnV steel as its outer pipe and NIC42 steel as inner pipe.

Used for wear-resistant steel

A Japan company have made cladding steel pipe with SUS316L corrosion resistant steel for outer pipe,Stellite No12 alloy for inner pipe,after 4 years is still new.They has also been well applied in the pneumatic conveying pipe of other micro powder particles, and the demand is increasing.

Marine environment

Inner pipe:Nickel, Titanium stainless steel or Copper alloy.

Outer pipe:Carbon steel or low alloy corrosion resistant steel.

Cladding pipe used for marine environment made by Japan's Kawasaki is widely used as marine heat exchanger tube and seawater desalination of seawater intake pipe. 

Civil areas

Cold, hot water pipes, direct drinking water pipes, heating, solar energy, ground source heat pump; civil construction water supply pipes, water distribution trunk; air conditioning circulation pipe, fine decoration high-grade commercial housing water pipes.

Industry

Oil and gas pipeline, oil and gas wells casing, sewage return pipe; chemical heat exchanger tube bundle; power desalination water, desulfurization pipeline and other metallurgy, desalination, medicine and chemical industry, sewage treatment, new energy, food processing and other industries.

Axial fans

An axial fan is a type of fan that causes gas to flow through it in an axial direction, parallel to the shaft about which the blades rotate. The flow is axial at entry and exit. The fan is designed to produce a pressure difference, and hence force, to cause a flow through the fan.

Axial fans
Axial fans
Axial fans
Axial fans
Cladded pipe

Advantages

  1. The hardness of a good wear resistance superhard wear alloy is greater than 56 (HRC), which has good wear resistance and thermal stability.
  2. Excellent impact resistance, metal binding and thermal shock resistance KMTBCr28 bimetal composite wear-resistant elbow. The joint surface of the two metals is completely metallurgical, safe and reliable. The coefficient of thermal expansion is equal to that of expansion, shrinkage and crack. The outer wall of the elbow is made of steel tube and the inner lining is made of super-hard wear-resistant alloy.
  3. Good resistance to heat and corrosion. The matrix of super hard alloy material has strong resistance to heat and corrosion. Under the action of wet state, corrosion medium and particle scour, it is more suitable to use the super hard wear-resistant alloy. Under the condition of dry state in which abrasive wear is the main failure mode, a kind of super hardness wear-resistant alloy material which can be obtained by heat treatment is selected.
  4. The bimetal wear-resistant pipe with low composite cost and good quality is manufactured by the internationally advanced epc casting process with high yield, good compactness, uniform thickness and stable quality.
  5. The bimetal wear-resistant pipe can be connected by flange, quick joint and direct welding.In addition, due to the high resistance and beating performance of the composite pipe, when partial blockage occurs in the pipe system maintenance, it can be knocked or hammered at will, and can be cut, unloaded, welded and installed at will.
SHS process

SHS process

Technology

High chromium cast iron is the third generation of white cast iron developed from ordinary white cast iron and hard nickel cast iron.

Process requirement

  1. Wear-resistant elbow is made of bimetal wear-resistant composite.
  2. The general manufacturing method is made by the combination of the vacuum absorption casting process of the vanishing mould, and the manufacturing process of the commodity shall be indicated in other processes.
  3. Adopt composite alloy steel wear-resistant layer, each elbow shall be eccentric compound, and the outside of the elbow shall be thickened according to the working condition to achieve the life design of the outside and inside. In order to reduce the resistance of coal powder transportation, the elbow should be smooth and excessive, and the shrimp waist welding method should not be adopted, so as to ensure that the inner diameter of the throughflow at all parts is 510mm, and no convex platform can be found.
  4. Wear-resistant lining is made of high chromium alloy (not lower than KMTBCr28), with service life over 2 years and annual wear less than 5mm.The outer wear resistant lining thickness is 28mm, the inner wear resistant lining thickness is 22mm, and the hardness of HRC is greater than 55. Outer pipe of lining part 558*10, connecting pipe 508*10, outer ring 558*22, material is 10 steel. Seamless pipes (or welded pipes) can be used, and their performance should meet the requirements of GB2087, GB8163.

The bimetal wear-resistant tube inner wall KMTBCr28 has stable quality and good comprehensive performance. Adding a certain amount of rare earth elements can improve the alloy quality of steel, refine the grain and form a protective film on the surface.A certain amount of Mo was added to make the alloy have certain antioxidant effect and increase service life at high temperature.A certain amount of boron carbide can be added to control the hardness in the range of HRC45 ~ 65, and solve the contradiction between the hardness and weldability of wear-resistant steel.

Quality requirements

The inner and outer surface of bimetal wear-resistant elbow should be smooth and clean, without burrs, burrs, cracks, loose, pores or bubbles;The inner wall of the wear-resisting elbow should be smooth without accumulated powder.The bend should have good thermal shock resistance. When there is a sharp change in temperature or welding connection, the inner layer of the wear-resistant pipe will not break and spalling due to the expansion or contraction of the inner layer.The dimensional deviation shall meet the requirements of product drawings and order, agreement, and shall meet the provisions of GB3092, GB8162 and GB8163 without special requirements.The thickness deviation of lining is + / – 1.2mm.

Frequently Asked Questions (FAQ) of Bimetal Clad Pipe:

1. What is a bimetal clad pipe?
A bimetal clad pipe is a composite pipe that consists of two different materials metallurgically bonded together. It typically comprises an inner layer made of a corrosion-resistant or wear-resistant material and an outer layer made of a structurally sound material.

2. What are the advantages of using bimetal clad pipes?
Bimetal clad pipes offer several advantages, including:
- Excellent corrosion and wear resistance due to the inner layer's high-quality material.
- Cost-effectiveness by using a corrosion-resistant alloy only where needed, reducing material costs.
- Extended service life in abrasive and corrosive environments, reducing maintenance and replacement expenses.
- Versatility, as different materials can be chosen for the inner and outer layers to meet specific application requirements.

3. What are the typical applications of bimetal clad pipes?
Bimetal clad pipes find applications in various industries, including:
- Oil and gas: for transporting corrosive fluids and gases.
- Petrochemical: for handling abrasive and corrosive materials.
- Mining: for conveying slurries and abrasive minerals.
- Power generation: for transporting coal ash and other abrasive particles.

4. How are bimetal clad pipes manufactured?
Bimetal clad pipes are manufactured using various processes, such as explosive welding, roll bonding, or vacuum diffusion bonding. These methods ensure a strong metallurgical bond between the two layers, creating a durable and reliable composite pipe.

5. Can bimetal clad pipes be customized to specific requirements?
Yes, bimetal clad pipes can be tailor-made to suit specific application needs. The choice of materials, dimensions, and shapes can be adjusted to meet the demands of different industries and operating conditions.

6. Are bimetal clad pipes easy to install and maintain?
Yes, bimetal clad pipes are designed to be easily installed using standard pipe joining techniques like welding, flanges, or mechanical couplings. Once installed, they require minimal maintenance due to their high wear and corrosion resistance properties.

7. How can I determine the suitable bimetal clad pipe for my application?
Selecting the right bimetal clad pipe involves considering factors such as the conveyed material's corrosiveness and abrasiveness, operating temperature, pressure, and pipe dimensions. Consult with experienced suppliers or manufacturers to choose the most appropriate solution for your specific needs.

8. Can bimetal clad pipes be used in high-temperature applications?
Yes, bimetal clad pipes can be designed to withstand high-temperature environments, depending on the materials selected for the inner and outer layers. Specialized materials and manufacturing techniques may be employed to ensure their stability and performance at elevated temperatures.


Features of centrifugal casting for bimetal wear resistant pipe production process

(1) Centrifugal casting technology enables the molten steel to solidify and form under the gravity condition, which is dozens of times higher than conventional casting. It solves the problem of loose inside the casting tube billet, has high metal density, and has good discharge and exhaust effect.

(2)The size accuracy of centrifugal cast pipe is high and the wall thickness is even, which provides a favorable guarantee for the size accuracy of subsequent processed products.

(3)Centrifugal casting process has high flexibility for the production of steel pipes of small batch, multiple varieties and specifications, high quality and high value-added steel.

What is CRA Cladding?

CRA basically means corrosion resistant alloy.
It’s a material that is built for cladding because its main purpose is to enhance a pipe’s resistance to corrosion.

What is Elbow Cladding?

Pipe elbow cladding is the process of applying a cladding material to elbow pipes.
It’s done on a more careful manner than the usual.
This is because elbow pipes can change throughout the entirety of the process.

Where Can Pipe Cladding be Applied to?

Particularly, the process of pipe cladding benefits the oil and gas industry the most.

However, it can also be used by other industries such as:

What is Pipe Lining?

Pipe lining is the process of prolonging the lifespan of pipes.

It can also be used, however, to restore a pipe from natural damages such as:

Lined Pipes vs. Clad Pipes

Pipe lining and pipe cladding are processes that are far from each other.

Lining is the process of mechanically bonding materials to pipes for restoration. Some of the uses of pipe lining include:

Cladding is the procedure of metallurgical bonding of clad materials to pipes. Some of the major uses of pipe cladding include:

Who Can Help You With Pipe Cladding?

There are a lot of companies that utilize state-of-the-art pipe cladding equipment.

We have cutting-edge technology that can complete projects ahead of time.

Some of the most notable features that our pipe cladding equipment have include:

Silicon Carbide

Silicon carbide, mainly consisting of SiC, also known as carborundum, is a hard chemical compound containing silicon and carbon.

Rare Earth Alloy Wear-Resistant Pipe

Rare earth alloy wear-resistant pipe has the characteristics of fast velocity and high flow rate.

Ceramic Sleeve Lined Pipe

The ceramic sleeves lined pipe as a whole part, and then assemble it into the steel pipe with our high-strength-temperature-resistant epoxy adhesive.

Ceramic Tile Lined Pipes

Ceramic tile lined pipe and Bend are cast with mold vanishing vacuum suction casting cladding process.

Cast basalt

Cast basalt is a kind of silicate crystalline material after producing and processing

Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

Bimetal Clad Pipe

Bimetal clad pipe is cast with mold vanishing vacuum suction casting cladding process.

Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures.

UHMWPE Pipes

UHMWPE is well suited for pipe applications that demand high abrasion resistance combined with low friction.

【H】 Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

【H】 Cast basalt lined steel pipe

Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.

【H】 Ceramic Tile Lined Pipes

Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.

【H】 Rare earth alloy wear-resistant pipe

The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.

【H】 Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.

【H】 ASTM A213 T91 Alloy Tube

The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.

Ni-Hard Wearback Pipes Ni-Hard Wearback Pipes
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