Hebei Chiken Pipeline Equipment Co., Ltd.-Neck welding flange-Neck welding flange is a flange commonly used in high-pressure pipeline systems. It has strong pressure resistance and good sealing. The flange is welded to the pipeline through the flange neck and can effectively withstand the high pressure and high temperature in the pipeline. Neck welding flange is widely used in petroleum, chemical, metallurgy, electric power and other industries, and is suitable for pipeline systems that need to withstand high working pressure and temperature.-Neck flat welding flange-The flat welding flange with neck is a high-strength, high-tightness and widely used pipeline connection flange. The flange is connected to the pipeline by welding through the neck of the flange. It is suitable for high-pressure and high-temperature working environments, especially widely used in pipeline systems with high pressure and sealing requirements. The design of the flat welding flange with neck is connected to the pipeline through the neck of the flange, providing a more solid connection and higher pressure resistance.-Threaded flange-Threaded flange is a pipe flange connected by threads. It is widely used in industries such as petroleum, chemical, electric power, and shipbuilding to connect pipelines or equipment. The main feature of threaded flange is that it does not require welding and is directly connected to the pipeline through threads, which is easy to disassemble and install. This flange is widely used in low-pressure systems and pipeline connections, especially in places where welding is not suitable.-Blind Plate-A blind flange is a flange without holes, usually used to close ports or openings in a piping system. It is used to prevent leakage of fluids or gases during pipeline installation, overhaul, shutdown maintenance or testing of pipeline systems. Blind flanges are generally bolted to flange joints to tightly close the openings of pipelines or equipment. Blind flanges are critical sealing components in pipeline systems and are widely used in industries such as petroleum, natural gas, chemicals, and electric power.-Loose flange-Loose flange is a pipe connection flange that does not require welding and is mainly connected to the pipe by bolts and gaskets. Unlike traditional welded flanges, the design of loose flanges allows a certain amount of loose space between the flange and the pipe, so that the flange can be easily disassembled and replaced. It is widely used in pipeline systems that need to be regularly disassembled, inspected or repaired, especially for medium and low pressure pipelines and working conditions. The advantages of loose flanges are the ease of installation and disassembly, reduced maintenance costs and flexibility. They are widely used in many industrial fields, such as chemical, electric power, oil and gas, water supply and drainage and other pipeline connection systems.-Eight-hole blind flange -The figure-eight blind plate (Eight-hole blind flange) is a closed connection device used in pipeline systems. It closes the opening in the pipeline system by connecting it to the flange of the pipeline, and is usually used for temporary blocking during pipeline installation, maintenance or system debugging. The figure-eight blind plate is a temporary sealing tool for the disconnected part of the pipeline, suitable for pipeline systems that need to be repaired or modified. The "figure-eight" of the figure-eight blind plate refers to the fact that there are multiple holes on the blind plate, which is usually to meet special installation requirements or to increase the connection strength through multiple bolt holes to ensure safe use in high-pressure and high-temperature environments. It is widely used in the petroleum, chemical, electric power, pharmaceutical and other industries, and is a highly reliable pipeline accessory.-Plate type flat welding flange-Plate-type flat-weld flange is a common pipe connection flange with the characteristics of simple structure, low cost and convenient installation. It is suitable for pipeline systems with low to medium pressure and is widely used in industries such as petroleum, natural gas, chemical industry, and electric power. Plate-type flat-weld flange is connected to the pipeline by welding, without the need for additional threads or holes, ensuring the sealing and stability of the connection.-Socket flange-Socket welding flange is a flange used in high pressure systems, usually used to connect small diameter pipes. It is sealed and connected by inserting the pipe into the inner hole of the flange and welding it on the flange. Socket welding flange has good strength and sealing performance, and is widely used in pipeline connections under high pressure, low temperature and high temperature conditions in petroleum, chemical, electric power, steel and other industries.-180° Elbow-180° elbow is a kind of elbow fitting commonly used in pipeline systems. It is usually used to change the direction of the pipeline and realize the reverse flow of pipeline fluid or gas. Its function is to change the flow direction of fluid or gas by 180 degrees. It is usually used to avoid fluid resistance caused by right-angle turns or when the direction needs to be adjusted during pipeline installation. 180° elbow is widely used in various pipeline systems, especially in the petroleum, chemical, electric power, construction, municipal and other industries to ensure the smooth operation and long-term stability of the pipeline.-Pipe cap-Pipe caps (also called pipe caps or pipe plugging caps) are a type of sealing device in a pipeline system, mainly used for closing the end of a pipeline or temporarily plugging it. It can effectively seal the pipeline opening, prevent external pollutants from entering the interior of the pipeline, and prevent leakage of media in the pipeline. Pipe caps are widely used in industries such as petroleum, natural gas, chemicals, electric power, and metallurgy, and are often used in pipeline construction, maintenance, pressure testing, storage, and transportation. Pipe caps are usually designed to be closed and can be installed by welding, flange connection, threaded connection, etc. to ensure the tightness of the pipeline system after closure. The shape of the pipe cap can be round, spherical, elliptical, etc. The specific shape and size are customized according to the pipeline specifications and usage requirements.-Eccentric reducer-Eccentric reducers (also known as eccentric pipe fittings) refer to pipe fittings with one end larger than the other. They have a circular nozzle connected to the pipe and achieve reasonable fluid transportation through the size transition of the pipe. Unlike concentric reducers with the same function, the special feature of eccentric reducers is that their center lines are different. Usually one side is thicker and the other side is thinner, and the shape is asymmetrical. Eccentric reducers are usually used to change the flow direction of fluid or adjust the flow rate of pipelines. They are widely used in the fields of petroleum, chemical industry, electric power, metallurgy, shipbuilding, etc., especially for those situations where pipelines of different sizes need to be connected.-Concentric reducer-Concentric reducers (also called concentric pipe fittings or concentric pipe transition joints) are a type of connection fittings commonly used in pipeline systems. They are mainly used to connect pipes of different diameters and have the function of transitioning fluids from one pipe to another. Unlike eccentric reducers, the centers of the two pipe ports of concentric reducers are located on the same straight line, so "concentric" means that its inner and outer walls and axis are collinear. It is usually used in various pipeline connections and can smoothly change the diameter of the pipeline to ensure stable delivery of the fluid. Concentric reducers are widely used in the fields of petroleum, chemical industry, electric power, metallurgy, water supply and drainage, shipbuilding, etc., especially in places where pipeline size transition is required, such as the connection of fluid pipelines and gas pipelines.-Tee-Tee is a commonly used pipe fitting, used for flow diversion, convergence or direction change in the pipe system. The function of the tee is to connect three pipes, which can be a straight connection or a branch connection, so as to achieve the distribution and convergence of fluids in the pipe. According to the different needs of the pipe, there are different types of tees, such as equal diameter tees (T-type) and reducing tees (reducing tees). It is widely used in industries such as petroleum, chemical, electric power, construction, water treatment, etc.-Four-way-A cross is a pipe fitting used to connect four pipes. It can achieve multi-directional flow diversion or convergence of fluids in a pipe system. A cross is similar to a tee, but it has one more connection port, so it can be used in more complex pipe systems and meet more diverse application requirements. A cross is widely used in industries such as petroleum, chemical, electric power, metallurgy, pharmaceuticals, water supply and drainage, especially in situations where four pipes need to branch or converge.-Pipe bending-The elbow (also called elbow pipe) is a key fitting used to change the direction of fluid flow in a piping system. It can turn the pipe from one direction to another and is often used to connect different parts of a piping system or change the direction of the pipe layout. The main function of the elbow is to achieve the turning of the pipe, avoid the waste of space in the straight pipe layout, and ensure the smooth flow of the fluid in the pipe. The elbow is generally classified according to parameters such as the bending angle, radius, material and caliber. Common elbow angles include 45°, 90°, 180°, etc. Pipe elbows are widely used in various types of pipeline systems such as petroleum, chemical, electric power, construction, water supply, and drainage.-Oblique Tee-An oblique tee is a distribution and convergence device used in pipeline systems, featuring three ports: one main channel and two side channels. Its unique design causes the flow direction to deviate, reducing friction resistance and improving fluid flow efficiency. Typically used when the flow direction needs to change or fluid distribution needs adjustment, the oblique tee has an angle of 45° or 60° between the branch and main pipe, minimizing vortex formation and enhancing system performance. It is widely used in industries such as petroleum, chemical, power, metallurgy, and water supply, especially under conditions of high flow, pressure, and temperature.-Reducing elbow-Reducing elbow (also known as unequal diameter elbow) is a pipe fitting used to connect pipes of different diameters in a pipeline system. It has the function of changing the direction and size of the pipe. Unlike the standard equal diameter elbow, the pipe diameters of one end of the reducing elbow are different from those of the other end. It is commonly used in situations where pipes of different sizes need to be bent and connected. Its design helps to improve the fluid conveying efficiency, reduce the fluid resistance, and optimize the spatial layout of the pipeline. Reducing elbows are widely used in industries such as petroleum, chemical, electric power, metallurgy, water supply, and water supply and drainage.-45° Elbow-The 45° elbow is a commonly used fitting in the piping system, mainly used to change the direction of the pipe. Its bending angle is 45 degrees, and it is usually used in situations where a relatively gentle turn is required. By connecting with the pipe, the 45° elbow can achieve smooth flow of the fluid and reduce friction and pressure loss of the flow. Due to its relatively gentle design, the 45° elbow is usually suitable for most fluid piping systems and is widely used in the fields of petroleum, chemical industry, electricity, construction, water supply and drainage, etc.-90° Elbow-The 90° elbow is one of the commonly used accessories in the pipeline system, mainly used to change the direction of the pipeline. Its bending angle is 90 degrees, usually used for sharp turns of the pipeline or occasions where a large angle of turn is required. The 90° elbow can help the pipeline system to smoothly complete the direction adjustment, especially in the case of limited space or complex pipeline layout, it can effectively optimize the pipeline direction. It is widely used in the petroleum, chemical, electric power, construction, water supply and drainage and other industries, suitable for various fluid media, pressure and temperature conditions.-Reducing Tee-A reducing tee is a pipe fitting used to connect two pipes of different diameters, enabling fluid distribution or convergence. It can divert fluid from a large pipe to a smaller one, or vice versa, and is commonly used when pipe diameters need to be changed. Highly versatile, it is widely used in industries like petroleum, chemical, power, construction, and metallurgy. Unlike standard tees, the reducing tee has branches with different diameters, allowing for flexible fluid distribution. It typically comes in two types: concentric and eccentric reducing tees, differentiated by whether the branch pipe axes are in the same plane.-Steel pipe-Steel pipe is a pipe product made of steel and is widely used in various industrial and civil pipe systems. It is usually used to transport liquids, gases, solids and other media, and has high mechanical strength, good corrosion resistance and durability. There are many types of steel pipes, including seamless steel pipes, welded steel pipes, galvanized steel pipes, stainless steel pipes, etc., which are suitable for industries such as petroleum, chemical industry, construction, refrigeration, and electricity, and are indispensable infrastructure in modern pipe systems.-Bellows-A bellows is a corrugated pipe, typically made from metal or non-metallic materials, known for its elasticity and compressibility. It is widely used in pipeline systems as a compensator, sealing device, and key component in pressurized pipelines. Thanks to its excellent shock resistance, high temperature tolerance, and corrosion resistance, bellows are essential in various industries. Commonly made from stainless steel, alloy steel, or copper, they offer strong pressure and wear resistance. Bellows can absorb pipeline deformation caused by temperature changes, pressure, and vibration, making them indispensable in industries such as petrochemical, power, metallurgy, machinery, construction, and shipbuilding.-Manhole-Manholes are openings used for inspection, maintenance and cleaning of closed containers such as pipelines, equipment, storage tanks, sewage tanks, etc., usually equipped with a cover that can be opened and closed. Manholes are not only convenient for personnel to enter for daily inspection and maintenance, but also provide emergency repair channels. Manholes are widely used in industrial piping systems, sewage treatment plants, chemical plants, power facilities, oil and gas storage and transportation, and other fields. Manholes have strong sealing properties, which can prevent external contaminants from entering and ensure that the medium in the pipeline or container will not leak. They can maintain good sealing performance in various working environments and provide safe and reliable personnel access.-Rubber soft connection-Rubber expansion joint, also known as rubber expansion joint or rubber hose joint, is a flexible connection element used in pipeline systems. It is mainly used to absorb thermal expansion, vibration, offset and other mechanical stresses in pipelines. Through the composite structure of rubber and metal reinforcement layer, it can effectively relieve the stress caused by temperature changes, pressure fluctuations, improper installation and other reasons in pipelines, and avoid damage to pipeline systems. Rubber expansion joints are widely used in pipeline systems in industries such as petroleum, chemical, electric power, metallurgy, construction, and municipal administration.-Rotary compensator-A rotary compensator, also known as a rotary expansion joint, is a device used in piping systems to absorb thermal expansion, displacement or vibration of pipes. It compensates for axial displacement caused by temperature changes, pressure fluctuations or pipe deformation by allowing the pipe or equipment to rotate. Rotary compensators are usually installed at the corners of the pipe or the part that needs to rotate. They can effectively reduce the mechanical stress of the pipe and equipment and prevent pipe rupture, leakage or other failures caused by excessive stress. The device is widely used in pipeline systems in the petroleum, chemical, electric power, steel, metallurgy and other industries.-Support bracket-Supports and hangers are important components used to support, fix and adjust pipelines, equipment and other mechanical facilities. They are usually installed at different locations in the pipeline system to ensure that the pipeline maintains a stable structure and position during operation. Supports and hangers ensure the safety, stability and long-term operation of the pipeline system by bearing the weight, thermal expansion, vibration and other forces of the pipeline. It is widely used in industries such as petroleum, natural gas, chemicals, electricity, metallurgy, and construction, and is an indispensable and important component in the pipeline system. Supports and hangers are usually made of materials such as steel and aluminum alloy, and can be customized according to actual needs. Depending on the working conditions and installation environment of the pipeline, the design of supports and hangers can have different types, specifications and load-bearing capacities.-Compensator-A compensator is a device used to absorb the deformation or displacement of pipelines, equipment, mechanical structures, etc. caused by temperature changes, pressure changes, vibration, settlement, etc. It is widely used in pipeline systems, thermal engineering, water supply and gas supply systems, petrochemicals, power equipment and other fields to reduce the stress on pipelines, pipe fittings and equipment and avoid damage or safety hazards caused by deformation. The compensator can effectively ensure the stable operation of the pipeline and extend the service life of equipment and pipelines. Compensators are usually divided into different types according to different working conditions and application requirements, such as metal bellows compensators, expansion joints, rubber compensators, etc.-Metal hose-Metal hose is a pipe component with good flexibility, high temperature resistance, pressure resistance, corrosion resistance and other characteristics, usually made of metal materials such as stainless steel or alloy steel. It consists of multi-layer metal bellows, braided mesh and sealing rings, and is widely used in pipeline systems for connection, compensation, sealing, shock absorption and protection. Metal hose can play an important role in various complex working conditions (such as high temperature, high pressure, vibration, corrosion and other environments) to ensure the normal operation of the pipeline system. The core function of metal hose is bending and scalability, which is suitable for displacement and vibration absorption of pipelines. It is widely used in many industries such as petrochemical, steel metallurgy, electric power, mechanical equipment, aerospace, and automobiles.

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Neck flat welding flange

The flat welding flange with neck is a high-strength, high-tightness and widely used pipeline connection flange. The flange is connected to the pipeline by welding through the neck of the flange. It is suitable for high-pressure and high-temperature working environments, especially widely used in pipeline systems with high pressure and sealing requirements. The design of the flat welding flange with neck is connected to the pipeline through the neck of the flange, providing a more solid connection and higher pressure resistance.

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+86 15733710333

info@global-flange.com

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+86 15733710333

Material	Carbon steel, stainless steel, alloy steel, cast steel, etc.
Specification	DN15 ~ DN1200（1/2" ~ 48"）
Pressure level	PN6 ~ PN250
standard	Comply with international standards such as GB, ANSI, DIN, JIS, etc.
Surface treatment	Spraying, galvanizing, phosphating, etc.
Connection	Neck welding
Temperature range	-50°C ~ 450°C
Pipe wall thickness	Applicable to Schedule 40/80 pipe wall thickness, special requirements can be customized