What is a Head Oval?
Head Oval is a fitting used to close off the end of a pipe. It is usually made of stainless steel material which is corrosion resistant and high strength. Head Oval is designed to ensure the sealing and safety of the end of the pipeline.
| Product Name | Head Oval |
| Size | 1/2″-48″ seamless,50“-110”welded |
| Standard | ANSI B16.9,MSS SP 43, DIN28011, EN10253-4, GOST17379, JIS B2313, MSS SP 75, etc. |
| Wall thickness | SCH5S, SCH10S, SCH10, SCH40S,STD, XS, XXS, SCH20,SCH30,SCH40, SCH60, SCH80,
SCH160, XXS and etc. |
| Type | Ellipsoidal head,pipe end cap,tank head,pressure vessel head,etc. |
| End | bevel end/BE/buttweld |
| Surface | pickled,sand rolling,brighten,matt polished,mirror polished |
|
Material |
Stainless steel: A403 WP304/304L, A403 WP316/316L, A403 WP321, A403 WP310S,
A403 WP347H, A403 WP316Ti, A403 WP317, 904L, 1.4301,1.4307,1.4401,1.4571,1.4541, 254Mo and etc. |
| Duplex stainless steel: UNS31803, SAF2205, UNS32205, UNS31500, UNS32750 , UNS32760,
1.4462,1.4410,1.4501 and etc. |
|
| Nickel alloy: inconel600, inconel625, inconel690, incoloy800, incoloy 825, incoloy 800H, C22,
C-276, Monel400, Alloy20 etc. |
|
| Application | Petrochemical industry;avation and aerospace industry;pharmaceutical industry;gas exhaust;
power plant;ship buliding;water treatment,etc. |
| Advantages | ready stock,faster delivery time;available in all sizes,customized;high quality |
Implementation standard for Head Ovals
Below are some examples of common Head Ovals that are implemented in various countries:
ANSI/ASME:ANSI/ASME B16.9, ANSI/ASME B16.11, ANSI/ASME B16.28,etc
EN: EN 10253-4, EN 10241, etc
DIN: DIN 2617, DIN 2618, etc
JIS: JIS B2311, JIS B2312, etc
Head Oval Features
1.Corrosion Resistance: Head Ovals are made of stainless steel material, which has good corrosion resistance. It is able to resist a wide range of chemicals, including acids, alkalis and salts, making it exhibit excellent durability in harsh environments.
2.High Strength: Head Ovals is characterised by high strength and stiffness, and can withstand certain pressure and impact. This enables it to achieve reliable end closure in the piping system, ensuring the safe operation of the pipeline.
3.Good sealing: Head Oval which is tightly combined with the end of the pipe to ensure the effective sealing of the pipe. The device can effectively prevent liquid leakage, gas diffusion, impurities and other damage to the pipeline, thus ensuring the integrity and reliable operation of the pipeline.
4.Easy to install and maintain: the installation and removal of the Head Oval is relatively simple and can be carried out quickly. This provides convenience for maintenance and repair of the piping system, reduces downtime, and lowers labour costs for workers.
5.Diverse sizes and shapes: Head Ovals are available in a variety of sizes and shapes to meet the needs of various piping systems. We can provide different pipe diameters, wall thicknesses and fittings according to your needs.
Overall, Head Ovals offer corrosion resistance, high strength, good sealing, ease of installation and maintenance, making them ideal for a wide range of industrial applications.
What are the uses of Head Ovals?
1.Sealing the end of the pipeline: The end of the pipe system is sealed with Head Ovals to prevent leakage of liquid or gas. It is widely applied in oil, chemical, food processing and so on pipeline system.
2.Pipeline termination and blocking: In the case of temporary or permanent cessation of the pipeline system, Head Ovals may be used to seal the pipe to prevent foreign matter from entering and stopping the flow of liquid.
3.Pipeline Repair and Maintenance: In the course of repairing, repairing or cleaning of pipes, it is possible to seal off one end of the pipe with stainless steel tube cover, so as to guarantee the safety of the working area and the integrity of the pipe.
4.Pipeline testing and commissioning: In the course of building or expanding the pipeline system, it is possible to use Head Ovals during the testing and commissioning phase to make sure that the necessary checks and adjustments are carried out before the pipeline is normally operated.
5.Pressure vessels and tanks: Head Ovals are widely used in the production of pressure vessels and tanks to close the inlet and outlet holes of the container, to keep the container sealed and secure.
6.Heat exchangers and equipment connections: In heat exchangers and other facilities, the use of stainless steel caps to connect the pipes to the equipment, providing a safe closure and connection.
Generally speaking, Head Ovals play a vital role in installing, maintaining, testing and terminating piping systems to make sure that pipe systems operate safely, stably and reliably.
What are the types of Head Ovals?
There are various types of Head Ovals, and the common types include the following:
1.Welded Head Ovals: This type of Head Oval is connected to the end of the pipe by welding method. It can be a welded joint or seamless joint with good sealing and structural strength.
2.Threaded Head Ovals: These Head Ovals have internal or external threads and can be threaded to connect to the pipe threads. They can be tooled or hand screwed to provide a removable closure solution.
3.Forged Head Ovals: These Head Ovals are made through a forging process and offer high strength and pressure resistance. It is typically used in high pressure and high temperature applications such as the petroleum, chemical and power industries.
4.Pressure-locking Head Ovals: This type of Head Oval uses a pressure-locking mechanism to secure the tube by applying pressure on it. It offers quick, secure, and reliable closure solutions for applications that need to be opened and closed frequently.
Manufacturing process of Head Oval
The manufacturing process of Head Ovals includes: material preparation、forming process、surface treatment、inspection and quality control、marking and packaging.
The difference between Head Ovals and Carbon Steel Head Oval
1.Material: Head Ovals are made of stainless steel materials, such as 304, 316L, and have excellent corrosion-resistant properties.On the other hand, carbon Head Ovals are made of carbon steel, for example, ASTM A234 WPB and the like, and are of high strength.
2.Corrosion resistance: Head Oval has good corrosion resistance, can resist acid, alkali, salt and so on. It is applicable in damp, corrosive environment.Carbon Head Oval is less resistant to corrosion and oxidation in corrosive media.
3.Strength and hardness: Carbon Head Oval is strong and hard, suitable for the application of high-pressure and high-temperature applications.On the other hand, Head Ovals are more flexible and have lower strength and hardness, so they can be used in general industry.
4.Price: Generally speaking, the cost of Carbon Head Oval is lower than that of Head Oval, and the cost of carbon steel is relatively low.
5.Application: Head Oval cover is widely applied in the fields of chemical, oil, food processing and so on. Carbon Head Ovals are widely used in general industry settings, for example, petrochemical, ship building, energy etc.
Generally speaking, Head Ovals have superior corrosion resistance and are suited to corrosion resistant environments, whereas Carbon Head Ovals have high strength and are suitable for common industry applications. In choosing, it is necessary to choose the appropriate choice according to the specific application environment, media demand and budget.
Precautions for the use of Head Ovals
1.Material selection: Make sure you choose the right type of stainless steel, such as 304, 316L, and so on, to meet the requirements of corrosion resistance and environment.
2.Size and specification: According to the diameter, wall thickness and connecting method of the tube, choose the right size and the size of the tube to make sure it is compatible with the tube.
3.Installation method: According to the type and connecting method of Head Oval, the proper installation method should be chosen, for example, welding, screw connection, etc. Follow the proper installation procedures and specifications to ensure the quality of the installation and sealing.
4.Sealing check:After installation of Head Oval cover, make sure the end of tube is well sealed. This may be checked by means of pressure tests or other suitable methods.
5.Temperature and Pressure Limitations: Be aware of the temperature and pressure limits of Head Ovals and make sure they are in proper range to avoid material failure or leakage.
6.Note on corrosive media: Although stainless steel has a good corrosion-resistant property, it can be influenced by some strong acids, alkalis or salts.In handling corrosive media, careful consideration should be given to their impact on stainless steel, and proper protection measures are adopted.
7.Regular inspection and maintenance: Periodically inspect the state of Head Ovals to make sure that they are sealed and complete. In case of damage, corrosion or leakage, it is necessary to take timely repair or replacement measures.
Please note that these are general precautions and that specific use and installation instructions should be carried out in accordance with specific product and application requirements and in accordance with relevant manufacturer’s recommendations and industry standards.
