Butt Weld Fittings

Why Choose Us

Factory Strength

Shanghai KEK Pipeline Technology Co., Ltd. is a reputable AAA listed pipe fittings manufacturer in China, covering an area of 66666㎡ (80000+㎡ in Phase II), with more than 30 technicians and engineers.

Our Certifications

KEK has obtained ISO9001, ISO14001, ISO18001, CE/PED, API certification and TS pressure pipe component special equipment manufacturing license, as well as Russia's EAC continuous certification.

Advanced Equipment

It has a full set of the largest and most advanced equipment in China, including a 4000-ton hydraulic press and a 3000-ton three-way cold extrusion molding machine.

Product Traceability

Product traceability, all products are numbered and indexed by furnace number, production process number, and RT inspection number to ensure the unique traceability of the product.

What is Butt Weld Fittings

Buttweld pipe fittings comprises of long radius elbow, concentric reducer, eccentric reducers and Tees etc. Butt weld stainless steel and carbon steel fittings are an important part of industrial piping system to change direction, branch off or to mechanically join equipment to the system. Buttweld fittings are sold in nominal pipe sizes with specified pipe schedule. BW fitting's dimensions and tolerances are defined as per ASME standard B16.9.

3 Inch 90 Degree Elbow Carbon Steel
Product Name: 3 inch 90 degree elbow carbon steel
Dimension and Wall Thickness：
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according...
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90 Degree Carbon Steel Pipe Elbow
Product Name: 90 degree carbon steel pipe elbow
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Alloy Steel 45 Degree Elbow
Product Name:Alloy steel 45 degree elbow
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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A234 Wp11 Elbow
Product Name: a234 wp11 elbow
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to customer’s...
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Carbon Steel 90 Degree Elbow
Product Name: carbon steel 90 degree elbow
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Carbon Steel Concentric Reducer
Product Name: carbon steel concentric reducer
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Stainless Steel Concentric Reducer
Product Name: Stainless steel concentric reducer
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according...
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Alloy Steel Concentric Reducer
Product Name: Alloy steel concentric reducer
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Carbon Steel Eccentric Reducer
Product Name: carbon steel eccentric reducer
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Alloy Steel Eccentric Reducer
Product Name: Alloy steel eccentric reducer
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Stainless Steel Eccentric Reducer
Product Name:Stainless steel eccentric reducer
Dimension and Wall Thickness
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Carbon Steel Equal Tee
Product Name: carbon steel Equal tee
Dimension and Wall Thickness：
Seamless: 1/2”~24” (DN15~DN600) SCH5~SCH XXS
End connection：PE or BE
Marking： according to...
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Benefits of Butt Weld Fittings

Exceptional Durability and Strength

Butt weld fittings are built to last. Crafted from high-quality materials, they exhibit exceptional durability, standing up to even the most challenging environments, extreme temperatures, and corrosive substances. This robust construction ensures a prolonged service life, reducing the need for frequent replacements and minimizing downtime.

Minimal Maintenance Requirements

In industries where time is money, maintenance-related downtime can be a significant concern. Butt weld fittings address this issue by virtue of their welded joints. These joints eliminate the need for frequent maintenance, leading to reduced operational disruptions and long-term cost savings. This advantage is a testament to the overall cost-effectiveness of piping systems that incorporate butt-weld fittings.

Aesthetically Pleasing and Clean Design

In industries where aesthetics matter, such as the food and beverage sector or architectural applications, butt weld fittings make a difference. Their seamless construction not only ensures functional integrity but also contributes to a clean and visually pleasing appearance. These fittings show that utilitarian components can seamlessly merge with aesthetics, enhancing the overall visual appeal of the system.

Corrosion Resistance

Corrosion can wreak havoc on piping systems, compromising their structural integrity and efficiency. Butt weld fittings, with their high-quality materials and seamless construction, offer exceptional resistance to corrosion. This resistance ensures that the fittings can withstand exposure to various corrosive substances and environments, extending their lifespan and maintaining the system's reliability.

Types of Butt Weld Fittings

Buttweld Short Radius Elbow (45°, 90°, 180°)
These fittings are used to change the direction of flow in a piping system. They come in different angles to allow for smooth turns.

Buttweld Long Radius Elbow (45°, 90°, 180°)
Similar to short radius elbows, these fittings also change the direction of flow, but they have a longer radius, which results in a smoother flow transition.

Reducing Elbow
This type of elbow is used when there's a need to change the pipe diameter as well as the direction of flow.

Straight Cross
A straight cross fitting is used to connect four pipes of equal diameter at right angles to each other.

Reducing Cross
Similar to the straight cross, this fitting connects four pipes, but the diameters of the connected pipes are different.

Straight Tee
A tee fitting is used to create a T-shaped junction in a piping system, allowing the flow to be split in two directions.

Reducing Tee
Like the straight tee, a reducing tee also creates a T-shaped junction, but with pipes of different diameters.

Concentric Reducer
This fitting is used to connect two pipes of different diameters in such a way that the center lines of the pipes remain aligned. This results in a gradual reduction in pipe diameter.

Eccentric Reducer
Similar to the concentric reducer, an eccentric reducer also connects two pipes of different diameters, but the center lines of the pipes are offset. This fitting is used when a gradual reduction in pipe diameter is needed while avoiding potential buildup.

Application of Butt Weld Fittings

Oil and Gas Industry

Butt-welding fittings are extensively used in the oil and gas industry for the transportation of oil, gas, and other hydrocarbons. They are employed in pipelines, refineries, offshore platforms, and petrochemical plants. Butt-welding fittings ensure reliable connections in high-pressure and high-temperature environments.

Chemical Processing

Butt-welding fittings find application in chemical processing plants where corrosive fluids and chemicals are handled. These fittings are used to connect pipes and equipment in the production, storage, and transportation of various chemicals, acids, and solvents.

Power Generation

Butt-welding fittings are essential in power plants, including thermal power plants and nuclear power plants. They are used in steam and water piping systems, connecting pipes, valves, boilers, turbines, and condensers. Butt-welding fittings provide secure and durable connections that can withstand the high-pressure and high-temperature conditions prevalent in power generation facilities.

Water and Wastewater Treatment

Butt-welding fittings are employed in water treatment plants, sewage treatment plants, and desalination plants. They are used to connect pipes in the distribution and collection systems, ensuring leak-proof and reliable connections for the transport of water, wastewater, and treatment chemicals.

HVAC Systems

Butt-welding fittings find application in heating, ventilation, and air conditioning (HVAC) systems. They are used to connect pipes, ductwork, and equipment such as chillers, boilers, and air handling units. Butt-welding fittings provide a robust connection that can withstand the pressure and temperature differentials in HVAC systems.

Pharmaceutical and Biotechnology Industry

Butt-welding fittings are utilized in the pharmaceutical and biotechnology industry for the production and transport of sterile fluids and gases. These fittings are crucial in maintaining the integrity and cleanliness of the process, ensuring that no contaminants are introduced during the connection.

Ways to Identify Quality Butt Weld Fittings Fitting

It is necessary to check the dimensions of the fittings, diameters and particularly the specifications, and the ends of the butt welding fittings should always match the ends of the pipes. It means that the diameters should be the same and they will not hermetically bind if not and can cause leaks. In standard steel pipe fittings, there is a high dimension tolerance required in conjunction with the quality inspection of fittings. Therefore, to ensure that they are inspected, you pick butt weld fittings.

Well, in addition to the size inspection, if we speak about the consistency of these fittings, it is very important to have a surface inspection. The surface quality is typically visually tested in order to ensure that the fittings are or are not hard and solid. You can easily find data such as manufacturing time with fittings surface, it is a fresh stock or old stock. You can also see the consistency of the raw material, whether the material is smooth or not.

For quality control, MTC information is also considered essential. You can easily find quality data and information on fittings from the MTC, as well as test conformance. Now, you can easily determine whether or not the fittings are acceptable for your project.

These are the most significant but interesting points to remember when purchasing the best butt weld fittings. On the offline and online market, you can get a wide range of butt weld fittings, but it is critical for you to choose the one that is completely inspected and checked and that offers better features and properties. Make sure you verify that both national and international requirements and specifications are created for the fittings. Therefore, for your piping system and other ventures, these tips will easily help you find the correct butt weld pipe fittings.

How to Choose Butt Weld Fittings

01.

Material Selection

The choice of material for buttweld fittings is crucial, as it directly impacts the performance and longevity of your piping system. Consider factors such as corrosion resistance, temperature tolerance, and mechanical properties when selecting materials like stainless steel, carbon steel, alloy steel, and more.

02.

Size and Dimension

Proper sizing and dimensioning of buttweld fittings are essential to ensure compatibility and efficiency in your piping system. Consider factors such as pipe size, wall thickness, and fitting dimensions to achieve optimal performance and flow characteristics.

03.

Industry Standards

Familiarize yourself with industry standards and specifications relevant to buttweld fittings, such as ASME B16.9 for dimensions, ASME B16.25 for end preparations, and ASTM materials standards. Adhering to these standards ensures compliance and reliability in your piping system.

04.

Application Requirements

Evaluate the specific requirements and conditions of your application when choosing buttweld fittings. Consider factors such as fluid type, pressure rating, temperature range, and environmental factors to select fittings that meet the unique demands of your project.

Process of Butt Weld Fittings

Material Selection
The first step is to select the appropriate material for the butt-welding fittings based on the application requirements. Common materials used include carbon steel, stainless steel, and alloy steel.

Cutting and Beveling
The pipes used for the fittings are cut to the required length, and the ends are beveled to create a V-shaped groove. The bevel angle and shape depend on the fitting type and pipe diameter.

Fit-up and Alignment
The beveled ends of the pipes are aligned to ensure proper fit-up. This involves accurately positioning the pipes to achieve the desired alignment and gap between the beveled ends.

Tack Welding
Once the pipes are aligned, tack welds are applied to temporarily hold them in place. Tack welding is done at specific points along the joint to maintain alignment during the subsequent welding process.

Welding
The actual welding process takes place after tack welding. It is typically performed using the gas tungsten arc welding (GTAW) or gas metal arc welding (GMAW) process. The choice of welding method depends on factors such as material type, thickness, and application requirements.

Post-Weld Treatment
After welding, the fittings may undergo various post-weld treatments to ensure the desired properties and quality. These treatments can include heat treatment, such as stress relieving or annealing, to reduce residual stresses and improve the mechanical properties of the weld.

Inspection and Testing
The butt-welding fittings undergo rigorous inspection and testing to verify their quality and compliance with applicable standards. Common tests include visual inspection, dimensional checks, radiographic testing, ultrasonic testing, dye penetrant testing, and pressure testing.

Surface Treatment
Once the fittings pass inspection, they may undergo surface treatment processes such as shot blasting, pickling, passivation, or coating to enhance corrosion resistance and improve aesthetics.

How to Maintain Butt Weld Fittings

Inspections are scheduled on a regular basis
It's uncommon to be notified of a sudden breakdown or a butt weld fitting. In fact, if you find yourself coping with such a breakdown, you'll almost certainly be in the middle of an emergency crisis.In fact, sticking to a regular inspection plan can have a number of side effects that can help to improve the general health of your workplace. In this light, you can see why being ahead of the road is so important.

Installation of the Right Equipment
If you choose the correct equipment for the job, pipe and butt weld fittings would be extremely durable and sturdy. Despite the importance of inspections, experienced manufacturers often produce trustworthy items that should withstand precise use in most conditions.However, if you use the incorrect equipment for the job, you shouldn't be surprised if your results fall short of your expectations.

Cleanliness and lubrication are essential
Anyone who has worked in an industrial setting for an extended period of time knows how difficult it is to keep people and tool clean.In fact, preventative measures that could assist maintain a workspace more organized are frequently overlooked due to the erroneous perception that there isn't much that can be done for keeping things orderly.

Using the Right Equipment
Operator error is often the biggest threat to the fitting stability or other piece of equipment in a setup.With deadlines looming, you may be tempted to push capacity or expose yourself to the possibility of not following all of your manufacturer's recommendations. Always double-check that your equipment is only operating at full capacity.Any increased output should be monitored to ensure that you are not putting your company at risk.

Equipment Rotation on a Regular Basis
Finally, the fitting lifespan must be taken into consideration. Regardless of your efforts, all your industrial elements will eventually be driven to the limits of their effectiveness.Your pipe fittings and butt welds aren't any different. As a result, it's critical that you keep track of the components' usage and follow the manufacturer's recommendations for cycling in new equipment.

Our Factory

Shanghai KAIKE Pipe Technology Co., Ltd. is a reputable AAA listed pipe fittings manufacturer in China,covering an area of 66666㎡ (80000+ ㎡in stage II) and with technician and engineers more than 30 personal. Kaike Group is made up of Shanghai Kaike Piping Technology, Shanghai Kaike Valve manufacture and one export company Shanghai Chainmill Industry, they are all based in Shanghai, which the economic center of China. KAIKE has reached up to an annual output of pipe fittings of 20,000 tons.KAIKE has the ability to produce by various materials like carbon (low temperature) steel, stainless steel, duplex steel, alloy steel, nickel base alloy and special materials as requested according to GB, SH, Hg, JB, SY, ASME/ANSI, MSS, JIS, DIN, BS,GOST etc.Its main products include BW pipe fittings(SMLS or welded), steel flange, forged pipe fittings as well as prefabricated spools and manifolds,and also can produce according to customers' drawings and requirements.

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FAQ

Q: What are some common types of butt weld pipe fittings?

A: There are various types of butt weld fittings available to suit different requirements. Some of the commonly used fittings include elbows, tees, reducers, caps, stub ends, and crosses. Elbows are used to change the direction of the pipe, while tees are used to create a branch in the piping system. Reducers are used to connect pipes of different diameters, and caps are used to seal the end of a pipe. Stub ends are similar to lap joints and are used to connect pipes with flanges. Crosses are used when multiple branches need to be created.

Q: Why choose butt weld pipe fittings?

A: Butt weld pipe fittings offer several advantages, making them a preferred choice in piping systems. Firstly, the welded connection provides a solid joint, ensuring no leakage. Secondly, butt weld fittings have excellent resistance to corrosion, making them suitable for use in aggressive and corrosive environments. These fittings also have a smooth internal surface, reducing the friction and allowing for a better flow of fluids or gases. Moreover, the strength and reliability of butt weld fittings make them ideal for high-pressure applications.

Q: Where can I buy butt weld pipe fittings?

A: To ensure the longevity and efficiency of your piping system, it is crucial to source quality butt weld pipe fittings from a reliable supplier. There are numerous suppliers available, both online and offline. However, when selecting a supplier, it is essential to consider factors such as product quality, certifications, and customer reviews. Look for suppliers that have a proven track record and offer a wide range of fittings to cater to diverse needs. Additionally, ensure that the supplier provides excellent customer service and is responsive to any queries or concerns you may have.

Q: What are butt weld pipe fittings?

A: Butt weld pipe fittings are specifically designed to be welded at its ends to connect pipes of various sizes or change the direction of flow. These fittings are made of materials such as carbon steel, stainless steel, or alloy steel and are capable of withstanding high pressure and temperature. Butt weld fittings are known for their exceptional strength and durability.

Q: What is the gap for welding pipe fittings?

A: The gap may be as tight as 1/16 in. or up to 5/32 in. SMAW typically requires a tighter gap, while GMAW is more forgiving and allows a larger gap. The root gap should be large enough to allow the molten weld pool to fill it, but small enough so that the weld puddle doesn't fall through.

Q: What is the standard length of a 90 degree elbow?

A: The size range for seamless 90 Deg Short Radius Elbow ranges between ½ inch to 10 inches, while the Welded 90 Deg Street Elbow falls in the range starting from ½ inch to 48 inches.

Q: What is a 90 degree pipe elbow?

A: 90° elbows are used to connect two pipes that are at a right angle to one another. On a level installation, they serve as corner or railing ends. In other words, A 90-degree elbow is easily connected to pipes made of so many different materials, including rubber, steel, cast iron, copper, and plastic.

Q: What is the difference between a 45 degree elbow and a 90 degree elbow?

A: Since a 45-degree elbow has greater impact resistance, it might be more suitable for heavier materials like coal or mining products. On the other hand, the abrasion-resistant qualities of a 90-degree elbow make it a good fit for plastics, foodstuffs, and fine powders.

Q: How many feet is a 90 degree elbow?

A: A hard turn 90 degree elbow equals 17 feet of straight pipe. Two hard turn 90 degree elbows as displayed in Figure 2 equaled the pressure drop of 52 feet of straight pipe! Some of the air entering a PVC pipe needs to make a 90 degree turn to enter the pipe.

Q: What is the difference between a 90 degree elbow and a 90 degree street elbow?

A: The difference between a street elbow and a regular elbow is the gender of its two connections. A regular elbow has a hub or female-threaded connection on each end, so it can join two male pipes. Instead, a street elbow has a female fitting on one end and a male fitting on the other.

Q: What are the degrees of pipe elbows?

A: Classified by Direction Angle.As we know, according to fluid direction of the pipelines, elbow can be divided into different degrees, such as 45 degree, 90 degree,180 degree, which are most common degrees. Also there has 60 degree and 120 degree, for some special pipelines.

Q: What is the degree of elbows?

A: There are 45 degrees, 90 degrees, and 180 degree elbows according to fluid directions, It comes in a variety of varieties depending on the body material, including stainless steel, carbon steel, and alloy steel, There are two types of elbows: those with a short radius (SR elbow) and those with a long radius (LR elbow),

Q: What is the difference between a 90 degree elbow and a 90 degree street elbow?

Q: How many feet is a 90 degree elbow?

Q: What is the formula of 90 degree elbow?

A: The outer arc length = (center height + radius) * 3.14 ≤ 2 ≤ 360 * degrees, that is, (stamp height) * 3.14 ≤ 2 ≤ 360 * degrees, from which the outer arc length of 90 degree elbow can be calculated = poke height * 3.14 × 2. Inner arc length = (center height-radius) * 3.14 ≤ 2 ≤ 360 * degrees.

Q: What is the standard carbon steel elbow?

A: Carbon steel elbow is a weldable & threaded pipe fitting that allows for change of flow direction, we manufactured them as standard of ASME B16. 9 and B16. 11. ASTM A234 WPB Elbow is the common used in the oil and gas industires.If the radius is the same as pipe diameter, it called short radius elbow, also called SR elbow, normally for low pressure and low speed pipelines. If the radius is larger than pipe diameter, R ≥ 1.5 Diameter, then we call it a long radius elbow (LR Elbow), applied for high pressure and high flow rate pipelines.

Q: What is the difference between carbon steel pipe and black steel pipe?

A: Black steel pipe is not really a specification but rather a generic term used primarily by plumbers to distinguish regular steel pipe from galvanized steel pipe. Black steel pipes are cast from several grades of ductile or malleable iron, whereas carbon steel pipes are generally welded or seamless.

Q: Can you use a 90 degree elbow in a drain pipe?

A: In drainage the Universal Plumbing Code requires long sweep 90 degree elbows for horizontal direction changes and at the bottom of stacks to go from vertical to horizontal regular 90 degree elbow are only allowed to turn down like in a horizontal to vertical direction change.

Q: What is the difference between Grade A and Grade B carbon steel pipe?

A: Grade A pipes are suited for general structural and low-pressure applications, while grade B pipes offer increased strength and resilience, making them suitable for more demanding industrial, plumbing, and mechanical systems.If you need your piping system to get turn or get around something in the way, you will need to bend your pipeline around with PVC elbows. Elbows are most commonly available in 90-degree angles and 45-degree angles, so your pipeline can be directed however you want it.

Q: What is the difference between carbon steel and standard steel?

A: Carbon steel has a significant advantage over mild steel in terms of strength. Carbon steel can be up to 20% stronger than mild steel, making it an excellent choice for high-strength applications or where high hardness is required. One of the most significant disadvantages of carbon steel is its high cost.

We're professional butt weld fittings manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale high-grade butt weld fittings at low price from our factory. Contact us for cheap products.