Steel Cap

Your Professional Steel Cap Supplier

Established in 2009 as a national high-tech enterprise with 15 years of expertise in R&D, production, and sales of stainless steel pipe fittings and pipeline accessories.

Our popular product offerings primarily include butt welding pipe fittings, forged pipe fittings, stainless steel flanges, stainless steel pipes, and related components.

Inconel 625 High Temperature Cap
This process leverages the plastic deformation property of metals. By applying pressure, it flattens microscopic convex peaks on the workpiece surface, reducing surface roughness effectively. High...
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Heavy-Wall Industrial Caps
National standard: GB/T12459, GB/T13401, HG/T21635, HG/T21631
American standard: ASME/ANSI B16.9 MSS SP43
Japanese standard: JIS B 2311/2220
German standard:...
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Stainless Steel Caps
The models of seamless tube caps are usually divided according to the material, connection method, execution standards, etc. In terms of materials, there are carbon steel, stainless steel, etc.;...
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Why Choose us

Advanced Production Equipment

We utilize specialized equipment for precision cutting, forming, welding, heat treatment, and surface finishing. Examples include heat treatment furnaces, large hydraulic press machines for manufacturing tees and reducers, laser cutting machines for pipes, high-power fiber laser cutting machines for plates, and elbow cold forming machines, among others.

Quality Control

Our quality and safety management systems are certified under ISO 9001:2015, API Q1, ISO 45001 (OHSMS), and ISO 14001 (Environmental Management System), ensuring compliance with international standards.

Specialized Workshops

We maintain a fully equipped physical and chemical laboratory, along with a dedicated inspection workshop, to support comprehensive quality assurance and control processes.

Parameter

National standard:	GB/T12459, GB/T13401, HG/T21635, HG/T21631
American standard:	ASME/ANSI B16.9 MSS SP43
Japanese standard:	JIS B 2311/2220
German standard:	DIN2605/2616/2615/2617
Russian standard:	GOST 17375/17376 and so on
Pressure rating:	SCH5S-SCH160; XXS

Benefits of Steel Cap

Prevents leaks and corrosion

One of the primary benefits of using steel cap is that they prevent leaks. When pipes are left exposed without caps, they are susceptible to corrosion. Corrosion will wear down the pipes, rendering them ineffective and prone to leaks. With steel cap, pipes are sealed off, protecting them from corrosion, which can lead to leaks.

Cost-Effective solution

Steel caps are a cost-effective solution for construction and infrastructure projects. They are easy to install and require little to no maintenance, making them a more cost-effective solution than other fittings. Also, end cap fittings prevent extensive repairs, which can be very expensive.

Ideal for Temporary Applications

Steel caps are ideal for temporary construction projects like testing or installing pipelines. Instead of cutting and welding, temporary installation of pipes can be done quickly using end cap fittings.

It fits various shapes and sizes of pipes

Unlike other pipe fittings, steel cap can seal pipes of various sizes and shapes, including circular, rectangular, oval, and square. One fitting can be used for numerous pipes of different sizes and shapes with end cap fittings.

Environmentally Friendly

Steel caps are environmentally friendly as they reduce environmental pollution by preventing leaks. Leaks could lead to the discharge of hazardous material that can harm the environment and human health. Steel caps prevent such pollution.

Types of Steel Cap

Butt Weld Cap:

Characteristics:

With a beveled end, connected to the pipe by butt welding to form a strong, seamless connection.

Advantages:

High strength, excellent sealing performance, suitable for high pressure, high temperature, low temperature and stress changes in the pipeline system.

Applications:

Oil and gas, chemical, electric power, marine engineering and other industries that require high quality and safety of connections.

Threaded Cap:

Characteristics:

Bore with a thread, through the thread with the same threaded pipe connection.

Advantages:

No welding, very easy to install and dismantle, suitable for low-pressure, non-hazardous media or the need for frequent dismantling and maintenance occasions.

Applications:

General civil piping, some industrial auxiliary piping, instrumentation connections, etc.

Socket Weld Cap:

Features:

With socket, pipe inserted into the socket, through the external fillet weld connection.

Advantages:

Strength higher than the threaded flange, good sealing, suitable for small diameter, medium and high pressure pipelines.

Applications:

Chemical, pharmaceutical, instrumentation piping, etc., especially in the strict control of leakage occasions.

Application of Steel Cap

Chemical Processing:

Acid and alkali pipelines.

Food & Beverage:

Hygienic stainless steel tube end caps for sanitary systems.

Water Treatment:

Sealing pipelines in potable water and wastewater facilities.

Marine Industry:

Corrosion-resistant closures in ship piping systems.

Construction & Infrastructure:

Pipeline terminations in large-scale utility projects.

Additional Information

Shipping	We provide multiple trustworthy shipping options such as UPS, DHL, TNT, EMS, and FedEx Express.
Terms Of Payment	We usually accept T/T, L/C, Paypal, Credit card, etc. If you prefer other payments terms, please feel free to discuss with us.

FAQ

Q: How do you select the right pipe end cap?

A: A pipe's thread size is important in finding the right end cap. The best end cap will fit onto the pipe threading and tightly seal it, improving the pipe's structure while preventing leakage and contamination.

Q: What is the difference between pipe cap and end cap?

A: Pipe caps are made to cover pipe ends of various forms and serve as a protective measure. End Cap Pipe Fittings are mostly used to waterproof the connections. Additionally, they are employed to seal the extremities of hydraulic or pneumatic pipelines and tubes.

Q: How to tighten a pipe cap?

A: You can tighten by hand, by using a wrench, or a mixture of the two. By tightening the fitting with your hand, you can ensure that the threads are lined up correctly. If threads crossover, not only does it make it harder to tighten, you also risk stripping the threads.

Q: What are pipe caps called?

A: Cap pipe fittings, also known as pipe caps or end caps, are small devices that are used to seal the end of a pipe. They are typically made of materials such as metal, plastic, or rubber, depending on the application and the type of pipe being used.

As one of the leading steel cap manufacturers and suppliers in China, we warmly welcome you to buy high quality steel cap made in China here from our factory. Good service and punctual delivery are available.

Stainless steel end caps, Inconel 625 High Temperature Cap, steel cap