Pipe Cap

Pipe caps are butt weld fittings designed to close and seal the ends of piping systems, preventing fluid leakage and protecting pipelines from external contamination. They are commonly used for permanent pipe termination, pressure containment, pipeline testing, and future pipeline expansion requirements.

Manufactured according to ASME B16.9 standards, butt weld pipe caps are available in carbon steel, stainless steel, and alloy steel materials. With excellent strength, accurate dimensions, and reliable welding performance, they are widely applied in oil & gas pipelines, chemical plants, petrochemical systems, power generation facilities, pressure piping, and industrial process systems.

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Technical Specifications

Specification Item	Details
Product Type	Butt Weld Pipe Cap, Weld End Cap, Seamless Pipe Cap
Manufacturing Standards	ASME B16.9, ASTM A234, GB/T, DIN, JIS, GOST
Nominal Diameter	NPS: 1/2"–48", DN: DN15–DN1200, Customized dimensions available
Pressure Rating	Class 150 / 300 / 600 / 900 / 1500 / 2500, PN16 / PN25 / PN40
Wall Thickness	SCH10, SCH20, SCH40, SCH80, SCH160, XXS, Customized wall thickness available
Cap Type	Elliptical Cap: Designed for standard butt weld piping applications with reliable sealing performance. Dished Cap: Suitable for pressure piping and special engineering applications requiring enhanced structural performance.
Materials	Carbon Steel, Stainless Steel, Alloy Steel
Connection Type	Butt Weld Connection
Manufacturing Process	Hot Forming, Cold Forming, Deep Drawing, Precision Machining

Available Materials

Type	Materials	Features & Applications
Carbon Steel Pipe Caps	ASTM A234 WPB, A105, Q235	Provide excellent mechanical strength and cost efficiency. They are widely used in oil & gas pipelines, water systems, general industrial piping, and standard pressure applications.
Stainless Steel Pipe Caps	ASTM A403 WP304, WP316, WP316L	Offer excellent corrosion resistance and durability. They are suitable for chemical processing, food processing, pharmaceutical pipelines, marine systems, and other corrosive environments.
Alloy Steel Pipe Caps	ASTM A234 WP5, WP9, WP11, WP22	Designed for high-temperature and high-pressure service conditions. They are commonly used in power plants, steam systems, petrochemical equipment, and demanding industrial applications.

Manufacturing Standards

Our butt weld pipe caps are manufactured according to international standards including ASME B16.9, ASTM A234, GB/T, DIN, JIS, and GOST.

Strict quality control of raw materials, forming processes, dimensions, and surface inspection ensures reliable sealing performance, accurate installation, and long service life in various piping systems.

Applications

Pipe caps are widely used in oil & gas pipeline systems, petrochemical plants, chemical processing facilities, power generation projects, steam pipeline systems, water treatment systems, pressure piping systems, shipbuilding industry, HVAC piping systems and industrial process pipelines.

FAQ

What is a butt weld pipe cap used for?

A butt weld pipe cap is used to permanently close the end of a pipeline, prevent leakage, and protect the piping system from external contamination.

What standards do your pipe caps comply with?

Our pipe caps are manufactured according to ASME B16.9, ASTM A234, GB/T, DIN, JIS, and other international standards.

What materials are available for pipe caps?

We supply carbon steel, stainless steel, and alloy steel pipe caps, including ASTM A234 WPB, WP304, WP316L, WP11, and WP22 materials.

Can you manufacture customized pipe caps?

Yes. We can customize sizes, materials, wall thicknesses, pressure ratings, standards, markings, and packaging according to customer requirements.

What industries use pipe caps?

Pipe caps are widely used in oil & gas, chemical, petrochemical, power generation, water treatment, and industrial piping systems.

What is the delivery time?

Standard products usually require 15–30 days depending on order quantity and specifications. Customized orders are produced according to project requirements.

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