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SCH40 Carbon Steel Pipe Cap

SCH40 Carbon Steel Pipe Cap

SCH40 Carbon Steel Pipe Cap is a butt-weld pipe fitting to seal the end of pipeline systems in medium to high-pressure applications.

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SCH40 Carbon Steel Pipe Cap is a butt-weld pipe fitting to seal the end of pipeline systems in medium to high-pressure applications. It provides a permanent and leak-proof closure for piping systems used in oil, gas, petrochemical, power generation, and industrial construction projects.

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Product Specifications

 

Item

Description

Type

Carbon Steel Seamless Cap / Butt-Weld Pipe End Cap

Size Range

Seamless:1/2"–24" (DN15–DN600) Welded / Fabricated: 24"–72" (DN600–DN1800)

Thickness

Standard: SCH40 / STD Available options: SCH20, SGP, SCH80, SCH160

Material

Carbon Steel, Alloy Steel, Stainless Steel

Grades

Q235, 20#, ASTM A234 WPB, ASTM A420 WPL6, ASTM A403 WP304/316L

Standard

ASME B16.9, ASME B36.10M, DIN 2617, JIS P2311/2312, BS, API 5L

Connection

Butt Welding

Surface Treatment

Black anti-rust oil / Transparent oil / Hot-dip galvanizing

Quality Grade

First-grade industrial standard

Certification

ISO 9001:2015, CE, SGS

 

 

Applications

 

Due to its high-pressure rating and reliable sealing capabilities, the SCH40 carbon steel cap is an indispensable component in:

 

  • Oil & Gas Exploration: Midstream transmission pipelines and refineries.
  • Chemical Engineering: Processing piping loops and storage tank networks.
  • Power & Utilities: Thermal power plants and municipal high-pressure water grids.
  • Marine & Shipbuilding: Engine room piping and cargo fluid systems. 

 

 

Commercial & Logistics Terms

 

Production Capacity: Our facility delivers an annual output of 13,000 tons of flanges and forged pipe fittings, ensuring a stable supply for large-scale EPC projects.


Delivery Lead Time: 7 to 25 days after order confirmation and payment.


Flexible Payments: L/C at sight, T/T (Telegraphic Transfer).


Export-Standard Packaging: Sea-worthy heavy-duty wooden cases, fumigation-free pallets, or reinforced container packing designed to prevent any transit or moisture damage.


OEM & Customization: The shape, bevel style, and non-standard sizes can be custom-engineered precisely according to client drawings and technical specifications. 

 

 

Factory Support

 

30+ Years of Manufacturing Expertise: Established in 1993, we are a veteran manufacturer specializing in forged flanges and butt-welded pipe fittings based in Mengcun County, China.


Advanced Production Infrastructure: Our 18,000 m2 facility houses a 3500T Hydraulic Press Machine, a 2500D CNC ring rolling machine, and 7 forging hammers, allowing us to fabricate fittings up to a maximum diameter of 2800mm.


Certified Quality Assurance: Fully certified under ISO 9001:2015, 3A, and CE. Our products are trusted and actively imported by distributors and engineering clients across Russia, France, Dubai, the Middle East, Southeast Asia, and South America. 

 

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FAQ

 

Q: What material grades do you use for SCH40 Carbon Steel Pipe Caps?

A: Our standard SCH40 pipe caps are manufactured from premium ASTM A234 WPB carbon steel, which offers optimal strength and weldability for high-temperature and ambient services. We can also provide ASTM A420 WPL6 for low-temperature environments, as well as various alloy and stainless steel grades upon request.

Q: Do your SCH40 pipe caps come with beveled ends?

A: Yes. All our butt-weld pipe caps feature precise Beveled Ends processed in strict accordance with ASME B16.25. This ensures flawless alignment and easy welding on-site. Plain ends can also be customized.

Q: What quality certifications and inspection documents do you provide?

A: Cangzhou Hangxin is an ISO 9001:2015 and CE-certified factory. For every shipment, we provide a Mill Test Certificate (MTR) according to EN 10204 3.1, detailing the exact chemical composition, tensile strength, and hardness test results. Third-party inspections (SGS, BV, etc.) are welcome.

Q: How do you guarantee the quality of large-diameter (24" to 72") pipe caps?

A: While sizes up to 24" are seamless, large-diameter caps are produced via advanced hot-pressing with welded seams. To guarantee 100% safety under high pressure, all welded caps undergo rigorous Non-Destructive Testing (NDT), including Radiographic Testing (RT/X-Ray) and Ultrasonic Testing (UT) to ensure zero welding defects.

Q: What is your standard lead time and packaging for export orders?

A: Our standard delivery time is 7 to 25 days after order confirmation, backed by our 13,000-ton annual capacity. All products are packed in sea-worthy, heavy-duty wooden cases or fumigation-free pallets with internal moisture-proof wrapping to ensure they arrive in perfect condition.

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