Nascent Fittings Inc.·Copper Alloy
Copper Alloy Caps
Buttweld and forged pipe caps in stainless, carbon, alloy & duplex steel. ASME B16.9 / B16.11 sizes with MTC EN 10204 3.1 and worldwide shipping.

- Material
- Copper Alloy
- Size
- 1/2" (15 NB) to 48" (1200NB)
- Grades
- UNS C70600 (Cu-Ni 90/10), UNS C71500 (Cu-Ni 70/30), UNS C71640
- Corrosion
- Excellent
About
Copper Alloy Caps
Product overview combined with Copper Alloy material context for project selection.
The advantages of butt-weld end cap include preventing leakage permanently, adding strength and power to the piping structure and reducing pressure losses, but the cap is firmly fixed, which can't be unbolted to access the pipeline like a blind flange.
Their primary function is to waterproof piping networks in addition to resisting chemicals, moisture and weather. Our end caps have pressure releasing abilities and flexible. We offer threaded ANSI B16.9 Pipe Caps for quick assembly that also avoid the pipe from getting cracked or damaged. Our End caps are available in high temperature resisting materials, in a variety of colours, finishes and sizes.
Manufacturing note
Nascent Fittings Inc is a manufacturer and supplier of Pipe Caps. Our high quality, strong, corrosion resistant pipes caps come in various sizes to meet your all pipe fitting needs. These pipe fittings can be customized in terms of sizes and thickness as per requirement of our clients. We offer these SS pipe cap fittings in all major grades such as 304 / 304 L and 316 /316 L and many more.
Typical applications
- Marine
- Shipbuilding
- Offshore Platforms
- Heat Exchangers
- Condensers
- Power Generation
Copper Alloy grades
Available grades for Caps
Drawn from the Copper Alloy catalog and this product’s material specification.
UNS C70600 (Cu-Ni 90/10)
UNS C70600
Copper Nickel 90/10 alloy with excellent seawater corrosion resistance, biofouling resistance, and long service life.
Best for · General marine and seawater service
UNS C71500 (Cu-Ni 70/30)
UNS C71500
Copper Nickel 70/30 alloy with higher nickel content providing enhanced corrosion resistance and superior strength in aggressive seawater environments.
Best for · High-velocity seawater and offshore service
UNS C71640
UNS C71640
Enhanced Copper Nickel alloy developed for demanding marine and offshore applications requiring superior corrosion resistance and mechanical strength.
Best for · Critical offshore and seawater applications
Also available in
Other materials for this product
View Caps in another material grade family.
Scroll →
Compliance
Standards & certificates
Specifications and documentation typically referenced for this product line — details from our shared compliance catalog.
Standards
7ASME B16.9
ASMEFactory-made wrought buttwelding fittings.
- Scope
- Dimensions, tolerances, ratings, and markings for wrought buttweld fittings.
- Applies To
- Elbows, tees, reducers, caps, crosses, stub ends and related forms
- Size Coverage
- Typically NPS ½ through 48
- Related
- MSS SP-43, ASME B16.28
ASME B16.28
ASMEWrought steel buttwelding short radius elbows and returns.
- Scope
- Dimensions and marking for short-radius elbows and 180° returns.
- Applies To
- Short radius elbows and return bends
- Related
- ASME B16.9
MSS SP-43
MSSWrought and fabricated butt-welding fittings for low pressure, corrosion resistant applications.
- Scope
- Dimensions for stainless and alloy butt-weld fittings intended for low-pressure service.
- Applies To
- Buttweld fittings in corrosion-resistant alloys
- Related
- ASME B16.9
ASTM / ASME SB61
ASTM / ASMESteam or valve bronze castings.
- Scope
- Composition and property requirements for bronze castings used under pressure.
- Applies To
- Valves, fittings and flanges in marine and industrial service
ASTM / ASME SB62
ASTM / ASMEComposition bronze or ounce metal castings.
- Scope
- Cast bronze for pressure-containing valves and fittings.
- Applies To
- Valves, fittings and flanges
ASTM B151
ASTMCopper-nickel-zinc alloy (nickel silver) and copper-nickel rod and bar.
- Scope
- Rod and bar products in copper-nickel alloys.
- Applies To
- Machined fittings, fasteners and bar stock components
ASTM B152
ASTMCopper sheet, strip, plate, and rolled bar.
- Scope
- Copper flat products for fabrication and cladding.
- Applies To
- Sheet/plate feed stock for fabricated copper components
Certificates
4EN 10204 3.1
Mill test certificate with inspection by the manufacturer’s authorized inspection representative, independent of manufacturing.
- Type
- Inspection document (MTC)
- Scope
- States chemical analysis, mechanical test results and heat / lot identification for the supplied material.
- Documentation
- EN 10204 Type 3.1
- Benefit
- Provides traceable material evidence required on most industrial RFQs.
ISO 9001
Quality Management System certification.
- Type
- Quality Management System
- Scope
- Demonstrates a documented QMS covering process control, traceability and continual improvement across manufacturing and supply.
- Benefit
- Assures buyers of consistent product quality and controlled production practices.
- Issued As
- Third-party accredited certificate
PED
Pressure Equipment Directive compliance for equipment placed on the EU market.
- Type
- Regulatory conformity
- Scope
- Design and conformity assessment requirements for pressure equipment and assemblies in the European Union.
- Benefit
- Enables supply of pressure-rated components into EU projects when PED conformity is required.
- Related
- CE marking / Notified Body routes as applicable
IBR
Indian Boiler Regulations approval for boiler-quality piping materials and components.
- Type
- Regulatory approval
- Scope
- Materials and components intended for use under Indian boiler installations.
- Benefit
- Required for many power and process projects under IBR jurisdiction in India.
Manufacturing
Crafted with care
Workshop and production views for Copper Alloy Caps — the same craftsmanship photos from our plant archives, shown in webp.
2 photos


People also ask
Questions about Caps
Nascent Fittings Inc. answers common buyer questions for this line.
Does Nascent Fittings Inc. manufacture Caps?+
Yes. Nascent Fittings Inc. manufactures and supplies Caps for industrial piping projects, with material grades and sizes aligned to project specifications.
Can Nascent Fittings Inc. export Caps worldwide?+
Yes. We export Caps globally with standard export packaging, material test certificates, and documentation support for international shipments.
What materials are available for Caps?+
Caps is available in carbon steel, alloy steel, stainless steel, duplex, nickel alloys, copper alloys, aluminium, titanium and other project-specific materials as required.
Need pricing for Copper Alloy Caps?
Share sizes, material grade and quantity — manufacturing options and delivery timelines follow.









