Pipe Cap
- PRODUCT DETAIL
Pipe Cap-Wrougth Steel Butt-welding Pipe Fittings Cap
Description
Pipe cap fittings are used to close the end of piping systems and pressure vessels, providing pressure boundary sealing and mechanical protection for pipe ends. Pipe caps are commonly used during system shutdown, future expansion connections, testing systems and equipment isolation.
In industrial piping systems, pipe caps are typically installed together with butt weld fittings, pipes and pipe flanges to complete piping systems and pressure boundaries. Pipe caps may be welded to the pipe end permanently or used temporarily during hydrostatic testing and commissioning activities.
Widely used in petrochemical plants, offshore platforms, refineries, LNG facilities, power plants and heavy industrial piping systems.
Specifications / Standards
They are manufactured according to international piping and pressure vessel standards to ensure dimensional compatibility, welding quality and pressure rating compliance.
Typical standards include:
ASME B16.9 – Factory-Made Butt Welding Fittings
ASME B16.28 – Short Radius Fittings
MSS SP-75 – High Yield Butt Weld Fittings
EN 10253-2 – Butt Weld Fittings for Pressure Purposes
EN 10253-4 – Stainless Steel Butt Weld Fittings
ASTM A234 – Carbon Steel Pipe Fittings
ASTM A403 – Stainless Steel Pipe Fittings
ASTM A815 – Duplex Stainless Steel Pipe Fittings
ASTM B366 – Nickel Alloy Pipe Fittings
EN 10204 – Inspection Certificates
They are often supplied together with stainless steel pipe fittings and piping materials for complete project piping packages.
Material Grades
Can be manufactured in carbon steel, stainless steel, duplex stainless steel and nickel alloys depending on corrosion conditions, temperature and pressure requirements.
| Nickel Alloy | ASTM/ASME SB366 Alloy 200/UNS N02200, Alloy 800HT/Incoloy 800HT/UNS N08811, Alloy 400/Monel 400/UNS N04400, F904L/UNS N08904, Alloy 800/Incoloy 800/UNS N08800, Alloy C-2000/UNS N06200, Alloy 925/Incoloy 925/UNS N09925, Alloy C-22/UNS N06022, Alloy 201/UNS N02201, Alloy C-276/Hastelloy C-276/UNS N10276, Alloy 625/UNS N06625, Nimonic 80A/Nickel Alloy 80A/UNS N07080, Alloy K-500/Monel K-500, Alloy 20/UNS N08020, Alloy 800H/Incoloy 800H/UNS N08810,Alloy 600/Inconel 600/UNS N06600, Alloy 31/UNS N08031,Hastelloy C-276/UNS N10276, Alloy 825/Incoloy 825/UNS N08825,Alloy 20/N08020 |
| Carbob Steel | ASTM/ASME SA 234 WPB |
| Low Alloy Steel | ASTM/ASME SA 234 WP91, WP11, WP22, WP9, |
| Low Temp Carbon steel | ASTM/ASME SA 420 WPL3-WPL 6 |
| Duplex and Super Duplex Steel | ASTM/ASME SA 815 WPS31803, WPS32205, WPS32750, WPS32760, WPS32550 |
| Stainless Steel | ASTM/ASME SA403 WP 304, WP 304L, WP 304H, WP 304LN, WP 304N, ASTM/ASME A403 WP 316, WP 316L, WP 316H, WP 316LN, WP 316N, WP 316Ti, ASTM/ASME A403 WP 321, WP 321H ASTM/ASME A403 WP 347, WP 347H |
| High Strength Ferritic Steel | ASTM/ASME SA 860 WPHY 42, WPHY 46, WPHY 52, WPHY 60, WPHY 65, WPHY 70 |
| Titanium | ASTM/ASME SB 337 Grade 1, Grade 2, Grade 11, Grade 12 |
| Cu Ni Alloy | ASTM/ASME SB 466 UNS C70600 Cu/Ni 90/10 |
Material grades are selected according to project specifications, corrosion allowance and operating conditions.
Size Range
Typical size range for pipe caps:
Size Range: 1/2″ to 72″
Wall Thickness: SCH 5S – SCH XXS
Types:
Seamless Pipe Caps
Welded Pipe Caps
Fabricated Pipe Caps
End Type:
Butt Weld End
Beveled End
Plain End
Special sizes and custom pipe caps can be manufactured according to project drawings and piping specifications.
Manufacturing Process
The manufacturing process for pipe caps typically includes:
Raw material pipe or plate selection
Cutting
Hot forming
Cold forming (for small sizes)
Heat treatment
Edge preparation and bevel machining
Surface treatment (Pickling / Passivation / Shot blasting)
Marking and traceability identification
Inspection and testing
Packing and shipment
All are fully traceable from raw material heat number to final inspection documentation.
Inspection & Testing
Inspection and testing may include:
Visual inspection
Dimensional inspection
PMI (Positive Material Identification)
Mechanical testing
Hardness testing
Ultrasonic testing (UT)
Dye penetrant testing (PT)
Magnetic particle testing (MT)
Radiography testing (RT) for welded caps
Hydrostatic testing (if required)
Third-party inspection (SGS / BV / TUV / DNV)
Inspection certificates can be supplied according to EN 10204 3.1 or 3.2.
Applications / Industries
widely used in industrial piping systems across various industries:
Oil & Gas
Petrochemical
Offshore & FPSO
LNG & Gas Processing
Power Plants
Nuclear Industry
Chemical Plants
Desalination Plants
Shipbuilding
Heavy Industry
caps are commonly used for pipe end closure, equipment isolation, hydrostatic testing systems and future pipeline expansion points.
Packaging & Delivery
Pipe caps are packed to prevent damage during transportation and storage.
Typical packing methods include:
Wooden cases
Plywood boxes
Pallets
Waterproof wrapping
End protection
Heat number marking
Packing list and traceability documentation
Export packing is suitable for sea freight, air freight and project site delivery.
Why Choose Us
We supply pipe caps for industrial piping projects with complete material traceability, inspection documentation and project packaging requirements.
Our pipe caps are supplied to EPC contractors, fabrication workshops, offshore projects, petrochemical plants and power plant projects where documentation, quality control and delivery reliability are critical.
We support complete piping material supply including pipes, fittings, flanges, forgings and prefabrication pipe spools, ensuring compatibility between all piping components and project specifications.
