Butt Weld Cap Fittings Manufacturer in India
Butt Weld Cap Fittings Manufacturer in India
Sachiya Steel International is a trusted Butt Weld Cap Fittings Manufacturer in India, established in 2005 and headquartered in Mumbai. With 20+ years of industry experience, we supply industrial steel products to customers across India and 85+ countries worldwide. We serve buyers, distributors, and project suppliers across various industries, focusing on quality, competitive pricing, and reliable service.
We follow quality management practices supported by ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, along with applicable TÜV certifications. Our products meet relevant ASTM, ASME, and other international standards as required. With a focus on material traceability, inspection documentation, and timely delivery, we support standard orders, bulk requirements, and industrial projects in domestic and international markets.
What Are Butt Weld Cap Fittings?
Butt weld cap fittings are pipe fittings used to close the open end of a pipe by welding the cap directly to it. They create a permanent connection that helps prevent fluid or gas leakage and protects the piping system from outside contaminants. These fittings are widely used in oil and gas, petrochemical, chemical processing, power generation, and other industrial applications where secure pipe closure is required.
Butt weld caps are available in different sizes, wall thicknesses, and material grades to suit various operating conditions. They are commonly manufactured from carbon steel, stainless steel, alloy steel, duplex steel, and other materials. The cap connects to the pipe through a butt weld joint, with the dimensions and end preparation selected according to the applicable standards and project requirements. Choosing the correct cap depends on pipe size, material, pressure, temperature, and the service conditions of the system.
Types of Caps Fittings
Explore our range of industrial cap fittings, including pipe end caps, butt weld caps, threaded caps, socket weld caps, stainless steel caps and carbon steel caps for diverse piping applications.
Pipe End Cap Fittings
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Butt Weld Cap Fittings
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Threaded Cap Fittings
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Socket Weld Cap Fittings
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Stainless Steel Cap Fittings
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Carbon Steel Cap Fittings
→Butt Weld Cap Fittings Types We Supply
As an experienced butt weld cap fittings manufacturer, we supply different types of caps to meet industrial piping requirements. Our range covers various material grades, manufacturing methods, and specifications for applications in oil and gas, petrochemical, chemical processing, power generation, and other industries.
- Seamless Butt Weld Caps: Made without a welded seam and suitable for applications requiring seamless construction.
- Welded Butt Weld Caps: Manufactured using welded construction to meet specific project requirements.
- Carbon Steel Butt Weld Caps: Commonly used in industrial pipelines, oil and gas facilities, and water systems.
- Stainless Steel Butt Weld Caps: Suitable for applications that require corrosion resistance.
- Alloy Steel Butt Weld Caps: Used in high-temperature applications such as refineries and power plants.
- Duplex and Super Duplex Butt Weld Caps: Suitable for demanding environments where strength and corrosion resistance are important.
- Nickel Alloy Butt Weld Caps: Used in specialised applications involving challenging chemical and operating conditions.
We supply butt weld cap fittings in different sizes, wall thicknesses, and material grades according to applicable standards and customer specifications.
Why Choose Butt Weld Cap Fittings?
Butt weld cap fittings provide a permanent way to close pipe ends in industrial piping systems. Their welded connection creates a smooth, continuous joint that supports reliable flow control and reduces the risk of leakage when properly selected and installed. They are suitable for piping networks that require secure closure and long-term performance under specific operating conditions.
- Strong Welded Joint: Connects directly to the pipe to create a permanent closure.
- Leakage Control: Helps prevent fluids and gases from escaping through open pipe ends.
- Smooth Internal Surface: Supports consistent piping design with fewer internal obstructions.
- Material Flexibility: Available in carbon steel, stainless steel, alloy steel, duplex, and nickel alloys.
- Industrial Applications: Used in oil and gas, petrochemical, chemical processing, power generation, and marine industries.
- Different Specifications: Available in various sizes and wall thicknesses to match piping design requirements.
Selecting the right butt weld cap depends on pipe dimensions, material grade, pressure, temperature, and service conditions. We supply fittings to meet different industrial requirements, with a focus on quality, material traceability, and dependable delivery.
Types of Pipe Fittings
Explore our range of industrial pipe fittings, including elbows, tees, reducers, caps, stub ends, bends and other fittings for diverse piping applications and engineering requirements. s.
Pipe Fittings
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Elbows Fittings
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Tees Fittings
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Reducers Fittings
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Caps Fittings
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Stub Ends Fittings
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Crosses Fittings
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Nipples Fittings
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Unions Fittings
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Plugs Fittings
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Bushings Fittings
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Swage Nipples
→Get Certified Butt Weld Cap Fittings at Competitive Factory Prices
Butt Weld Cap Fittings Specifications
| Property | Specification |
|---|---|
| Product Name | Butt Weld Cap Fittings |
| Types | Standard ellipsoidal, seamless, welded, hot formed, cold formed, heavy wall, hemispherical |
| Size Range | 1/2" to 24" NB |
| Head Shape | 2:1 ellipsoidal (standard), hemispherical on request |
| Wall Thickness | Sch 5S, 10S, 10, 20, 30, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS |
| Materials | Carbon steel, low temperature carbon steel, alloy steel, stainless steel, duplex, super duplex, nickel alloys |
| Dimension Standards | ASME B16.9, MSS SP-43, MSS SP-75 |
| Material Standards | ASTM A234, A403, A420, A815, B366 |
| End Type | Bevel end per ASME B16.25 |
| Construction | Seamless and welded |
| Surface Finish | Black, oil coated, pickled, sand blasted, polished |
| Heat Treatment | Normalising, stress relieving, solution annealing |
| Testing | PMI, hardness, dimensional, hydrostatic, NDT |
| Certification | EN 10204 3.1, 3.2 on request |
| How to Order | Size, schedule, grade and standard (for example: Butt Weld Cap 8", Sch 40, A234 WPB, ASME B16.9) |
| Custom Work | Special sizes, walls, grades, heads and connections |
Butt Weld Cap Fittings Chemical Composition
Values are in %, maximum unless a range is shown.
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| A234 WPB | 0.30 | 0.29–1.06 | 0.10 min | 0.050 | 0.058 | 0.40 | 0.40 | 0.15 |
| A403 WP304 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0–20.0 | 8.0–11.0 | – |
| A403 WP304L | 0.035 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0–20.0 | 8.0–13.0 | – |
| A403 WP316 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
| A403 WP316L | 0.035 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0–18.0 | 10.0–15.0 | 2.0–3.0 |
| A403 WP321 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 17.0–19.0 | 9.0–12.0 | – |
| A815 UNS S31803 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 |
WP321 holds titanium at 5 times the carbon content (minimum). Duplex S31803 holds 0.08–0.20% nitrogen.
Butt Weld Cap Fittings Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| A234 WPB | 415–585 | 240 min | 22 min |
| A420 WPL6 | 415–585 | 240 min | 22 min |
| A234 WP22 Class 1 | 415–585 | 205 min | 22 min |
| A403 WP304 / WP316 / WP321 | 515 min | 205 min | 28 min |
| A403 WP304L / WP316L | 485 min | 170 min | 28 min |
| A815 UNS S31803 | 620 min | 450 min | 25 min |
Butt Weld Cap Fittings Size Chart
| NB | Inch | Pipe OD (mm) | Where This Butt Weld Cap Goes |
|---|---|---|---|
| 15 | 1/2" | 21.3 | Instrument and sample line ends |
| 25 | 1" | 33.4 | Chemical dosing and utility air ends |
| 50 | 2" | 60.3 | Cooling water and drain line ends |
| 80 | 3" | 88.9 | Fire water and fuel line ends |
| 100 | 4" | 114.3 | Steam and process header ends |
| 150 | 6" | 168.3 | Pump manifold ends and test closures |
| 200 | 8" | 219.1 | Main process header ends |
| 250 | 10" | 273.1 | Plant header and pig trap closures |
| 300 | 12" | 323.9 | Transfer line and cooling circuit ends |
| 400 | 16" | 406.4 | Refinery and plant main closures |
| 500 | 20" | 508.0 | Water transmission header ends |
| 600 | 24" | 609.6 | Pipeline and large header closures |
Butt Weld Cap Fittings Dimension Chart (ASME B16.9)
Dimension E is the overall length of the cap for standard walls, and E1 is the overall length for heavier walls, as set by ASME B16.9. All dimensions are in mm.
| NPS | Pipe OD | Length (E) | Length for Heavier Walls (E1) | Sch 40 Wall | Sch 80 Wall | Sch 160 Wall |
|---|---|---|---|---|---|---|
| 1/2" | 21.3 | 25 | 25 | 2.77 | 3.73 | 4.78 |
| 3/4" | 26.7 | 25 | 25 | 2.87 | 3.91 | 5.56 |
| 1" | 33.4 | 38 | 38 | 3.38 | 4.55 | 6.35 |
| 1 1/4" | 42.2 | 38 | 38 | 3.56 | 4.85 | 6.35 |
| 1 1/2" | 48.3 | 38 | 38 | 3.68 | 5.08 | 7.14 |
| 2" | 60.3 | 38 | 44 | 3.91 | 5.54 | 8.74 |
| 2 1/2" | 73.0 | 38 | 51 | 5.16 | 7.01 | 9.53 |
| 3" | 88.9 | 51 | 64 | 5.49 | 7.62 | 11.13 |
| 4" | 114.3 | 64 | 76 | 6.02 | 8.56 | 13.49 |
| 5" | 141.3 | 76 | 89 | 6.55 | 9.53 | 15.88 |
| 6" | 168.3 | 89 | 102 | 7.11 | 10.97 | 18.26 |
| 8" | 219.1 | 102 | 127 | 8.18 | 12.70 | 23.01 |
| 10" | 273.1 | 127 | 152 | 9.27 | 15.09 | 28.58 |
| 12" | 323.9 | 152 | 178 | 10.31 | 17.48 | 33.32 |
| 14" | 355.6 | 165 | 191 | 11.13 | 19.05 | 35.71 |
| 16" | 406.4 | 178 | 203 | 12.70 | 21.44 | 40.49 |
| 18" | 457.2 | 203 | 229 | 14.27 | 23.83 | 45.24 |
| 20" | 508.0 | 229 | 254 | 15.09 | 26.19 | 50.01 |
| 24" | 609.6 | 267 | 305 | 17.48 | 30.96 | 59.54 |
Wall thickness follows the schedule of the connecting pipe. For sizes and walls not shown, we cut the cap to the ASME B16.9 table or to your drawing.
Butt Weld Cap Fittings Grades We Supply
Different industrial applications require materials that can withstand specific temperatures, pressures, and working environments. As an experienced butt weld cap fittings supplier in India, we offer a range of material grades to meet the needs of oil and gas pipelines, refineries, power plants, chemical processing units, and other industries.
- Carbon Steel: ASTM A234 WPB for general piping systems carrying oil, gas, steam, and water.
- Low-Temperature Steel: ASTM A420 WPL6 for piping applications in low-temperature conditions.
- High-Yield Steel: Applicable MSS SP-75 grades for high-strength pipeline requirements.
- Alloy Steel: ASTM A234 WP11, WP22, and WP91 for high-temperature service in boilers, refineries, and power plants.
- Stainless Steel: ASTM A403 WP304, WP304L, WP316, WP316L, WP321, and WP347 for applications requiring corrosion resistance.
- Duplex and Super Duplex Steel: ASTM A815 UNS S31803, S32205, and S32750 for demanding environments, including seawater and chloride-rich conditions.
- Nickel Alloys: Inconel, Monel, and Hastelloy grades for specialised industrial applications.
We supply butt weld cap fittings based on project specifications, material requirements, and applicable standards. Material test certificates and inspection reports can be provided as required to support quality checks and material traceability.
Butt Weld Cap Fittings Standards and Certifications
We manufacture butt weld cap fittings according to applicable industry standards to meet different piping requirements. As a butt weld cap fittings supplier in India, we offer caps to ASME B16.9, stainless steel caps to MSS SP-43 and high-yield pipeline caps to MSS SP-75. Our fittings follow the relevant material standards, including ASTM A234 for carbon and alloy steel, ASTM A403 for stainless steel, ASTM A420 for low-temperature steel, ASTM A815 for duplex steel and ASTM B366 for nickel alloys. Weld end preparation follows ASME B16.25 where specified.
Our quality process includes material traceability, dimensional checks and inspection reports as required by the project. We can provide EN 10204 3.1 material test certificates, chemical and mechanical test reports, and positive material identification (PMI) reports. EN 10204 3.2 certification, third-party inspection and applicable quality or pressure equipment compliance documentation can also be arranged according to project requirements.
Butt Weld Cap Fittings Applications
- Oil and Gas Pipelines: Butt weld cap fittings close the ends of headers, manifolds and pig traps, and seal sections during pressure testing.
- Refineries and Petrochemical Plants: Alloy steel caps close process headers, dead legs and spare branches in hydrocarbon piping.
- Power Plants: WP22 and WP91 caps seal steam and boiler feed headers at high temperature and pressure.
- Chemical Processing: Stainless steel 316L and duplex caps close transfer and dosing lines handling corrosive fluids.
- Pharmaceutical and Food Plants: Polished stainless steel caps close hygienic lines and spare connections.
- Water Treatment and Desalination: Super duplex and 316L caps close brine and seawater lines and future tie-in points.
- Hydrostatic Testing and Commissioning: Crews weld caps on to seal a pipe section during testing, and many projects source them from a butt weld cap fittings supplier in India like us.
- Future Expansion Points: Fabricators cap a header end now so that it can be cut open and extended later.
- Fire Protection and HVAC: Carbon steel caps close sprinkler mains, chilled water headers and utility lines.
Butt Weld Cap Fittings Manufacturing Capacity and Export Capability
Our manufacturing facility in Vasai, near Mumbai, has the capacity to produce up to 100 tonnes of butt weld cap fittings per month. We manufacture caps from 1/2" to 24" NB in carbon steel, stainless steel, alloy steel, duplex and other grades. With forming, heat treatment and machining handled at one facility, we maintain better control over production and can accommodate different sizes and material grades in the same order.
We also have an export capacity of up to 100 tonnes per month and handle shipments ranging from sample quantities to full container loads. As a butt weld cap fittings supplier in India, we arrange shipments through Nhava Sheva (JNPT) and Mundra ports and manage export documentation in-house. Our products reach customers in 85+ countries, with a focus on proper packaging, smooth customs clearance and timely delivery.
Why Choose Us as Your Butt Weld Cap Fittings Manufacturer in India?
You should choose us because we have been supplying industrial steel products since 2005. With 20+ years of experience, we understand the needs of industrial buyers, distributors, and project suppliers. We focus on product quality, accurate specifications, competitive pricing, and timely delivery to support piping projects across different industries.
We offer a wide range of material grades, including carbon steel, stainless steel, alloy steel, duplex, super duplex, and nickel alloys. We follow applicable ASTM, ASME, and other international standards based on product requirements. Material test certificates and inspection reports are available as required to support quality checks and material traceability.
We serve customers in 85+ countries and handle standard orders, bulk quantities, and project-specific requirements. Our established manufacturing and sourcing capabilities help us support domestic and international buyers with reliable products, clear communication, and shipment planning. We aim to build long-term business relationships through dependable service and delivery within agreed schedules.
Countries We Export To
We export butt weld cap fittings to customers in 85+ countries, serving industrial buyers, distributors, and project suppliers across major global markets. Our export network supports industries such as oil and gas, petrochemicals, chemical processing, power generation, marine, and engineering.
- North America: USA, Canada, and Mexico
- Europe: United Kingdom, Germany, France, Italy, Netherlands, and Spain
- Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait, and Bahrain
- Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam, and Australia
- Africa: South Africa, Nigeria, Egypt, and Kenya
- South America: Brazil, Chile, and Peru
We focus on secure packaging, accurate export documentation, and reliable shipment planning to support smooth international deliveries. We can provide material test certificates and arrange third-party inspections according to order requirements. Our team coordinates export paperwork and dispatch arrangements to help customers receive their products within agreed delivery schedules.