DIPTI METAL INDUSTRIES
Butt Weld Pipe Caps (End Caps) — Positive Closure for Critical Piping Systems
Dipti Metal is a global Butt Weld Pipe Caps Manufacturer, Butt Weld Pipe Caps Exporter, Butt Weld Pipe Caps Supplier & Stockist of butt weld end caps engineered for leak-tight closure, accurate fit-up, and robust weldability across oil & gas, petrochemicals, power, marine, water & desalination.
🏭 Dipti Metal: Your Global Source for Butt Weld End Caps
Pipe Caps (End Caps) from Dipti Metal provide reliable, positive closure at the end of a pipeline or nozzle. Manufactured in CS, SS, Alloy, Duplex & Nickel Alloys per ASME B16.9 and international equivalents, our caps offer consistent wall transitions, proper weld end prep, and traceable documentation for global projects in the USA, UK, UAE, Saudi Arabia, Germany, Singapore and more.
We support standard, heavy-wall, and custom geometries with complete document packs and EN 10204 3.1/3.2 MTCs. Project-specific tolerances, special bevels, coatings, and packing can be provided upon request.
🔧 Butt Weld Pipe Caps Product Specifications & Technical Details
Dimensions & Sizes
- NPS: 1/2″ (DN15) to 48″ (DN1200); larger/custom on request
- Schedules: SCH 10, 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS
- Geometry: Hemispherical / Dished styles as per spec/drawing
- Tolerances: Per ASME B16.9; custom per project
Butt Weld Pipe Caps Standards & End Connections
- Dimensional: ASME B16.9 (Butt-weld caps)
- International: DIN / EN, JIS B2311/B2312, ISO 3419 equivalents
- Bevels: ASME B16.25 butt-weld ends (optimized prep)
- NDT: RT/UT, LPT/MPT, PMI, Hydro; QAP/ITP per project
For pressure-retaining closures, specify design pressure/temperature, corrosion allowance, and any special inspection/testing requirements.
🧱 Butt-Weld Pipe Fittings — Grades & International Equivalents
Butt-weld-only grades used for caps. Verify chemistry/mechanical properties against project specs. EN 10204 3.1/3.2 MTCs with full heat traceability available.
| Material Family | Grade / Alloy | UNS | EN / W.Nr. | ASTM / ASME | DIN / ISO / BS / GOST |
|---|---|---|---|---|---|
| Carbon Steel | ASTM A234 WPB | K03006 | — | ASTM A234 WPB / ASME SA234 | DIN 2609; BS 1640; GOST 17375 |
| ASTM A234 WPC | K03506 | — | ASTM A234 WPC / ASME SA234 | — | |
| ASTM A420 WPL6 / WPL3 (LTCS) | K03011 | — | ASTM A420 WPL6/WPL3 / ASME SA420 | DIN 17175; GOST 17375 | |
| Stainless Steel Butt Weld Pipe Caps | ASTM A403 WP304 / 304L / 304H | S30400 / S30403 / S30409 | 1.4301 / 1.4307 | ASTM A403 / ASME SA403 | X5CrNi18-10 |
| ASTM A403 WP316 / 316L / 316Ti | S31600 / S31603 / S31635 | 1.4401 / 1.4404 / 1.4571 | ASTM A403 / ASME SA403 | X2CrNiMo17-12-2 | |
| ASTM A403 WP317 / 317L | S31700 / S31703 | 1.4449 / 1.4438 | ASTM A403 | — | |
| ASTM A403 WP321 / 321H | S32100 / S32109 | 1.4541 / 1.4878 | ASTM A403 | X6CrNiTi18-10 | |
| ASTM A403 WP347 / 347H | S34700 / S34709 | 1.4550 | ASTM A403 | X6CrNiNb18-10 | |
| ASTM A403 WP904L | N08904 | 1.4539 | ASTM A403 | X1NiCrMoCu25-20-5 | |
| Alloy Steel (Cr-Mo) Butt Weld Pipe Caps | ASTM A234 WP1 | — | 1.5415 | ASTM A234 WP1 | 15Mo3 |
| ASTM A234 WP5 | — | 1.7362 | ASTM A234 WP5 | 5CrMo9 | |
| ASTM A234 WP9 | — | 1.7386 | ASTM A234 WP9 | X12CrMo9-1 | |
| ASTM A234 WP11 / WP22 | K11597 / K21590 | 1.7335 / 1.7380 | ASTM A234 | 13CrMo4-5 / 10CrMo9-10 | |
| ASTM A234 WP91 | K91560 | 1.4903 | ASTM A234 WP91 | X10CrMoVNb9-1 | |
| Duplex & Super Duplex | ASTM A815 S31803 / S32205 | S31803 / S32205 | 1.4462 | ASTM A815 / ASME SA815 | X2CrNiMoN22-5-3 |
| ASTM A815 S32750 / S32760 | S32750 / S32760 | 1.4410 / 1.4501 | ASTM A815 / ASME SA815 | X2CrNiMoCuWN25-7-4 | |
| Nickel Alloys Butt Weld Pipe Caps | ASTM B366 Monel 400 | N04400 | 2.4360 | ASTM B366 N04400 | NiCu30Fe |
| ASTM B366 Inconel 600 | N06600 | 2.4816 | ASTM B366 N06600 | NiCr15Fe | |
| ASTM B366 Inconel 625 | N06625 | 2.4856 | ASTM B366 N06625 | NiCr22Mo9Nb | |
| ASTM B366 Incoloy 800 / 825 | N08800 / N08825 | 1.4876 / 2.4858 | ASTM B366 N08800/N08825 | NiCr21Mo | |
| ASTM B366 Hastelloy C-276 | N10276 | 2.4819 | ASTM B366 N10276 | NiMo16Cr15W | |
| ASTM B366 Alloy 20 | N08020 | 2.4660 | ASTM B366 N08020 | NiCr20CuMo |
For sour service, specify NACE MR0175 / ISO 15156 compliance. Matching bolting per ASTM A193/A194 and washers per F436/F436M available.
📦 Product Names by Butt Weld Pipe Caps Grade
- Carbon Steel Caps — ASTM A234 WPB / WPC; LTCS ASTM A420 WPL6 / WPL3
- Stainless Steel Caps — ASTM A403 WP304/L/H, WP316/L/Ti, WP317L, WP321/H, WP347/H, WP904L
- Alloy Steel Caps — ASTM A234 WP1 / WP5 / WP9 / WP11 / WP22 / WP91
- Duplex & Super Duplex Caps — ASTM A815 S31803 / S32205 / S32750 / S32760
- Nickel Alloy Caps — ASTM B366 Monel 400; Inconel 600/625; Incoloy 800/825; Hastelloy C-276; Alloy 20
🧪 Quality Assurance & Certifications
Each cap undergoes multi-stage QC from raw material inspection through forming, heat treatment, machining, and final inspection.
Certificates
EN 10204 3.1/3.2 MTCs; ISO 9001 QMS; NACE MR0175 on request.
Testing
PMI, Hydro, RT/UT, LPT/MPT; hardness, tensile, impact as required.
TPI Options
SGS, BV, TÜV, LR, DNV and others; full QAP/ITP & packing docs.
Dimensional accuracy, weldability, and material integrity are validated per applicable standards for safe, long-term service.
🏗️forButt Weld Pipe Caps Industries We Serve
Oil & Gas
Positive closures on test spools, header ends, maintenance blinds.
Chemical & Petrochem
Process isolation and safe closures in corrosive services.
Power & Energy
Steam lines and condensate headers—Cr-Mo grades.
Marine & Offshore
Seawater systems and deck utilities—DSS/SDSS/Ni alloys.
Water & Desalination
Treatment & distribution terminations with robust sealing.
OEM & EPC
Project docs, TPI, rapid global shipping.
🌍 for Butt Weld Pipe Caps Global Reach & Expertise
Markets We Serve
- Middle East: UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain
- Europe: Germany, UK, Netherlands, France, Italy, Spain
- North America: USA, Canada
- Asia: India, Japan, South Korea, China, Singapore
- SE Asia & Oceania: Malaysia, Indonesia, Thailand, Vietnam, Australia
- Africa & South America: Nigeria, Egypt, South Africa; Brazil, Mexico, Argentina
Butt Weld Pipe Caps Key Applications
- Piping terminations, test spools, isolation for maintenance
- High-pressure/temperature services (Cr-Mo grades)
- Chloride-rich & sour services (Duplex/SDSS/NACE)
- Corrosion-critical media (Nickel Alloys)
Large ready stock and responsive production ensure short lead times for standard and custom end caps.
✅ Why Partner with Dipti Metal?
- Extensive Range: End caps across sizes, schedules, and materials.
- Certified Quality: ASME/ASTM/EN/DIN/JIS compliance with full documentation.
- Competitive Pricing: Value-driven offers for global projects.
- Export Capability: Secure packing, export docs, worldwide delivery.
- Reliable Stockist: Ready-to-ship inventory for urgent needs.
- Custom Fabrication: Heavy-wall, special bevels, coating & marking.
- Customer-Centric: Tech assistance from inquiry to post-delivery.
⭐ Customer Reviews
Refinery QA
“Caps were leak-tight and within tolerance; hydrotest passed at first go.”
Rating: ★★★★★
Fabrication Lead
“Bevels were consistent; welding productivity improved on site.”
Rating: ★★★★☆
Average rating: 4.8/5 (26 reviews).
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