A seamless end cap closes the end of a steel pipe with a welded, pressure-tight seal.
It is butt welded onto the pipe end. Therefore, it suits dead ends, headers and future connection points.
What is a seamless end cap?
Seamless butt weld fittings are carbon steel elbows, tees, reducers, crosses and caps made from seamless pipe. Their ends are bevelled, so a welder joins them edge to edge with the pipe.
Schedule 40 fittings match schedule 40 pipe wall. Because the weld is as strong as the pipe, butt weld fittings suit steam, high pressure and high temperature lines. Dimensions follow ASME B16.9.
Further reading
- Carbon steel explained (Wikipedia)
- Butt welding of pipes and fittings (Wikipedia)
- Nominal pipe size and schedules (Wikipedia)
Key terms explained
- Nominal pipe size (NPS)
- The trade size of a pipe, such as 1 inch. Each NPS has a fixed outside diameter.
- Schedule
- A number that sets wall thickness for a pipe size. Schedule 40 is the common standard wall.
- Carbon steel
- Steel whose main alloying element is carbon. It is strong and weldable but needs protection from rust.
- Butt weld
- A weld that joins two pipe or fitting ends edge to edge.
Features and benefits
- Seamless carbon steel body.
- Bevelled ends for butt welding.
- Schedule 40 wall to match pipe.
- Smooth bore for low flow loss.
- Handles high pressure and temperature.
Technical specifications
| Product | Seamless end cap |
|---|---|
| Material | Carbon steel, seamless |
| Ends | Butt weld |
| Sizes | State size and schedule when you request a quote |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
| Supplier | Sparks Plumbing Experts Ltd, Nairobi |
Sizes, grades and ratings depend on stock and model. Tell us what you need, and we will confirm before you order.
Applications of a seamless end cap
- Steam lines. Joins steam mains and branches.
- Boiler rooms. Connects feed, blowdown and header pipework.
- Oil and fuel lines. Joins diesel and fuel oil lines.
- Compressed air mains. Builds plant air distribution.
- Fire mains. Joins steel fire water pipework where specified.
- Process plants. Joins process water and utility lines.
- Pump stations. Connects steel pump pipework.
- Cooling water. Joins chilled and cooling water lines.
- Structural frames. Joins pipe in rails and frames.
- Repairs. Replaces worn fittings.
How to choose and install
- Match size and schedule to the pipe.
- Use qualified welders and correct procedures.
- Choose eccentric reducers on pump suction to avoid air pockets.
- Paint or insulate after welding.
Why choose Sparks Plumbing Experts
- Every common pipe materialGI, PPR, PVC, HDPE, brass and stainless fittings are all stocked, so you can match any existing system.
- Common sizes in stockMost fitting types come in several sizes, from small domestic sizes up to larger mains sizes.
- Pipes, fittings and valves togetherPipes, fittings, valves, clamps and jointing products come in one order.
- Help with thread and size standardsWe help you confirm inch and millimetre sizes before you buy, which avoids return trips.
- Visit or collect in NairobiOur store is at KCB Building, Enterprise Road, in the Industrial Area, so you can see parts before you buy or collect your order.
- Quotes your wayAsk for prices by phone, WhatsApp, email or the online quote form, whichever suits you on site.
- Over 1,600 products in one placeOur catalogue covers 55 categories, so one supplier can handle most of your parts list.
- Help choosing the right partSend a nameplate photo, a drawing or the old part, and we help you match size and specification.
- Single items or project quantitiesWe price a single replacement part just as readily as a full site order.
- Supply across East AfricaWe serve customers across Kenya. We also supply buyers in Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan.
Related products and accessories
Browse more: Steel & Stainless Steel Pipes & Fittings · Flanges · Valves · Boiler Accessories.
Ordering from Sparks Plumbing Experts
We supply customers across Kenya. We also serve buyers in Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan. You can collect from our store at KCB Building, Enterprise Road, Nairobi, or ask us about delivery to your site. Send your quantities and specifications, and we will reply with prices and availability.
Request a Quote WhatsApp 0726 086 895
Frequently asked questions
Where is a seamless end cap used?
On dead ends, header ends and drip legs in steel pipework.
What details do you need to quote seamless butt weld fittings?
Tell us the size, the material grade, the schedule or pressure class and the quantity. A photo of the old part, a nameplate or a drawing also helps. Then call or WhatsApp 0726 086 895, or use the quote form on this page.
Do you deliver seamless butt weld fittings outside Nairobi?
Yes. We supply customers across Kenya. We also serve buyers in Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan. Delivery or courier arrangements are agreed when you confirm the order.
How much does a seamless butt weld fitting cost in Kenya?
The price depends on the size, the grade, the schedule and the quantity. Therefore, send your list with a quote request and we will reply with current figures.
Do you supply mill test certificates for seamless butt weld fittings?
Ask us when you request a quote. We will tell you what documentation is available for the stock you order.
Can seamless butt weld fittings carry steam?
Steel suits steam when the grade, schedule and rating match the steam pressure and temperature. Confirm your conditions with us.
Do butt weld fittings need a qualified welder?
Use a qualified welder for pressure and steam lines, and follow the project welding procedure.
Can butt weld fittings be used on water lines?
Yes, with suitable coating. They are common on fire and pump mains.
Do I need to bevel the pipe?
Yes. The pipe end is bevelled to match the fitting before welding.
Where can I buy seamless end cap in Kenya?
Buy it from Sparks Plumbing Experts Ltd at KCB Building, Enterprise Road, Industrial Area, Nairobi. We are open Monday to Friday, 8 am to 5 pm, and Saturday, 9 am to 12 noon. You can also order by phone or WhatsApp on 0726 086 895. We deliver across Kenya and to Uganda, Tanzania, Zanzibar, Rwanda, Burundi, DR Congo, Ethiopia and South Sudan.
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