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Stainless Steel 201 Male Thread Weld Nipple BSP 100–500mm Pipe Fitting
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Stainless Steel 201 Male Thread Weld Nipple BSP 100–500mm Pipe Fitting
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Stainless Steel 201 Male Thread Weld Nipple BSP 100–500mm Pipe FittingStainless Steel Male Thread Weld Nipple Reliable BSP Pipe Extension for Plumbing & Industrial Use When you need to extend a pipe run, connect a valve to a vessel wall, or bridge a gap in a tight plumbing layout, a poorly fitted nipple can mean leaks, rework, and downtime. These stainless steel 201 BSP male thread weld nipples are built for plumbers, pipefitters, fabricators, and DIY enthusiasts who need a dependable, weldable pipe extension in a range
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Stainless Steel Male Thread Weld Nipple — Reliable BSP Pipe Extension for Plumbing & Industrial Use
When you need to extend a pipe run, connect a valve to a vessel wall, or bridge a gap in a tight plumbing layout, a poorly fitted nipple can mean leaks, rework, and downtime. These stainless steel 201 BSP male thread weld nipples are built for plumbers, pipefitters, fabricators, and DIY enthusiasts who need a dependable, weldable pipe extension in a range of lengths.
Each piece is a single weld nipple machined from stainless steel 201 with a BSP male thread on one end and a plain weld end on the other. Available in three thread diameters — 1/2" (M1&2"), 3/4" (M3&4"), and 1" (M1") — and six lengths: 100mm (≈3.9"), 150mm (≈5.9"), 200mm (≈7.9"), 300mm (≈11.8"), 400mm (≈15.7"), and 500mm (≈19.7").
These weld nipples are well-suited for residential and commercial plumbing pipe extensions, industrial tank outlet connections, and custom fabrication projects where a threaded-to-welded transition is needed. The BSP male thread end connects directly to standard female BSP valves, elbows, and couplings, making integration into existing systems straightforward.
Compatibility: BSP (British Standard Pipe) male thread — fits standard BSP female threaded fittings, valves, and couplings. Thread sizes: 1/2", 3/4", 1". Weld end suits standard pipe OD for the corresponding nominal size.
✅ Key Features of These Stainless Steel Male Thread Weld Nipples
- BSP Male Thread One End — Standard BSP male thread connects directly to female BSP valves, couplings, and elbows without adapters, simplifying stainless steel pipe fitting installations.
- Weldable Plain End — The opposite end is left plain for butt welding directly into pipe runs or vessel walls, creating a permanent, leak-resistant joint in fabrication and industrial piping projects.
- Six Length Options — Choose from 100mm to 500mm to match your exact pipe extension requirement, reducing the need for additional couplings or filler pieces in custom plumbing layouts.
- Stainless Steel 201 Construction — Offers solid corrosion resistance for general indoor and outdoor plumbing environments, with good strength for moderate-pressure pipe systems.
- Three Thread Diameters — Available in 1/2", 3/4", and 1" BSP to match the most common nominal pipe sizes used in residential plumbing and light industrial piping systems.
- Fabrication-Ready Finish — Smooth machined surface on the threaded section and clean weld-end cut make these nipples ready for immediate use in pipe fabrication, tank connections, and custom stainless steel pipework.
📐 Technical Specifications — Stainless Steel BSP Male Thread Weld Nipple
| Material | Stainless Steel 201 |
|---|---|
| Thread Type | BSP (British Standard Pipe) Male |
| Thread Sizes | 1/2" (M1&2"), 3/4" (M3&4"), 1" (M1") |
| Available Lengths | 100mm (≈3.9"), 150mm (≈5.9"), 200mm (≈7.9"), 300mm (≈11.8"), 400mm (≈15.7"), 500mm (≈19.7") |
| End Type | One BSP male threaded end + one plain weld end |
| Finish | Mill / machined stainless |
| Wall Thickness | See variant options |
| Pressure Rating | Contact us to confirm |
| Quantity per Order | 1 piece per variant |
| Application | Plumbing, industrial piping, tank connections, custom fabrication |
Note: Thread size refers to nominal BSP pipe size, not the actual outer diameter of the thread. Verify your existing fitting's BSP thread size before ordering. For high-pressure or food-grade applications, please contact us to confirm suitability.
❓ Frequently Asked Questions
How do I choose the right length for a weld nipple?
Measure the gap between the two pipe ends or fittings you need to bridge. Add allowance for thread engagement on each end — generally 10–15mm per side. Available lengths are 100mm (≈3.9"), 150mm (≈5.9"), 200mm (≈7.9"), 300mm (≈11.8"), 400mm (≈15.7"), and 500mm (≈19.7"). When in doubt, size up — a longer nipple can be trimmed during fabrication.
What thread standard do these weld nipples use?
These fittings use BSP (British Standard Pipe) male threads, which are compatible with standard BSP female threaded fittings and valves commonly used in plumbing and industrial piping systems across the US, UK, Australia, and many other markets.
Can these weld nipples be used outdoors or in wet environments?
Yes. Stainless steel 201 offers good corrosion resistance for general outdoor and wet-environment use. For highly corrosive environments — such as coastal saltwater exposure or chemical processing — 304 or 316 stainless steel is generally recommended. Contact us if you need an upgraded grade.
What is the pressure rating of these pipe nipples?
Pressure ratings depend on pipe diameter, wall thickness, and installation method. Stainless steel 201 weld nipples are typically suitable for moderate-pressure plumbing and industrial applications. Contact us to confirm ratings for your specific use case before installation in high-pressure systems.
What sizes are available and how do I read the variant options?
Variants are listed as Thread Size × Length. For example, "M1&2" × 100mm" means a 1/2" BSP male thread nipple that is 100mm (≈3.9") long. Available thread sizes are 1/2", 3/4", and 1"; available lengths are 100mm, 150mm, 200mm, 300mm, 400mm, and 500mm.
How is a weld nipple installed?
The plain end is welded directly into a pipe or vessel wall using standard TIG or MIG welding suitable for stainless steel. The male-threaded end then accepts a BSP female fitting such as a valve, elbow, or coupling. Apply PTFE tape or pipe thread sealant to the threaded connection to ensure a leak-free joint.
Is stainless steel 201 suitable for drinking water or food-grade applications?
Stainless steel 201 is generally used in industrial and structural applications. For potable water or food-grade systems, 304 or 316 stainless steel is typically the recommended choice. Please confirm your application requirements before ordering, or contact us for alternative material options.
🛒 Select your size and length above, then add to cart — ships from our US warehouse.
Stainless Steel 201 Male Thread Weld Nipple BSP 100–500mm Pipe Fitting
Item no
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69603740409
US$ 31.95
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