Stainless Steel 201 Male Thread Weld Nipple 1/2" 3/4" 1" | 100–500mm Pipe Fitting

Roll over image to zoom in Click on image to zoom

Stainless Steel 201 Male Thread Weld Nipple 1/2" 3/4" 1" | 100–500mm Pipe Fitting

Name: Stainless Steel 201 Male Thread Weld Nipple 1/2" 3/4" 1" | 100–500mm Pipe Fitting
Brand: HomeDIYer
Price: 4.16 USD
Availability: InStock

HomeDIYer

No reviews

By HomeDIYer®

Size: M1&2" x 100mm

Price:

$4.16 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

Share this product

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Quantity Discount Promotion

DIY Expert Support

Get fitment advice & recommendations

Mon-Fri, 8:30AM-8PM

WhatsApp Email

⚡

24-Hour Fast Ship

🚚

Arrives in 3-14 days

🌍

Global Reach

↩️

30-Day Returns

🌱 1 tree planted with every purchase

Stainless Steel Male Thread Weld Nipple — Reliable Pipe Extension for Plumbing & Industrial Use

When a standard pipe run falls short — whether you're extending a water line, fabricating a custom gas manifold, or repairing an industrial system — a poorly fitted nipple can mean leaks, rework, and downtime. These stainless steel 201 male thread weld nipples give plumbers, fabricators, and DIY homeowners a dependable solution that threads in cleanly and welds securely on the other end.

Each nipple is machined from Grade 201 stainless steel with a male-threaded end (BSP, typically 1/2", 3/4", or 1") and a plain weld end. Available lengths run from 100mm (≈3.9") to 500mm (≈19.7") — specifically 100mm, 150mm (≈5.9"), 200mm (≈7.9"), 300mm (≈11.8"), 400mm (≈15.7"), and 500mm — so you can bridge almost any gap without cutting or coupling. Sold individually; select your size and length from the variant options above.

Typical use cases include extending residential water supply lines behind walls, connecting valves and gauges in compressed-air systems, and custom stainless steel pipe fabrication for food-service or light industrial environments where a male thread to weld nipple fitting is required.

🔗 Compatibility: Designed for standard BSP male thread pipe systems. Fits most BSP female fittings, valves, and couplings in 1/2", 3/4", and 1" nominal pipe sizes. Contact us to confirm NPT compatibility before ordering.

✅ Key Features of These Stainless Steel Male Thread Weld Nipples

🔩Male Thread + Weld End Design — One end is precision-threaded for easy connection to BSP female fittings; the opposite plain end is ready to weld directly into pipe, tanks, or vessels for a permanent, leak-free joint.
📏Six Length Options (100–500mm) — Choose from 100mm (≈3.9"), 150mm (≈5.9"), 200mm (≈7.9"), 300mm (≈11.8"), 400mm (≈15.7"), or 500mm (≈19.7") to match your exact pipe extension requirement without unnecessary cutting or coupling.
🛡️Grade 201 Stainless Steel Construction — SS 201 provides solid corrosion resistance for indoor plumbing, light outdoor, and general industrial applications, with a smooth surface finish that resists scale buildup over time.
⚙️Three Nominal Pipe Sizes — Available in 1/2" (DN15), 3/4" (DN20), and 1" (DN25) to cover the most common residential and commercial pipe thread weld nipple sizes used in water, gas, and compressed-air systems.
🏭Fabrication & Repair Ready — The weld-end design makes these nipples a go-to choice for custom stainless steel pipe fabrication, tank connections, and field repairs where a standard threaded-both-ends nipple won't work.
🚚Ships from US Warehouse — In-stock inventory means faster delivery to your job site or workshop, with no long international lead times on standard sizes.

📐 Technical Specifications — Stainless Steel Male Thread Weld Nipple

Material	Stainless Steel Grade 201
Fitting Type	Male Thread Weld Nipple (one threaded end, one plain weld end)
Thread Standard	BSP (British Standard Pipe) male thread — contact us to confirm NPT
Available Thread Sizes	1/2" (DN15), 3/4" (DN20), 1" (DN25)
Available Lengths	100mm (≈3.9"), 150mm (≈5.9"), 200mm (≈7.9"), 300mm (≈11.8"), 400mm (≈15.7"), 500mm (≈19.7")
Wall Thickness	See variant options
Outer Diameter	See variant options
Surface Finish	Mill finish / brushed stainless
Working Pressure	Typically 150–300 PSI (water/gas at ambient temp) — verify for your application
Sold As	Individual piece (1 pc per order)
Suitable Applications	Water supply, gas lines, compressed air, light industrial piping, food-service fabrication
Country of Origin	Contact us to confirm

❓ 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 — typically 10–15mm per end. 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; a short one cannot.

What thread standard do these weld nipples use?

These nipples generally use BSP (British Standard Pipe) male threads, compatible with most standard pipe fittings used in plumbing, gas, and industrial systems. If you require NPT (National Pipe Thread) compatibility, please contact us to confirm before ordering.

Is Stainless Steel 201 suitable for outdoor or corrosive environments?

SS 201 offers good corrosion resistance for general indoor and light outdoor use. It performs well in dry or mildly humid environments. For highly corrosive settings — such as marine, coastal, or chemical exposure — SS 304 or SS 316 is typically recommended instead.

Can these nipples be welded and threaded at the same time?

Yes. Weld nipples are designed with a plain (weld) end on one side and a male threaded end on the other, allowing you to weld one end into a pipe or vessel while threading the other end into a fitting or valve. This makes them ideal for custom fabrication and repair work where a permanent connection is needed on one side.

What is the pressure or load rating of these fittings?

Pressure ratings depend on pipe diameter, wall thickness, and the application. For SS 201 pipe nipples in standard wall thickness, working pressure is generally in the range of 150–300 PSI for water and gas at ambient temperatures. Always verify with your system engineer for critical or high-pressure applications.

Which size should I choose — 1/2", 3/4", or 1"?

Match the nipple size to your existing pipe or fitting thread size. 1/2" (DN15) is common for household water lines and small gas lines. 3/4" (DN20) suits medium-flow water and compressed-air systems. 1" (DN25) is typically used for higher-flow plumbing, industrial piping, and irrigation mains.

Do I need thread sealant when installing these nipples?

Yes. For threaded connections, applying PTFE tape or pipe thread sealant compound is generally recommended to ensure a leak-free seal. Wrap PTFE tape clockwise around the male threads (2–3 layers) before threading into the female fitting.

🛒 Select your size and length above, then add to cart — ships from our US warehouse.

Stainless Steel 201 Male Thread Weld Nipple 1/2" 3/4" 1" | 100–500mm Pipe Fitting

Payment & Security

Let customers speak for us

DIY Expert Support

Description

Stainless Steel Male Thread Weld Nipple — Reliable Pipe Extension for Plumbing & Industrial Use

✅ Key Features of These Stainless Steel Male Thread Weld Nipples

📐 Technical Specifications — Stainless Steel Male Thread Weld Nipple

❓ Frequently Asked Questions

Stainless Steel 201 Male Thread Weld Nipple 1/2" 3/4" 1" | 100–500mm Pipe Fitting

You may also like

Recently viewed