{"product_id":"stainless-steel-201-male-thread-weld-nipple","title":"Stainless Steel 201 Male Thread Weld Nipple 1\/2\" 3\/4\" 1\" | 100–500mm Pipe Fitting","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003ch2\u003eStainless Steel Male Thread Weld Nipple — Reliable Pipe Extension for Plumbing \u0026amp; Industrial Use\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003cp\u003eWhen 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.\u003c\/p\u003e\n\u003cp\u003eEach 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.\u003c\/p\u003e\n\u003cp\u003eTypical 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e 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.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Stainless Steel Male Thread Weld Nipples\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMale Thread + Weld End Design\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSix Length Options (100–500mm)\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eGrade 201 Stainless Steel Construction\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eThree Nominal Pipe Sizes\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFabrication \u0026amp; Repair Ready\u003c\/strong\u003e — 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.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🚚\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eShips from US Warehouse\u003c\/strong\u003e — In-stock inventory means faster delivery to your job site or workshop, with no long international lead times on standard sizes.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Stainless Steel Male Thread Weld Nipple\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless Steel Grade 201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFitting Type\u003c\/th\u003e\n\u003ctd\u003eMale Thread Weld Nipple (one threaded end, one plain weld end)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe) male thread — contact us to confirm NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Thread Sizes\u003c\/th\u003e\n\u003ctd\u003e1\/2\" (DN15), 3\/4\" (DN20), 1\" (DN25)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e100mm (≈3.9\"), 150mm (≈5.9\"), 200mm (≈7.9\"), 300mm (≈11.8\"), 400mm (≈15.7\"), 500mm (≈19.7\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall Thickness\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eMill finish \/ brushed stainless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWorking Pressure\u003c\/th\u003e\n\u003ctd\u003eTypically 150–300 PSI (water\/gas at ambient temp) — verify for your application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual piece (1 pc per order)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuitable Applications\u003c\/th\u003e\n\u003ctd\u003eWater supply, gas lines, compressed air, light industrial piping, food-service fabrication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right length for a weld nipple?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard do these weld nipples use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Stainless Steel 201 suitable for outdoor or corrosive environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSS 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these nipples be welded and threaded at the same time?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pressure or load rating of these fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePressure 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich size should I choose — 1\/2\", 3\/4\", or 1\"?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need thread sealant when installing these nipples?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003esize and length\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"M1\u00262\" x 100mm","offer_id":52336640459026,"sku":"QMGLBZSJ024225x1","price":4.16,"currency_code":"USD","in_stock":true},{"title":"M1\u00262\" x 150mm","offer_id":52336640491794,"sku":"QMGLBZSJ024226x1","price":6.15,"currency_code":"USD","in_stock":true},{"title":"M1\u00262\" x 200mm","offer_id":52336640524562,"sku":"QMGLBZSJ024227x1","price":8.05,"currency_code":"USD","in_stock":true},{"title":"M1\u00262\" x 300mm","offer_id":52336640557330,"sku":"QMGLBZSJ024228x1","price":11.89,"currency_code":"USD","in_stock":true},{"title":"M1\u00262\" x 400mm","offer_id":52336640590098,"sku":"QMGLBZSJ024229x1","price":15.67,"currency_code":"USD","in_stock":true},{"title":"M1\u00262\" x 500mm","offer_id":52336640622866,"sku":"QMGLBZSJ024230x1","price":19.23,"currency_code":"USD","in_stock":true},{"title":"M3\u00264\" x 100mm","offer_id":52336640655634,"sku":"QMGLBZSJ024231x1","price":5.29,"currency_code":"USD","in_stock":true},{"title":"M3\u00264\" x 150mm","offer_id":52336640688402,"sku":"QMGLBZSJ024232x1","price":7.72,"currency_code":"USD","in_stock":true},{"title":"M3\u00264\" x 200mm","offer_id":52336640721170,"sku":"QMGLBZSJ024233x1","price":14.69,"currency_code":"USD","in_stock":true},{"title":"M3\u00264\" x 300mm","offer_id":52336640753938,"sku":"QMGLBZSJ024234x1","price":16.1,"currency_code":"USD","in_stock":true},{"title":"M3\u00264\" x 400mm","offer_id":52336640786706,"sku":"QMGLBZSJ024235x1","price":21.46,"currency_code":"USD","in_stock":true},{"title":"M3\u00264\" x 500mm","offer_id":52336640819474,"sku":"QMGLBZSJ024236x1","price":25.89,"currency_code":"USD","in_stock":true},{"title":"M1\" x 100mm","offer_id":52336640852242,"sku":"QMGLBZSJ024237x1","price":6.91,"currency_code":"USD","in_stock":true},{"title":"M1\" x 150mm","offer_id":52336640885010,"sku":"QMGLBZSJ024238x1","price":9.94,"currency_code":"USD","in_stock":true},{"title":"M1\" x 200mm","offer_id":52336640917778,"sku":"QMGLBZSJ024239x1","price":13.72,"currency_code":"USD","in_stock":true},{"title":"M1\" x 300mm","offer_id":52336640950546,"sku":"QMGLBZSJ024240x1","price":17.61,"currency_code":"USD","in_stock":true},{"title":"M1\" x 400mm","offer_id":52336640983314,"sku":"QMGLBZSJ024241x1","price":27.77,"currency_code":"USD","in_stock":true},{"title":"M1\" x 500mm","offer_id":52336641016082,"sku":"QMGLBZSJ024242x1","price":35.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of24_3c6693c6-9eeb-493a-a505-57a1ae4a7180.jpg?v=1781076014","url":"https:\/\/homediyer.com\/de\/products\/stainless-steel-201-male-thread-weld-nipple","provider":"HomeDIYer","version":"1.0","type":"link"}