{"product_id":"304-stainless-steel-weld-nipple-bsp-screwed-pipe-fitting","title":"304 Stainless Steel Weld Nipple BSP Screwed Pipe Fitting | 1\/4\" to 4\" (DN8–DN100)","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e304 Stainless Steel Weld Nipple BSP Screwed Pipe Fitting — Reliable Connections for Tanks, Vessels \u0026amp; Pipework\u003c\/h2\u003e\n\u003cp\u003eWhen a leaking tank fitting or a corroded pipe nipple brings your project to a halt, you need a replacement that installs cleanly and holds up long-term. These 304 stainless steel weld nipple BSP screwed pipe fittings are built for fabricators, plumbers, and DIY builders who need a dependable threaded connection point on tanks, pressure vessels, or pipe runs — without the guesswork of mismatched threads or substandard material.\u003c\/p\u003e\n\u003cp\u003eEach fitting is a 100mm (≈3.94\") weld nipple machined from 304 stainless steel, with a plain weld end and male BSP (British Standard Pipe) threads on the opposite end. Available in 11 BSP sizes from 1\/4\" (DN8) through 4\" (DN100), covering the full range of common pipe bore sizes. Sold individually (1 pcs per order) so you can order exactly what your job requires.\u003c\/p\u003e\n\u003cp\u003eTypical applications include tank outlet fittings for water storage and chemical vessels, inline connections on stainless steel process pipework, and threaded nozzle points on fabricated enclosures — making these a go-to choice for anyone searching for a BSP weld nipple stainless steel fitting, a tank outlet nipple, or a screwed pipe fitting for food-grade or industrial use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e \u003cstrong\u003eThread Standard:\u003c\/strong\u003e BSP (British Standard Pipe) — 55° thread angle. Not compatible with NPT (60°) fittings. Confirm your system uses BSP threads before ordering.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These 304 Stainless Steel BSP Weld Nipple Fittings\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFull BSP Size Range\u003c\/strong\u003e — Available from BSP 1\/4\" (DN8) to BSP 4\" (DN100), covering the most common nominal bore sizes for residential, commercial, and light industrial pipe systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e304 Stainless Steel Construction\u003c\/strong\u003e — Resists rust, oxidation, and mild chemical exposure, making these weld nipples suitable for water, air, steam, and food-contact applications where carbon steel would corrode.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e100mm Fixed Length\u003c\/strong\u003e — The 100mm (≈3.94\") tube length provides enough weld engagement and thread projection for most tank wall thicknesses and pipe flange installations without excessive protrusion.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWeld-Ready Plain End\u003c\/strong\u003e — The plain (un-threaded) end is machined for clean TIG or MIG welding to stainless steel tanks, vessels, or pipe spools, reducing prep time on fabrication jobs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMale BSP Threaded Outlet\u003c\/strong\u003e — The threaded end accepts standard BSP female fittings, valves, and gauges, giving you a secure, leak-resistant connection point without additional adapters in most BSP plumbing systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🏭\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eVersatile Across Industries\u003c\/strong\u003e — Used in water treatment, food processing, HVAC, marine fabrication, and general plumbing — anywhere a stainless screwed pipe fitting with a weld-in design is specified.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — 304 Stainless Steel BSP Weld Nipple\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eWeld Nipple — BSP Screwed Pipe Fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e304 Stainless Steel (1.4301)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSP (British Standard Pipe) — parallel or taper; see variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Sizes\u003c\/th\u003e\n\u003ctd\u003eBSP 1\/4\" (DN8), 3\/8\" (DN10), 1\/2\" (DN15), 3\/4\" (DN20), 1\" (DN25), 1-1\/4\" (DN32), 1-1\/2\" (DN40), 2\" (DN50), 2-1\/2\" (DN65), 3\" (DN80), 4\" (DN100)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Length\u003c\/th\u003e\n\u003ctd\u003e100mm (≈3.94\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnd Configuration\u003c\/th\u003e\n\u003ctd\u003eOne plain weld end \/ One male BSP threaded end\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eMill \/ brushed stainless (natural)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall Thickness\u003c\/th\u003e\n\u003ctd\u003eSee variant options (varies by nominal bore)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options (varies by BSP size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePressure Rating\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm (depends on wall thickness and weld quality)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuitable Media\u003c\/th\u003e\n\u003ctd\u003eWater, air, steam, mild chemicals, food-contact (confirm for specific media)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU Prefix\u003c\/th\u003e\n\u003ctd\u003ePENG0266xx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eSizing note:\u003c\/strong\u003e BSP nominal sizes refer to bore diameter, not the actual outer diameter of the tube. Always verify the OD and thread dimensions against your mating fitting before installation.\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 BSP weld nipple size?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMatch the BSP thread size to your existing pipe or fitting. BSP sizes refer to the nominal bore, not the actual outer diameter. For example, a BSP 1\/2\" (DN15) nipple has an OD of approximately 21.3mm (≈0.84\"). Always measure your mating fitting's thread or bore before ordering. If in doubt, select the next size up and use a reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the pressure rating of these weld nipples?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 stainless steel weld nipples generally handle working pressures up to 150 PSI for standard schedule pipe applications, though actual ratings depend on wall thickness, weld quality, and operating temperature. For high-pressure systems, contact us to confirm suitability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these fittings be used outdoors or in wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. 304 stainless steel offers good corrosion resistance in most outdoor and wet environments. For marine or high-chloride environments, 316 stainless steel is typically recommended. These fittings are suitable for water, air, and mild chemical service in most outdoor installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these BSP or NPT thread fittings?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese are BSP (British Standard Pipe) threaded fittings. BSP and NPT threads are \u003cstrong\u003enot\u003c\/strong\u003e directly interchangeable — BSP uses a 55° thread angle while NPT uses 60°. Always confirm your system uses BSP threads before ordering. If you need NPT, contact us about availability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is a weld nipple and how is it installed?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA weld nipple is a short length of pipe with male BSP threads on one end and a plain (un-threaded) weld end on the other. Installation involves welding the plain end into a hole in your tank, vessel, or pipe spool, then connecting your valve, gauge, or fitting to the BSP threaded end. TIG welding is typically recommended for stainless steel to maintain corrosion resistance at the weld zone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat sizes are available and what do DN8–DN100 mean?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eAvailable sizes range from BSP 1\/4\" (DN8) to BSP 4\" (DN100). DN (Diamètre Nominal \/ Nominal Diameter) is the metric designation for pipe bore size. DN8 = BSP 1\/4\", DN15 = BSP 1\/2\", DN25 = BSP 1\", DN50 = BSP 2\", and DN100 = BSP 4\". Select your size from the variant dropdown above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the 100mm length the overall length of the fitting?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes — 100mm (≈3.94\") is the overall tube length from the weld end face to the tip of the threaded end. This length is generally sufficient for most tank wall thicknesses and standard flange installations. Confirm this suits your installation depth before ordering.\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\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"BSP 1\u00264\" (DN8) \/ 1 pcs","offer_id":52336635314450,"sku":"PENG026625x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"BSP 3\u00268\" (DN10) \/ 1 pcs","offer_id":52336635347218,"sku":"PENG026626x1","price":4.28,"currency_code":"USD","in_stock":true},{"title":"BSP 1\u00262\" (DN15) \/ 1 pcs","offer_id":52336635379986,"sku":"PENG026627x1","price":5.15,"currency_code":"USD","in_stock":true},{"title":"BSP 3\u00264\" (DN20) \/ 1 pcs","offer_id":52336635412754,"sku":"PENG026628x1","price":5.83,"currency_code":"USD","in_stock":true},{"title":"BSP 1\" (DN25) \/ 1 pcs","offer_id":52336635445522,"sku":"PENG026629x1","price":8.42,"currency_code":"USD","in_stock":true},{"title":"BSP 1 1\u00264\" (DN32) \/ 1 pcs","offer_id":52336635478290,"sku":"PENG026630x1","price":11.08,"currency_code":"USD","in_stock":true},{"title":"BSP 1 1\u00262\" (DN40) \/ 1 pcs","offer_id":52336635511058,"sku":"PENG026631x1","price":12.09,"currency_code":"USD","in_stock":true},{"title":"BSP 2\" (DN50) \/ 1 pcs","offer_id":52336635543826,"sku":"PENG026632x1","price":15.71,"currency_code":"USD","in_stock":true},{"title":"BSP 2 1\u00262\" (DN65) \/ 1 pcs","offer_id":52336635576594,"sku":"PENG026633x1","price":18.29,"currency_code":"USD","in_stock":true},{"title":"BSP 3\" (DN80) \/ 1 pcs","offer_id":52336635609362,"sku":"PENG026634x1","price":25.15,"currency_code":"USD","in_stock":true},{"title":"BSP 4\" (DN100) \/ 1 pcs","offer_id":52336635642130,"sku":"PENG026635x1","price":31.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of11_d48c0b7a-ae0e-4747-a85a-64c3eca79dca.jpg?v=1781075253","url":"https:\/\/homediyer.com\/de\/products\/304-stainless-steel-weld-nipple-bsp-screwed-pipe-fitting","provider":"HomeDIYer","version":"1.0","type":"link"}