{"id":25516,"date":"2025-04-08T11:55:26","date_gmt":"2025-04-08T06:25:26","guid":{"rendered":"https:\/\/conexmetals.com\/product\/stainless-steel-square-head-plugs-stainless-steel-threaded-pipe-plugs\/"},"modified":"2025-04-08T11:55:26","modified_gmt":"2025-04-08T06:25:26","slug":"stainless-steel-square-head-plugs-stainless-steel-threaded-pipe-plugs","status":"publish","type":"product","link":"https:\/\/conexmetals.com\/ru\/\u043f\u0440\u043e\u0434\u0443\u043a\u0442\/stainless-steel-square-head-plugs-stainless-steel-threaded-pipe-plugs\/","title":{"rendered":"Stainless Steel Square Head Plugs | Stainless Steel Threaded Pipe Plugs"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<h2 data-pm-slice=\"1 1 []\"><img decoding=\"async\" class=\"size-medium wp-image-14586 alignright\" src=\"https:\/\/conexmetals.com\/wp-content\/uploads\/2025\/04\/Stainless-steel-plugs-male-threaded-SS-plug-300x165.webp\" alt=\"Stainless steel plugs male threaded SS plug line drawing\" width=\"300\" height=\"165\" srcset=\"https:\/\/conexmetals.com\/wp-content\/uploads\/2025\/04\/Stainless-steel-plugs-male-threaded-SS-plug-300x165.webp 300w, https:\/\/conexmetals.com\/wp-content\/uploads\/2025\/04\/Stainless-steel-plugs-male-threaded-SS-plug-768x422.webp 768w, https:\/\/conexmetals.com\/wp-content\/uploads\/2025\/04\/Stainless-steel-plugs-male-threaded-SS-plug-700x385.webp 700w, https:\/\/conexmetals.com\/wp-content\/uploads\/2025\/04\/Stainless-steel-plugs-male-threaded-SS-plug.webp 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>High Quality Stainless Steel Plugs, NPT Plugs BSP Stainless Steel Plugs 316 Stainless Steel Plugs form India!<\/h2>\n<p>We are one of the leading manufacturers and exporters of\u00a0<strong>Stainless Steel Square Head Plugs and Threaded Pipe Plugs<\/strong>\u00a0from\u00a0<strong>India<\/strong>. We have been supplying\u00a0<strong>precision threaded pipe closure solutions<\/strong>\u00a0to the world market for many decades. Designed to withstand pressure, temperature, and corrosion challenges in demanding environments, our plugs are available in multiple threading standards and production variants. With a global reputation for quality and consistency, our factory delivers bulk and customized solutions to OEMs, plumbing system integrators, petrochemical companies, and distributors worldwide. Our strength lies in producing high-integrity parts using a combination of investment casting, CNC turning, and hot forging, supported by full in-house testing and export-ready logistics.<\/p>\n<p><strong>Overview<\/strong><\/p>\n<p>Our\u00a0<strong>Stainless Steel pipe plugs, NPT plugs, BSP plugs, Stainless Steel 316 Plugs, Stainless Steel threaded pipe plugs<\/strong>\u00a0are used to securely seal off the ends of pipe systems or outlets in valves and equipment. The most popular style is the\u00a0<strong>square head plug<\/strong>, allowing easy installation or removal using a wrench. These are commonly manufactured via\u00a0<strong>investment casting<\/strong>,\u00a0<strong>hot stamping<\/strong>, or\u00a0<strong>CNC turning from solid bar<\/strong>\u00a0depending on the size, volume, and strength requirements. Threading standards include\u00a0<strong>NPT<\/strong>,\u00a0<strong>BSP<\/strong>,\u00a0<strong>BSPT<\/strong>, and\u00a0<strong>NPSM<\/strong>, conforming to major international piping norms.<\/p>\n<p><strong>Material Grades and Properties<\/strong><\/p>\n<p>We offer plugs in the following Stainless Steel grades:<\/p>\n<table>\n<tbody>\n<tr>\n<th>Grade<\/th>\n<th>Standard Equivalent<\/th>\n<th>Properties<\/th>\n<\/tr>\n<tr>\n<td>SS 304<\/td>\n<td>ASTM A351 CF8, JIS SUS304<\/td>\n<td>General corrosion resistance, good weldability<\/td>\n<\/tr>\n<tr>\n<td>SS 316<\/td>\n<td>ASTM A351 CF8M, JIS SUS316<\/td>\n<td>Superior resistance to chlorides and acidic environments<\/td>\n<\/tr>\n<tr>\n<td>SS 304L<\/td>\n<td>ASTM A351 CF3<\/td>\n<td>Low carbon for better corrosion resistance post-welding<\/td>\n<\/tr>\n<tr>\n<td>SS 316L<\/td>\n<td>ASTM A351 CF3M<\/td>\n<td>Low carbon, ideal for food and pharmaceutical applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Mechanical Properties of SS 316 (Typical)<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td>Property<\/td>\n<td>Value<\/td>\n<\/tr>\n<tr>\n<td>Tensile Strength<\/td>\n<td>515 \u2013 620 MPa<\/td>\n<\/tr>\n<tr>\n<td>Yield Strength<\/td>\n<td>\u2265 205 MPa<\/td>\n<\/tr>\n<tr>\n<td>Elongation<\/td>\n<td>\u2265 40%<\/td>\n<\/tr>\n<tr>\n<td>Hardness (Max)<\/td>\n<td>95 HRB<\/td>\n<\/tr>\n<tr>\n<td>Operating Temperature<\/td>\n<td>Up to 870\u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Manufacturing Processes<\/strong><\/p>\n<p>Our threaded pipe plugs are produced via:<\/p>\n<ul data-spread=\"false\">\n<li><strong>Investment Casting (Lost Wax Process)<\/strong>\u00a0for mid-sized and intricate plugs<\/li>\n<li><strong>Hot Stamping<\/strong>\u00a0for high-strength heavy-duty plugs<\/li>\n<li><strong>Turning from Solid Round Bar<\/strong>\u00a0for small batch precision plugs<\/li>\n<li>Post-processing includes\u00a0<strong>CNC threading<\/strong>, surface polishing, and pressure testing<\/li>\n<\/ul>\n<p><strong>Machinery Used<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>CNC Lathes and Machining Centers<\/li>\n<li>Vertical Milling Machines for head shaping<\/li>\n<li>Thread Gauging Instruments (NPT, BSP, BSPT standards)<\/li>\n<li>Spectrometers and Surface Roughness Testers<\/li>\n<li>Leak Test Stations and Profile Projectors<\/li>\n<\/ul>\n<p><strong>Typical Parts Produced<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>Square Head Plugs (NPT \/ BSPT \/ BSP \/ NPSM)<\/li>\n<li>Hex Head Plugs<\/li>\n<li>Flush Plugs<\/li>\n<li>Solid Bar Turned Threaded Plugs<\/li>\n<\/ul>\n<p><strong>Finish Options<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>Shot Blasted Natural Finish<\/li>\n<li>Electro-polished for cleanroom or sanitary applications<\/li>\n<li>Machined Finish with protective threading caps<\/li>\n<\/ul>\n<p><strong>Industries Served<\/strong><\/p>\n<p>Our Stainless Steel pipe plugs are widely used in:<\/p>\n<ul data-spread=\"false\">\n<li>Petrochemical &amp; Oil Refining Units<\/li>\n<li>Water Treatment Systems<\/li>\n<li>Hydraulic and Pneumatic Circuits<\/li>\n<li>Food &amp; Beverage Processing Equipment<\/li>\n<li>Marine and Offshore Installations<\/li>\n<li>HVAC and Fire Sprinkler Networks<\/li>\n<\/ul>\n<p><strong>Dimensional Chart (Standard Sizes)<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td>Nominal Pipe Size R<\/td>\n<td>A (Thread Length)\u00a0 L<\/td>\n<td>B (Across Flats)<\/td>\n<td>Thread Standards<\/td>\n<\/tr>\n<tr>\n<td>1\/4&#8243;<\/td>\n<td>11 mm<\/td>\n<td>14 mm<\/td>\n<td>NPT, BSP, BSPT, NPSM<\/td>\n<\/tr>\n<tr>\n<td>3\/8&#8243;<\/td>\n<td>12 mm<\/td>\n<td>17 mm<\/td>\n<td>NPT, BSP, BSPT<\/td>\n<\/tr>\n<tr>\n<td>1\/2&#8243;<\/td>\n<td>14 mm<\/td>\n<td>22 mm<\/td>\n<td>NPT, BSP, BSPT, NPSM<\/td>\n<\/tr>\n<tr>\n<td>3\/4&#8243;<\/td>\n<td>16 mm<\/td>\n<td>28 mm<\/td>\n<td>NPT, BSP, BSPT<\/td>\n<\/tr>\n<tr>\n<td>1&#8243;<\/td>\n<td>18 mm<\/td>\n<td>35 mm<\/td>\n<td>NPT, BSP, BSPT<\/td>\n<\/tr>\n<tr>\n<td>1-1\/4&#8243;<\/td>\n<td>20 mm<\/td>\n<td>44 mm<\/td>\n<td>NPT, BSPT<\/td>\n<\/tr>\n<tr>\n<td>1-1\/2&#8243;<\/td>\n<td>22 mm<\/td>\n<td>50 mm<\/td>\n<td>NPT, BSPT<\/td>\n<\/tr>\n<tr>\n<td>2&#8243;<\/td>\n<td>25 mm<\/td>\n<td>64 mm<\/td>\n<td>NPT, BSPT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Tolerances and Testing<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>Dimensional Tolerance: \u00b10.2 mm<\/li>\n<li>Threading Accuracy: Class 2B (per ASME B1.20.1 for NPT)<\/li>\n<li>Surface Finish: \u2264 3.2 Ra (machined)<\/li>\n<li>Hydrostatic Testing: 1.5x rated pressure<\/li>\n<\/ul>\n<p><strong>Turnaround Time<\/strong><\/p>\n<p>We offer a standard\u00a0<strong>4 to 6-week lead time<\/strong>\u00a0from order confirmation, with express manufacturing and global air freight available for urgent demands. All parts are inspected before dispatch and supported by detailed test documentation.<\/p>\n<p><strong>Why Choose Us<\/strong><\/p>\n<p>Our 30+ years of export experience, combined with advanced manufacturing technology and client-centric service, ensure reliability. We offer:<\/p>\n<ul data-spread=\"false\">\n<li>Flexible production schedules<\/li>\n<li>Custom branding and packaging<\/li>\n<li>Quick response and engineering support<\/li>\n<li>Quality consistency with competitive pricing<\/li>\n<li>ISO-compliant systems and export certification<\/li>\n<\/ul>\n<p><strong>Frequently Asked Questions<\/strong><\/p>\n<ol start=\"1\" data-spread=\"true\">\n<li>Do you provide metric and imperial sizes?\n<ul data-spread=\"false\">\n<li>Yes, we offer both metric and inch-based pipe thread plugs.<\/li>\n<\/ul>\n<\/li>\n<li>Can you supply plugs with food-grade finish?\n<ul data-spread=\"false\">\n<li>Yes, electro-polished plugs are available for sanitary and cleanroom use.<\/li>\n<\/ul>\n<\/li>\n<li>Do you offer third-party inspection?\n<ul data-spread=\"false\">\n<li>Yes, with agencies like SGS, BV, TUV on customer request.<\/li>\n<\/ul>\n<\/li>\n<li>What are your MOQ terms?\n<ul data-spread=\"false\">\n<li>Flexible MOQ for repeat buyers and export partners.<\/li>\n<\/ul>\n<\/li>\n<li>Can you mark plugs with logos or codes?\n<ul data-spread=\"false\">\n<li>Yes, laser or emboss marking is available on bulk orders.<\/li>\n<\/ul>\n<\/li>\n<li>Do you support custom threads?\n<ul data-spread=\"false\">\n<li>Absolutely. We manufacture NPT, BSPT, BSP, NPSM and special threads.<\/li>\n<\/ul>\n<\/li>\n<li>Are the threads dryseal?\n<ul data-spread=\"false\">\n<li>We can produce NPTF (dryseal) on request.<\/li>\n<\/ul>\n<\/li>\n<li>What quality certificates do you provide?\n<ul data-spread=\"false\">\n<li>Material test certificate, pressure test report, RoHS and REACH compliance.<\/li>\n<\/ul>\n<\/li>\n<li>Are plugs pressure tested?\n<ul data-spread=\"false\">\n<li>Yes, we perform hydrostatic testing on all batches.<\/li>\n<\/ul>\n<\/li>\n<li>Do you have export experience?<\/li>\n<\/ol>\n<ul data-spread=\"false\">\n<li>Yes, we export to North America, EU, Gulf, and SE Asia regularly.<\/li>\n<\/ul>\n<p><strong>Customer Testimonial<\/strong><\/p>\n<p>&#171;We\u2019ve ordered Stainless Steel square head plugs for multiple valve assemblies. Their quality and consistency match our ASME requirements, and their team has always delivered well-packed, documentation-ready exports on time.&#187; \u2014\u00a0<strong>Tom L., Ohio, USA<\/strong><\/p>\n<p><strong>Glossary of Terms<\/strong><\/p>\n<ul data-spread=\"false\">\n<li><strong>Square Head Plug<\/strong>: A plug with a square protrusion for wrench tightening<\/li>\n<li><strong>NPT\/BSPT<\/strong>: Tapered pipe thread standards used in sealing connections<\/li>\n<li><strong>Investment Casting<\/strong>: Precision casting process using wax molds<\/li>\n<li><strong>Hot Stamping<\/strong>: Forging process using heated dies to shape metal<\/li>\n<li><strong>Thread Gauging<\/strong>: Measurement of thread conformity using calibrated gauges<\/li>\n<\/ul>\n<p><strong>Packaging and Shipping<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>Moisture-resistant polybags or caps on threads<\/li>\n<li>Corrugated export cartons with dividers<\/li>\n<li>Wooden crates for bulk or sea freight<\/li>\n<li>Custom labels with part numbers, barcodes, and logos available<\/li>\n<\/ul>\n<h3 class=\"\" data-start=\"73\" data-end=\"140\"><strong>Related parts we offer:<\/strong><\/h3>\n<ul data-start=\"141\" data-end=\"553\">\n<li class=\"\" data-start=\"141\" data-end=\"170\">\n<p class=\"\" data-start=\"143\" data-end=\"170\">SS square head pipe plugs<\/p>\n<\/li>\n<li class=\"\" data-start=\"171\" data-end=\"212\">\n<p class=\"\" data-start=\"173\" data-end=\"212\">Stainless Steel threaded square plugs<\/p>\n<\/li>\n<li class=\"\" data-start=\"213\" data-end=\"247\">\n<p class=\"\" data-start=\"215\" data-end=\"247\">304 stainless square head plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"248\" data-end=\"287\">\n<p class=\"\" data-start=\"250\" data-end=\"287\">316 stainless square head pipe plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"288\" data-end=\"322\">\n<p class=\"\" data-start=\"290\" data-end=\"322\">BSP threaded square head plugs<\/p>\n<\/li>\n<li class=\"\" data-start=\"323\" data-end=\"359\">\n<p class=\"\" data-start=\"325\" data-end=\"359\">NPT Stainless Steel square plugs<\/p>\n<\/li>\n<li class=\"\" data-start=\"360\" data-end=\"394\">\n<p class=\"\" data-start=\"362\" data-end=\"394\">Square head screw pipe plug SS<\/p>\n<\/li>\n<li class=\"\" data-start=\"395\" data-end=\"425\">\n<p class=\"\" data-start=\"397\" data-end=\"425\">Industrial SS square plugs<\/p>\n<\/li>\n<li class=\"\" data-start=\"426\" data-end=\"471\">\n<p class=\"\" data-start=\"428\" data-end=\"471\">Stainless Steel pipe end plug square head<\/p>\n<\/li>\n<li class=\"\" data-start=\"472\" data-end=\"516\">\n<p class=\"\" data-start=\"474\" data-end=\"516\">High pressure stainless square head plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"517\" data-end=\"553\">\n<p class=\"\" data-start=\"519\" data-end=\"553\">Metric stainless square pipe plugs<\/p>\n<\/li>\n<li class=\"\" data-start=\"517\" data-end=\"553\">\n<p class=\"\" data-start=\"519\" data-end=\"553\">SS threaded pipe plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"651\" data-end=\"679\">\n<p class=\"\" data-start=\"653\" data-end=\"679\">BSPT stainless pipe plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"680\" data-end=\"710\">\n<p class=\"\" data-start=\"682\" data-end=\"710\">Stainless threaded end cap<\/p>\n<\/li>\n<li class=\"\" data-start=\"711\" data-end=\"744\">\n<p class=\"\" data-start=\"713\" data-end=\"744\">Stainless Steel pipe plug NPT<\/p>\n<\/li>\n<li class=\"\" data-start=\"745\" data-end=\"785\">\n<p class=\"\" data-start=\"747\" data-end=\"785\">316 stainless threaded plug supplier<\/p>\n<\/li>\n<li class=\"\" data-start=\"786\" data-end=\"813\">\n<p class=\"\" data-start=\"788\" data-end=\"813\">304 SS plug fitting BSP<\/p>\n<\/li>\n<li class=\"\" data-start=\"814\" data-end=\"850\">\n<p class=\"\" data-start=\"816\" data-end=\"850\">NPT male threaded stainless plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"851\" data-end=\"892\">\n<p class=\"\" data-start=\"853\" data-end=\"892\">Sanitary threaded pipe plug stainless<\/p>\n<\/li>\n<li class=\"\" data-start=\"893\" data-end=\"926\">\n<p class=\"\" data-start=\"895\" data-end=\"926\">Industrial threaded pipe plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"927\" data-end=\"954\">\n<p class=\"\" data-start=\"929\" data-end=\"954\">Stainless barstock plug<\/p>\n<\/li>\n<li class=\"\" data-start=\"955\" data-end=\"990\">\n<p class=\"\" data-start=\"957\" data-end=\"990\">Custom stainless plug with thread<\/p>\n<\/li>\n<\/ul>\n<p>Looking for high-quality Stainless Steel plugs? \ud83d\udce7\u00a0<strong>Email or WhatsApp<\/strong>\u00a0us now!<br \/>\n<strong>Request a catalogue or RFQ now!<\/strong><\/p>\n","protected":false},"featured_media":14579,"template":"","meta":[],"product_brand":[],"product_cat":[466],"product_tag":[],"class_list":{"0":"post-25516","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-466","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Stainless Steel Square Head Plugs | Stainless Steel Threaded Pipe Plugs<\/title>\n<meta name=\"description\" content=\"Conex Metals, a global leader in metal manufacturing and export for 34 years, delivers excellence worldwide. 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