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  3. Product Store /
  4. Flanges /
  5. Blind
Blind View All
Blind Flanges are round plates which have all relevant boltholes but lack a center hole and thus are used to close off the ends of a piping system or a pressure vessel opening. Two different blind flanges with a flat face and a raised face.
  • Forged Steel Blind Flanges conform to ASTM A105 while Stainless Steel Flanges conform to ASTM A182.
  • Stocked in sizes from 1/2" to 24".
  • Available both with a flat face and a raised face.
  • Flanges of Class 150#, 300#, 600#, 900#, and 1500# are stocked.
  • Available in Carbon Steel as well as Stainless in grades 304L and 316L (L=low carbon).
  • Carbon Steel Flanges are available in both domestic and less expensive Imported versions. All Stainless Blind Flanges that we stock are imported.
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click here for bolting specifications Temperature/Pressure cross reference by Class
Three different Blind Flanges with a flat face and a raised face.
Help

To start, select size. Follow the green box to refine selections as desired. Click “Lookup Product” any time after selecting size to display products matching criteria entered so far. Fields autofill when only one choice. Or use search box above.

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Domestic = Made in the USA

Import = Made anywhere else

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Originally the numbers for "Class" (150, 300, 600, etc.) was the pressure (psig) at the corresponding saturated steam temperature. Ratings today are different because of changes made in materials and flange design.  Link to chart of temperature/pressure by class is above.

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Flanges are avaiable in aluminum, carbon steel and stainless steel in grades 304, 304L, 316 and 316L. The L designates "low carbon", making the fitting good for welding.

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Flat Face Flanges have a gasket surface in the same plane as the face of the bolting circle.  For Raised Face Flanges, the gasket surface is raised slightly above the face of the bolting circle, concentrating more pressure on a smaller gasket area.

Results

'); var specList = $('.cat-description ul').children('li'); $('.product-specs ul').append(specList); // VIEW ALL BUTTON $('#view-all').on('click', function(){ $(this).parent('h3').after('
'); $.ajax({ type: 'POST', url: '/embeds/all_cat_products', data: { csrf_token: '6d903490316db07a3361e960a1182df753ce4df0', cat_id: '192', segment_3: 'flanges', segment_4: 'blind', }, success: function(data){ $('.results').show(); var scroll = $('.results').offset().top; $('html, body').animate({ scrollTop: scroll }, 500); $('#css-loader').remove(); $('.results .product-results .product-result').remove(); $('.results .product-results').append(data); addImpression(); quantity(); } }); }); // --------- FIRST DROPDOWN CREATION -----/// var firstFieldID = $('select:first').data('d-field'); function fetchFirstOption(){ return $.ajax({ type: "POST", url: "/embeds/products_loop", data: { csrf_token: '6d903490316db07a3361e960a1182df753ce4df0', field_id: firstFieldID, cat_id: 192, } }); } function firstOption(data){ $('select:first').append(data); createDropDowns(); dropdown(); productForm(); } fetchFirstOption().done(firstOption); // ---- END FIRST DROPDOWN CREATION ------ // // FETCH RELATED function fetchRelated(){ var SKUs = $('.related-products li').map( function(){ return $(this).text(); }).get(); return $.ajax({ type: 'POST', url: '/embeds/related_products', data: { csrf_token: '6d903490316db07a3361e960a1182df753ce4df0', sku_1: SKUs[0], sku_2: SKUs[1], sku_3: SKUs[2], sku_4: SKUs[3], sku_5: SKUs[4] }, error: function (request, status, error) {console.log(request.responseText);}, }); } function related(data){ if( data != ""){ $('#related-products').show(); $('#related-products ul li').remove(); $('#related-products ul').append(data); } } // ADDED TO CART POPUP if( window.location.hash == "#added" ){ var entryID = "blind"; var category = "flanges"; var subcategory = "blind"; $.ajax({ type: 'POST', url: '/embeds/product_popup', data: { csrf_token: '6d903490316db07a3361e960a1182df753ce4df0', entry_id: entryID, category: category, subcategory: subcategory, }, success: function(data){ $('.cart-popup').append(data); $('.cart-popup').show(); popupControls(); fetchRelated().done(related); } }); } else{ $('.cart-popup').hide(); $('.cart-popup popup-content').remove(); } // ---------- END ADDED TO CART -------- // // IF GET VARIABLES FILL IN FIELDS if( window.location.href.indexOf('?') > -1 ){ count = 0; var getVars = {}; document.location.search.replace(/\??(?:([^=]+)=([^&]*)&?)/g, function () { function decode(s) { return decodeURIComponent(s.split("+").join(" ")); } getVars[decode(arguments[1])] = decode(arguments[2]); }); var values = [] $.each(getVars, function(key, value){ if ( key.indexOf('value') > -1 ){values.push(value);} }); // console.log(values); valueCount = values.length; function fillFirstDropDown(){ var options = $('.dropdown#select-1 dd li .value').map( function(){ return $(this).text(); }).get(); var choice = options.indexOf(values[0]); $('.product-form .dropdown#select-1 dd li:eq('+choice+') a').trigger('click'); count++ } $(window).on('load', function(){ fetchFirstOption().done(fillFirstDropDown); var pageUrl = window.location.href; var varString = pageUrl.substr(pageUrl.indexOf('?'), 500); var ajaxUrl = '/embeds/product_results'+varString; function fetchFromURL(){ return $.ajax({ type: 'GET', url: ajaxUrl, data: { csrf_token: '6d903490316db07a3361e960a1182df753ce4df0', segment_3: 'flanges', segment_4: 'blind', sub_cat_image: 'https://www.steelsupplylp.com/uploads/category/Pipe-fittings-Blind-Flanges.jpg', cat_id: '192', }, error: function (request, status, error) {alert(request.responseText);}, }); } function urlResults(data){ $('.results').show(); $('.results .product-results .product-result').remove(); $('.results .product-results').append(data); addImpression(); var scroll = $('.results').offset().top; $('html, body').animate({ scrollTop: scroll }, 500); quantity(); } fetchFromURL().done(urlResults).then(fetchRelated).then(related); }); } // END GET VARIABLES // COUNT FIELDS var fieldCount = $('.field').length; // GET FIELD IDS var fieldIDs = $('select').map( function() { return $(this).data('d-field'); }).get(); // WHEN MAKING A SELECTION $('select').on('change', function(){ var changed = $('.dropdown.selected').length; var index = $(this).parent().index(); var currentID = $(this).parent().index()+1; var nextID = $(this).parent().index()+2; var productValues = $('select').map( function() { var pValue = $(this).val(); if( pValue != undefined ){ return pValue; }; }).get(); var nextFieldID = $('#select-'+nextID).data('d-field'); // clear values previously selected function refreshDropDowns(){ $.each( $('.field:gt('+index+')'), function(){ var source = $('select', this); var selectID = $(source).attr('id'); var selected = $(source).find('option[selected]'); var options = $('option', source).not(':first'); $(this).append(''); $("#"+ selectID + '.dropdown').append('
' + selected.text() + ''+ selected.val() +'
'); $("#"+ selectID + '.dropdown').append('
    '); options.each(function(){ $("#" + selectID +" dd ul").append('
  • ' + $(this).text() + '' + $(this).val() + '
    • '); }); }); $('#select-'+nextID+'.dropdown').removeClass('disabled'); $('#select-'+nextID+'.dropdown').addClass('next'); } // FETCH DATA FOR NEXT DROPDOWN function fetchNextOption(){ return $.ajax({ type: "POST", url: "/embeds/products_loop_conditional", data: { csrf_token: '6d903490316db07a3361e960a1182df753ce4df0', field_id: nextFieldID, cat_id: 192, field_id_1: fieldIDs[0], field_id_2: fieldIDs[1], field_id_3: fieldIDs[2], field_id_4: fieldIDs[3], field_id_5: fieldIDs[4], field_id_6: fieldIDs[5], field_id_7: fieldIDs[6], field_id_8: fieldIDs[7], value_1: productValues[0], value_2: productValues[1], value_3: productValues[2], value_4: productValues[3], value_5: productValues[4], value_6: productValues[5], value_7: productValues[6], value_8: productValues[7], }, error: function (request, status, error) {alert(request.responseText);}, }); } // APPEND DATA TO NEXT OPTION function nextOption(data){ $('.field:gt('+index+') .dropdown').remove(); $('.field:gt('+index+') select option:first').attr('selected', 'selected'); $('#select-'+nextID).append(data); var nextFieldOptionCount = $('#select-'+nextID+' option').length; refreshDropDowns(); dropdown(); productForm(); // IF GET VARS, FILL IN DROPDOWNS if( window.location.href.indexOf('?') > -1 ){ count++ var fieldVal = count - 1; var link = $('.product-form .dropdown#select-'+count+' li a span.value').filter(function(index) { return $(this).text() === values[fieldVal]; }) $(link).trigger('click'); } // IF ONLY ONE OPTION TO SELECT, AUTOSELECT else if( window.location.href.indexOf('?') == -1 && nextFieldOptionCount == 2 ){ $('.product-form .dropdown#select-'+nextID+' dd a').trigger('click'); } } // IF PREVIOUS SELECTION, CLEAR LATER SELECTIONS if(currentID -1 ){ var urlnoVars = window.location.href; urlnoVars = urlnoVars.substring(0, urlnoVars.indexOf('?')); window.history.replaceState(urlnoVars, null, urlnoVars); } } // PROCEED NORMALLY AND FETCH NEXT OPTION if(nextID Loading...'); return $.ajax({ type: 'POST', url: '/embeds/product_results', data: { csrf_token: '6d903490316db07a3361e960a1182df753ce4df0', segment_3: 'flanges', segment_4: 'blind', cat_name: 'Flanges', sub_cat_name: 'Blind', sub_cat_image: 'https://www.steelsupplylp.com/uploads/category/Pipe-fittings-Blind-Flanges.jpg', cat_id: 192, field_name_1: fieldNames[0], field_name_2: fieldNames[1], field_name_3: fieldNames[2], field_name_4: fieldNames[3], field_name_5: fieldNames[4], field_name_6: fieldNames[5], field_name_7: fieldNames[6], field_name_8: fieldNames[7], value_1: productValues[0], value_2: productValues[1], value_3: productValues[2], value_4: productValues[3], value_5: productValues[4], value_6: productValues[5], value_7: productValues[6], value_8: productValues[7], } }); } function results(data){ $('.results').show(); $('.results .product-results .product-result').remove(); $('.results .product-results').append(data); addImpression(); var scroll = $('.results').offset().top; $('#loading').remove(); $('html, body').animate({ scrollTop: scroll }, 500); quantity(); numberOfCuts(); } function appendVariables(){ var history = '/pipe-fittings/product-store'; var url = history + '/flanges/blind'; $.each(productValues, function(index, value){ value = encodeURIComponent(value); var number = index + 1; if( index == 0 ){ url = url + "?value_"+number+"="+value; } else{ url = url + "&value_"+number+"="+value; } }); $.each(fieldNames, function(index, value){ var number = index + 1; url = url + "&field_name_"+number+"="+value; }); url = url + "&cat_id="+192; window.history.replaceState(history, null, url); return false; } fetchResults().done(results).then(appendVariables).then(fetchRelated).then(related); return false; }); function addImpression() { var eProducts = EE.getProducts(null, true); EE.addImpression(eProducts, getList()); } });

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