{"id":2090,"date":"2020-04-25T21:28:52","date_gmt":"2020-04-25T19:28:52","guid":{"rendered":"https:\/\/biaform.com.pl\/?page_id=2090"},"modified":"2020-06-21T23:56:17","modified_gmt":"2020-06-21T21:56:17","slug":"quality-grades","status":"publish","type":"page","link":"https:\/\/biaform.com.pl\/en\/about-us\/quality-grades\/","title":{"rendered":"Quality grades"},"content":{"rendered":"<section class=\"l-section wpb_row height_auto width_full\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row type_default valign_top\"><div class=\"vc_col-sm-12 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><section class=\"l-section wpb_row height_medium color_alternate with_img parallax_ver with_overlay\" id=\"title\"><div class=\"l-section-img\" style=\"background-image: url(https:\/\/biaform.com.pl\/wp-content\/uploads\/2020\/03\/title-bg-2.jpg);background-repeat: no-repeat;\" data-img-width=\"1920\" data-img-height=\"800\"><\/div><div class=\"l-section-overlay\" style=\"background: rgba(0,0,0,0.10)\"><\/div><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row type_default valign_middle\"><div class=\"vc_col-sm-6 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><h1 class=\"w-post-elm post_title us_custom_607cd7e8 entry-title color_link_inherit\">Quality grades<\/h1><\/div><\/div><\/div><div class=\"vc_col-sm-6 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><ol class=\"g-breadcrumbs us_custom_963f34bc separator_icon align_right has_text_color\" itemscope itemtype=\"http:\/\/schema.org\/BreadcrumbList\"><li class=\"g-breadcrumbs-item\" itemprop=\"itemListElement\" itemscope itemtype=\"http:\/\/schema.org\/ListItem\"><a itemprop=\"item\" href=\"https:\/\/biaform.com.pl\/en\/\"><span itemprop=\"name\">Home<\/span><\/a><meta itemprop=\"position\" content=\"1\"\/><\/li><li class=\"g-breadcrumbs-separator\"><i class=\"material-icons\">chevron_right<\/i><\/li><li class=\"g-breadcrumbs-item\">Pages<\/li><\/ol><\/div><\/div><\/div><\/div><\/div><\/section>\n<\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row height_medium table2\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row type_default valign_top gap-2em\"><style>.g-cols.gap-2em{margin:0 calc(-1.5rem - 2em)}.gap-2em > .vc_column_container {padding:2em}<\/style><div class=\"vc_col-sm-12 wpb_column vc_column_container animate_afb\" style=\"animation-delay:0.2s\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div id=\"ultimate-heading-926169e2e96493cab\" class=\"uvc-heading ult-adjust-bottom-margin ultimate-heading-926169e2e96493cab uvc-6407 \" data-hspacer=\"line_with_icon\" data-hline_width=\"200\" data-hicon_type=\"selector\" data-hborder_style=\"solid\" data-hborder_height=\"3\" data-hborder_color=\"#503201\" data-icon_width=\"32\" data-hfixer=\"20\"  data-halign=\"center\" style=\"text-align:center\"><div class=\"uvc-main-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-926169e2e96493cab h2'  data-responsive-json-new='{\"font-size\":\"\",\"line-height\":\"\"}' ><h2 style=\"font-weight:normal;margin-bottom:10px;\">Quality grades<\/h2><\/div><div class=\"uvc-sub-heading ult-responsive\"  data-ultimate-target='.uvc-heading.ultimate-heading-926169e2e96493cab .uvc-sub-heading '  data-responsive-json-new='{\"font-size\":\"\",\"line-height\":\"\"}'  style=\"font-weight:normal;margin-bottom:10px;\">Quality grades in plywood<\/div><div class=\"uvc-heading-spacer line_with_icon\" style=\"topheight:32px;\"><div class=\"ult-just-icon-wrapper  \"><div class=\"align-icon\" style=\"text-align:center;\">\n<div class=\"aio-icon none \"  style=\"color:#64bc46;font-size:32px;display:inline-block;\">\n\t<i class=\"Defaults-stack-overflow\"><\/i>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"vc_col-sm-12 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"w-tabs layout_hor style_timeline switch_click icon_chevron iconpos_right title_atleft\"><div class=\"w-tabs-list hidden items_4\"><div class=\"w-tabs-list-h\"><a class=\"w-tabs-item active defined-active\" aria-controls=\"content-1585514421694-b1c266aa-b7c4\" href=\"javascript:void(0);\"><span class=\"w-tabs-item-title\">GRADE I<\/span><\/a><a class=\"w-tabs-item\" aria-controls=\"content-1585514421767-64ff7cd2-5f4f\" href=\"javascript:void(0);\"><span class=\"w-tabs-item-title\">GRADE II<\/span><\/a><a class=\"w-tabs-item\" aria-controls=\"content-1585514421853-bb363750-d8aa\" href=\"javascript:void(0);\"><span class=\"w-tabs-item-title\">GRADE III<\/span><\/a><a class=\"w-tabs-item\" aria-controls=\"content-1585514681766-cf5845cd-718b\" href=\"javascript:void(0);\"><span class=\"w-tabs-item-title\">GRADE IV<\/span><\/a><\/div><\/div><div class=\"w-tabs-sections\"><div class=\"w-tabs-sections-h\"><div class=\"w-tabs-section active\" id=\"1585514421694-b1c266aa-b7c4\"><button aria-controls=\"content-1585514421694-b1c266aa-b7c4\" class=\"w-tabs-section-header active\"><div class=\"w-tabs-section-header-h\"><div class=\"w-tabs-section-title\">GRADE I<\/div><div class=\"w-tabs-section-control\"><\/div><\/div><\/button><div class=\"w-tabs-section-content\" id=\"content-1585514421694-b1c266aa-b7c4\" aria-expanded=\"true\"><div class=\"w-tabs-section-content-h i-cf\"><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>Depending on surface quality \u2013 hardwood<\/p>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><table>\n<tbody>\n<tr>\n<td style=\"background-color: #ebebeb; border-bottom: 1px solid #ddd;\" colspan=\"2\"><strong>Allowable defects*<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #ebebeb; width: 33%;\"><strong>Value<\/strong><\/td>\n<td style=\"background-color: #ebebeb;\"><strong>Description<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Pin knots<\/td>\n<td>allowable diameter of up to 3 mm; up to 3 pcs\/m2<\/td>\n<\/tr>\n<tr>\n<td>Sound intergrown knots<\/td>\n<td>allowable diameter of up to 15 mm (cumulative diameter shall not exceed 30 mm\/m2), small cracks allowable<\/td>\n<\/tr>\n<tr>\n<td>Filled unsound knots and knot holes<\/td>\n<td>with diameter of up to 6 mm, up to 2 pcs\/m2<\/td>\n<\/tr>\n<tr>\n<td>Open splits<\/td>\n<td>less than 1\/10 of a length of a sheet, width up to 3 mm, 3 pcs per sheet width<\/td>\n<\/tr>\n<tr>\n<td>Closed splits<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Wood structure defects<\/td>\n<td>minor ones allowable<\/td>\n<\/tr>\n<tr>\n<td>Sound color changes<\/td>\n<td>minor decoloration allowable<\/td>\n<\/tr>\n<tr>\n<td>Repairs (patches, plugs)<\/td>\n<td>3 pcs\/m2 fully filled<\/td>\n<\/tr>\n<tr>\n<td>Edges defects<\/td>\n<td>allowable up to 2 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>* Catalogue of most common defects, for other defects please refer to EN 635 -1-2-3 standards.<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"w-tabs-section\" id=\"1585514421767-64ff7cd2-5f4f\"><button aria-controls=\"content-1585514421767-64ff7cd2-5f4f\" class=\"w-tabs-section-header\"><div class=\"w-tabs-section-header-h\"><div class=\"w-tabs-section-title\">GRADE II<\/div><div class=\"w-tabs-section-control\"><\/div><\/div><\/button><div class=\"w-tabs-section-content\" id=\"content-1585514421767-64ff7cd2-5f4f\" aria-expanded=\"false\"><div class=\"w-tabs-section-content-h i-cf\"><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>Depending on surface quality \u2013 hardwood<\/p>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><table>\n<tbody>\n<tr>\n<td style=\"background-color: #ebebeb; border-bottom: 1px solid #ddd;\" colspan=\"2\"><strong>Allowable defects*<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #ebebeb; width: 33%;\"><strong>Value<\/strong><\/td>\n<td style=\"background-color: #ebebeb;\"><strong>Description<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Pin knots<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Sound intergrown knots<\/td>\n<td>allowable diameter of up to 35 mm, small cracks<\/td>\n<\/tr>\n<tr>\n<td>Filled unsound knots and knot holes<\/td>\n<td>if not fixed allowable diameter of 5 mm, if fixed \u2013 up to 10 mm, 3 pcs\/m2<\/td>\n<\/tr>\n<tr>\n<td>Open splits<\/td>\n<td>if properly filled, allowable shorter than 1\/5 length of a sheet, width up to 5 mm, 3 pcs\/m of a sheet width<\/td>\n<\/tr>\n<tr>\n<td>Closed splits<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Wood structure defects<\/td>\n<td>minor allowable<\/td>\n<\/tr>\n<tr>\n<td>Sound color changes<\/td>\n<td>minor decoloration allowable<\/td>\n<\/tr>\n<tr>\n<td>Repairs (patches, plugs)<\/td>\n<td>6 pcs\/m2<\/td>\n<\/tr>\n<tr>\n<td>Edges defects<\/td>\n<td>allowable up to 5 mm<\/td>\n<\/tr>\n<tr>\n<td>Bark pokets<\/td>\n<td>up to width of 5 mm, if correctly filled<\/td>\n<\/tr>\n<tr>\n<td>Open shakes<\/td>\n<td>up to width of 3 mm, 1 pcs\/m of sheet width, with splits infilled if their width exceeds 1 mm<\/td>\n<\/tr>\n<tr>\n<td>Glue seepage<\/td>\n<td>small and seldom<\/td>\n<\/tr>\n<tr>\n<td>Hollows, traces, ridges<\/td>\n<td>minor ones allowable<\/td>\n<\/tr>\n<tr>\n<td>Overlaping<\/td>\n<td>up to 1 pcs\/m2 and with length up to 100 mm<\/td>\n<\/tr>\n<tr>\n<td>Surface roughness<\/td>\n<td>minor roughness allowable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>* Catalogue of most common defects, for other defects please refer to EN 635 -1-2-3 standards.<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"w-tabs-section\" id=\"1585514421853-bb363750-d8aa\"><button aria-controls=\"content-1585514421853-bb363750-d8aa\" class=\"w-tabs-section-header\"><div class=\"w-tabs-section-header-h\"><div class=\"w-tabs-section-title\">GRADE III<\/div><div class=\"w-tabs-section-control\"><\/div><\/div><\/button><div class=\"w-tabs-section-content\" id=\"content-1585514421853-bb363750-d8aa\" aria-expanded=\"false\"><div class=\"w-tabs-section-content-h i-cf\"><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>Depending on surface quality \u2013 hardwood<\/p>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><table>\n<tbody>\n<tr>\n<td style=\"background-color: #ebebeb; border-bottom: 1px solid #ddd;\" colspan=\"2\"><strong>Allowable defects*<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #ebebeb; width: 33%;\"><strong>Value<\/strong><\/td>\n<td style=\"background-color: #ebebeb;\"><strong>Description<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Pin knots<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Sound intergrown knots<\/td>\n<td>up to diameter of 50 mm<\/td>\n<\/tr>\n<tr>\n<td>Filled unsound knots and knot holes<\/td>\n<td>up to diameter of 40 mm<\/td>\n<\/tr>\n<tr>\n<td>Open splits<\/td>\n<td>If not filled allowable: smaller than 1\/3 sheet length and with width up 20 mm, 3 pcs\/m of sheet length, if filled \u2013 no restrictions<\/td>\n<\/tr>\n<tr>\n<td>Closed splits<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Wood structure defects<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Sound color changes<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Repairs (patches, plugs)<\/td>\n<td>no limitations<\/td>\n<\/tr>\n<tr>\n<td>Edges defects<\/td>\n<td>allowable up to 5 mm<\/td>\n<\/tr>\n<tr>\n<td>Bark pokets<\/td>\n<td>up to width of 25 mm<\/td>\n<\/tr>\n<tr>\n<td>Open shakes<\/td>\n<td>up to width of 5 mm, 2 pcs\/m of sheet width with splits infilled allowable<\/td>\n<\/tr>\n<tr>\n<td>Glue seepage<\/td>\n<td>allowable up to 5 % of the sheet surface<\/td>\n<\/tr>\n<tr>\n<td>Oversanding<\/td>\n<td>allowable up to1 % of the sheet surface<\/td>\n<\/tr>\n<tr>\n<td>Hollows, traces, ridges<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Overlaping<\/td>\n<td>up to 2 pcs\/m2<\/td>\n<\/tr>\n<tr>\n<td>Surface roughness<\/td>\n<td>allowable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>* Catalogue of most common defects, for other defects please refer to EN 635 -1-2-3 standards.<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"w-tabs-section\" id=\"1585514681766-cf5845cd-718b\"><button aria-controls=\"content-1585514681766-cf5845cd-718b\" class=\"w-tabs-section-header\"><div class=\"w-tabs-section-header-h\"><div class=\"w-tabs-section-title\">GRADE IV<\/div><div class=\"w-tabs-section-control\"><\/div><\/div><\/button><div class=\"w-tabs-section-content\" id=\"content-1585514681766-cf5845cd-718b\" aria-expanded=\"false\"><div class=\"w-tabs-section-content-h i-cf\"><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>Depending on surface quality \u2013 hardwood<\/p>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><table>\n<tbody>\n<tr>\n<td style=\"background-color: #ebebeb; border-bottom: 1px solid #ddd;\" colspan=\"2\"><strong>Allowable defects*<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #ebebeb; width: 33%;\"><strong>Value<\/strong><\/td>\n<td style=\"background-color: #ebebeb;\"><strong>Description<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Pin knots<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Sound intergrown knots<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Filled unsound knots and knot holes<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Open splits<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Closed splits<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Wood structure defects<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Sound color changes<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Repairs (patches, plugs)<\/td>\n<td>no litmiations<\/td>\n<\/tr>\n<tr>\n<td>Edges defects<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Bark pokets<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Open shakes<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Glue seepage<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Oversanding<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Hollows, traces, ridges<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Overlaping<\/td>\n<td>allowable<\/td>\n<\/tr>\n<tr>\n<td>Surface roughness<\/td>\n<td>allowable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p>* Catalogue of most common defects, for other defects please refer to EN 635 -1-2-3 standards.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><section class=\"l-section wpb_row height_auto width_full\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row type_default valign_top\"><div class=\"vc_col-sm-12 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><section class=\"l-section wpb_row height_huge with_img parallax_ver with_overlay\" id=\"cta-cont\"><div class=\"l-section-img\" style=\"background-image: url(https:\/\/biaform.com.pl\/wp-content\/uploads\/2020\/03\/biaform-kontakt.jpg);background-position: bottom center;background-repeat: no-repeat;\" data-img-width=\"1600\" data-img-height=\"1067\"><\/div><div class=\"l-section-overlay\" style=\"background: rgba(0,0,0,0.4)\"><\/div><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row type_default valign_top\"><div class=\"vc_col-sm-6 vc_col-lg-offset-8 vc_col-lg-4 vc_col-md-offset-7 vc_col-md-5 vc_col-sm-offset-6 wpb_column vc_column_container animate_fade\" style=\"animation-delay:0.2s\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"w-actionbox us_custom_2aff76bb color_primary controls_bottom\"><div class=\"w-actionbox-text\"><h3>Do you have questions?<\/h3><p>Call or write. We will be happy to answer your questions.<\/p>\n<\/div><div class=\"w-actionbox-controls\"><a class=\"w-btn us-btn-style_3 icon_atright\" title=\"Contact\" href=\"\/en\/contact\/\"><span class=\"w-btn-label\">Contact us<\/span><i class=\"fas fa-angle-double-right\"><\/i><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>\n<\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"Quality gradesHomechevron_rightPages Quality gradesQuality grades in plywood GRADE IGRADE IIGRADE IIIGRADE IVGRADE IDepending on surface quality \u2013 hardwood Allowable defects* Value Description Pin knots allowable diameter of up to 3 mm; up to 3 pcs\/m2 Sound intergrown knots allowable diameter of up to 15 mm (cumulative diameter shall not exceed 30 mm\/m2), small cracks allowable...","protected":false},"author":1,"featured_media":0,"parent":2062,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-2090","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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