{"id":17,"date":"2026-09-03T17:13:40","date_gmt":"2026-09-03T17:13:40","guid":{"rendered":"https:\/\/glassubstrate.net\/borofloat-33\/"},"modified":"2026-09-06T14:58:40","modified_gmt":"2026-09-06T14:58:40","slug":"borofloat-33","status":"publish","type":"rg_material","link":"https:\/\/glassubstrate.net\/en\/material\/borofloat-33\/","title":{"rendered":"BOROFLOAT\u00ae 33 Glass"},"content":{"rendered":"<section class=\"rg-hero rg-hero--inner rg-slider rg-bf33-hero\" data-slider=\"\">\n<article class=\"rg-hero__slide is-active\" data-slide=\"\">\n    <img alt=\"SCHOTT BOROFLOAT 33 high borosilicate glass sheet\" class=\"rg-hero__image\" src=\"https:\/\/glassubstrate.net\/wp-content\/uploads\/2026\/08\/codex-clipboard-92a90495-f867-4bc6-bcfe-8041eb8bab2e.png\" loading=\"eager\" decoding=\"async\"\/><\/p>\n<div class=\"rg-hero__shade\"><\/div>\n<div class=\"rg-container rg-hero__contentwrap\">\n<div class=\"rg-hero__content rg-hero__content--left rg-hero__content--box\">\n<div class=\"rg-hero__eyebrow\">Genuine SCHOTT BOROFLOAT\u00ae 33 material<\/div>\n<h1>BOROFLOAT\u00ae 33\uff08BF33\uff09<span>High-Borosilicate Glass<\/span><\/h1>\n<p>German SCHOTT micro-float type 3.3 borosilicate flat glass. Standard sheet size 1,150 \u00d7 850 mm, with original manufacturer material certificates and batch traceability documents available per project.<\/p>\n<div class=\"rg-bf33-hero-actions\"><a class=\"rg-btn rg-btn--outline\" href=\"\/en\/about\/#quote\">Request a BF33 Material Quote<\/a><a class=\"rg-btn rg-btn--outline rg-btn--download\" href=\"https:\/\/www.schott.com\/-\/media\/project\/onex\/products\/b\/borofloat\/downloads\/schott-borofloat-technical-data-sheet-english-26032019.pdf?rev=aa66d15af04a4ce7994f5e7699350364\" target=\"_blank\" rel=\"noopener\">Download the official SCHOTT technical data PDF<\/a><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/article>\n<\/section>\n<section class=\"rg-section rg-bf33-intro\">\n<div class=\"rg-container\">\n<div class=\"rg-sectionhead\">\n<div class=\"rg-eyebrow\">BOROFLOAT\u00ae 33 supply in China<\/div>\n<h2>Authorised German SCHOTT BF33 material supply<\/h2>\n<\/p><\/div>\n<div class=\"rg-bf33-lead\">\n<p>Guangzhou Lighting Glass Co., Ltd. is a preferred partner of SCHOTT in China and an official BOROFLOAT\u00ae distributor, supplying genuine BOROFLOAT\u00ae 33 to R&amp;D, equipment manufacturing and volume purchasing projects. Original manufacturer material certificates and batch traceability documents are available per project.<\/p>\n<\/p><\/div>\n<div class=\"rg-bf33-benefits\">\n<article><strong>Genuine material<\/strong><span>Material certificates and batch traceability are supported, with a clear sourcing trail.<\/span><\/article>\n<article><strong>Build-to-print processing<\/strong><span>Sheet, cut-to-size and precision parts can all be assessed against the drawing.<\/span><\/article>\n<article><strong>Prototyping and volume<\/strong><span>We support R&amp;D prototyping, small-batch validation and stable volume delivery.<\/span><\/article>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"rg-section rg-content-aside rg-bf33-overview\">\n<div class=\"rg-container rg-content-aside__grid\">\n<div class=\"rg-content-aside__main\">\n<div class=\"rg-prose\">\n<h2>BOROFLOAT\u00ae 33 Material Characteristics<\/h2>\n<p>BOROFLOAT\u00ae 33 is produced with SCHOTT's micro-float process and combines relatively low thermal expansion, high visible-light transmission, good chemical stability and mechanical durability. Float sheet has a stable flat form, making it suitable for viewing windows, optical supports, laboratory components and industrial equipment windows.<\/p>\n<p>Material selection requires confirming operating temperature, wavelength band, thickness, outline and surface requirements together. At the material purchasing stage we can assess cutting, hole positions, edges, lapping and polishing, cleaning and inspection in parallel, reducing later process rework.<\/p>\n<\/p><\/div>\n<figure class=\"rg-bf33-photo\">\n        <img alt=\"BOROFLOAT 33 sheet and plate display\" class=\"rg-prose-image\" src=\"https:\/\/glassubstrate.net\/wp-content\/uploads\/2026\/09\/codex-clipboard-f3c3210b-ece0-429a-869c-d8264b33652f-scaled.jpg\" loading=\"lazy\" decoding=\"async\"\/><figcaption>Machined BF33 frame-shaped glass part sample<\/figcaption><\/figure>\n<\/p><\/div>\n<aside class=\"rg-aside\">\n<h2>Key Material Data<\/h2>\n<ul>\n<li><strong>Glass type<\/strong><br \/>3.3 borosilicate float glass<\/li>\n<li><strong>Coefficient of linear thermal expansion<\/strong><br \/>3.25 \u00d7 10\u207b\u2076 K\u207b\u00b9\uff0820\u2013300\u00b0C\uff09<\/li>\n<li><strong>Density<\/strong><br \/>2.23 g\/cm\u00b3\uff0825\u00b0C\uff09<\/li>\n<li><strong>Refractive index n<sub>d<\/sub><\/strong><br \/>1.471 (587.6 nm, reference value)<\/li>\n<li><strong>Transformation temperature T<sub>g<\/sub><\/strong><br \/>525\u00b0C<\/li>\n<\/ul>\n<\/aside><\/div>\n<\/section>\n<section class=\"rg-specs rg-bf33-specs\">\n<div class=\"rg-container\">\n<div class=\"rg-specs__wrap\">\n<div class=\"rg-specs__head\">\n<div>\n<div class=\"rg-eyebrow\">Material Data Sheet<\/div>\n<h2>BF33 Basic Performance Parameters<\/h2>\n<\/div>\n<p><a class=\"rg-spec-download\" href=\"https:\/\/www.schott.com\/-\/media\/project\/onex\/products\/b\/borofloat\/downloads\/schott-borofloat-technical-data-sheet-english-26032019.pdf?rev=aa66d15af04a4ce7994f5e7699350364\" target=\"_blank\" rel=\"noopener\">Download the official SCHOTT technical data PDF \u2193<\/a><\/div>\n<table>\n<tbody>\n<tr>\n<th scope=\"row\">Material type<\/th>\n<td>3.3 borosilicate float glass<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Optical properties<\/th>\n<td>Refractive index n<sub>d<\/sub> = 1.471 (587.6 nm); Abbe number \u03bd<sub>e<\/sub> = 65.41; dispersion n<sub>F<\/sub> \u2212 n<sub>C<\/sub> = 71.4 \u00d7 10\u207b\u2074<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Transmission band<\/th>\n<td>Approximately 250\u20132,800 nm; actual transmission varies with thickness and wavelength<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Stress-optical coefficient<\/th>\n<td>4.0 \u00d7 10\u207b\u2076 mm\u00b2\/N<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Coefficient of thermal expansion (CTE)<\/th>\n<td>3.25 \u00d7 10\u207b\u2076 K\u207b\u00b9\uff0820\u2013300\u00b0C\uff09<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Specific heat capacity<\/th>\n<td>0.83 kJ\/(kg\u00b7K)\uff0820\u2013100\u00b0C\uff09<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Thermal conductivity<\/th>\n<td>1.2 W\/(m\u00b7K)\uff0890\u00b0C\uff09<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Glass transformation temperature T<sub>g<\/sub><\/th>\n<td>525\u00b0C<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Maximum operating temperature<\/th>\n<td>Long-term use (\u226510 hours) 450 \u00b0C; short-term use (&lt;10 hours) 500 \u00b0C<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Density<\/th>\n<td>2.23 g\/cm\u00b3\uff0825\u00b0C\uff09<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Young's modulus<\/th>\n<td>64 kN\/mm\u00b2<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Poisson's ratio<\/th>\n<td>0.20<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Knoop hardness<\/th>\n<td>480\uff08HK<sub>0.1\/20<\/sub>\uff09<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Water resistance<\/th>\n<td>HGB 1\uff08ISO 719 \/ DIN 12111\uff09\uff1bHGA 1\uff08ISO 720\uff09<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Acid resistance<\/th>\n<td>Class 1 (DIN 12116)<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Alkali resistance<\/th>\n<td>A 2\uff08ISO 695 \/ DIN 52322\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<div class=\"rg-note\">The values above are typical or reference values from SCHOTT's published technical documentation and are not guaranteed values for finished parts; project acceptance is governed by the material certificate of the purchased batch and the drawing and specification confirmed by both parties.<\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"rg-section rg-bf33-supply\" id=\"supply\">\n<div class=\"rg-container\">\n<div class=\"rg-sectionhead\">\n<div class=\"rg-eyebrow\">Purchasing Specifications<\/div>\n<h2>BF33 sheet specifications and available thicknesses<\/h2>\n<p>Specifications presented together so purchasing and engineering staff can confirm them quickly.<\/p>\n<\/p><\/div>\n<div class=\"rg-bf33-supply-grid\">\n<div class=\"rg-bf33-supply-copy\">\n<div class=\"rg-bf33-stock-summary\">\n<div><span>Sheet size<\/span><strong>1,150 \u00d7 850 mm<\/strong><\/div>\n<div><span>Thicknesses available on request<\/span><strong>0.40\u201325.40 mm<\/strong><\/div>\n<\/p><\/div>\n<div class=\"rg-bf33-thickness-groups\" aria-label=\"BF33 available thicknesses, in millimetres\">\n<div><strong>Thin-sheet specifications<\/strong><\/p>\n<p>0.40 \u00b7 0.50 \u00b7 0.60 \u00b7 0.70 \u00b7 1.00 \u00b7 1.10 \u00b7 1.50 \u00b7 1.75<\/p>\n<\/div>\n<div><strong>Common sheet thicknesses<\/strong><\/p>\n<p>2.00 \u00b7 2.25 \u00b7 2.75 \u00b7 3.30 \u00b7 3.80 \u00b7 5.00 \u00b7 5.50 \u00b7 6.50 \u00b7 7.50 \u00b7 8.00 \u00b7 9.00<\/p>\n<\/div>\n<div><strong>Thick-sheet specifications<\/strong><\/p>\n<p>11.00 \u00b7 13.00 \u00b7 15.00 \u00b7 16.00 \u00b7 18.00 \u00b7 19.00 \u00b7 20.00 \u00b7 21.00 \u00b7 25.40<\/p>\n<\/div><\/div>\n<p class=\"rg-note\">All thicknesses above are in mm. Stock quantity, tolerances, cut sizes and lead times are confirmed at the enquiry stage.<\/p>\n<\/p><\/div>\n<figure class=\"rg-bf33-supply-media\">\n        <img src=\"https:\/\/glassubstrate.net\/wp-content\/uploads\/2026\/09\/83c1151e-e8c3-4f5b-8100-23ad3535ade3.png\" alt=\"\u4e0d\u540c\u539a\u5ea6\u7684 BOROFLOAT 33 \u73bb\u7483\u677f\u6750\" loading=\"lazy\" decoding=\"async\"\/><figcaption>BOROFLOAT\u00ae 33 sheet thickness display<\/figcaption><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"rg-section rg-bf33-capability\">\n<div class=\"rg-container\">\n<div class=\"rg-split\">\n<div class=\"rg-split__media\">\n        <img alt=\"BF33 \u73bb\u7483\u7cbe\u5bc6\u5207\u5272\u52a0\u5de5\u73b0\u573a\" src=\"https:\/\/glassubstrate.net\/wp-content\/uploads\/2026\/08\/bf91eb44d4825ebae032937266834fbf-scaled.jpg\" loading=\"lazy\" decoding=\"async\"\/>\n      <\/div>\n<div class=\"rg-split__copy\">\n<div class=\"rg-eyebrow\">Material + Processing<span><\/span><\/div>\n<h2>From BF33 sheet to assembly-ready glass parts<\/h2>\n<p>Beyond material supply, we can provide precision glass cutting, CNC cutting, waterjet cutting, CNC engraving, drilling, profile edge grinding, glass wafer processing, lapping and double-sided polishing to drawing, together with cleaning and dimensional and appearance inspection.<\/p>\n<div class=\"rg-badges\"><span class=\"rg-badge\">Precision Cutting<\/span><span class=\"rg-badge\">CNC engraving<\/span><span class=\"rg-badge\">Drilling<\/span><span class=\"rg-badge\">Profile edge grinding<\/span><span class=\"rg-badge\">Glass Wafers<\/span><span class=\"rg-badge\">Double-sided polishing<\/span><\/div>\n<h3>Typical Precision Processing Capability<\/h3>\n<ul class=\"rg-bf33-capability-list\">\n<li>Double-sided fine-polished substrates: typical thickness 0.10\u20133.00 mm, thickness tolerance assessable to \u00b15 \u03bcm, TTV assessable to less than 2 \u03bcm.<\/li>\n<li>Single-side ground substrates: typical thickness 0.10\u20133.00 mm, roughness assessable to 0.10\u20130.40 \u03bcm.<\/li>\n<li>Precision-cut bars and lids: minimum width assessable to 1 mm, dimensional tolerance assessable to \u00b10.03 mm, chipping assessable to less than 0.10 mm.<\/li>\n<\/ul>\n<p class=\"rg-caption\">Processing capability must be confirmed for manufacturability against dimensions, thickness, quantity, hole positions, edges and surface requirements.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"rg-section rg-bf33-gallery-section\">\n<div class=\"rg-container\">\n<div class=\"rg-sectionhead\">\n<h2>BF33 volume processing in practice<\/h2>\n<p>Shown to illustrate volume processing, work-in-progress and parts awaiting inspection; actual parts follow the customer drawing.<\/p>\n<\/div>\n<div class=\"rg-bf33-gallery\">\n<figure><img alt=\"BF33 glass lapping and polishing workshop\" src=\"https:\/\/glassubstrate.net\/wp-content\/uploads\/2026\/08\/dji_mimo_20260901_102612_20260901102610_1788233383702_photo-scaled.jpg\" loading=\"lazy\" decoding=\"async\"\/><figcaption>BF33 glass lapping and polishing<\/figcaption><\/figure>\n<figure><img alt=\"BF33 \u73bb\u7483\u6253\u5b54\u4e0e\u5f02\u5f62\u52a0\u5de5\u6837\u54c1\" src=\"https:\/\/glassubstrate.net\/wp-content\/uploads\/2026\/08\/a79318a2bd7dd78c985d07c8521098ac.jpg\" loading=\"lazy\" decoding=\"async\"\/><figcaption>Drilled and profiled glass parts<\/figcaption><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"rg-section rg-card-carousel\" data-card-carousel=\"\">\n<div class=\"rg-container\">\n<div class=\"rg-sectionhead\">\n<h2>Precision processing services available<\/h2>\n<\/div>\n<\/div>\n<div class=\"rg-card-carousel__viewport\">\n<div class=\"rg-card-carousel__track\" data-track=\"\">\n<article class=\"rg-card-carousel__item\"><img decoding=\"async\" alt=\"\" src=\"..\/assets\/images\/service-cutting.svg\"\/><\/p>\n<div class=\"rg-card-carousel__body\">\n<h3>Precision Glass Cutting<\/h3>\n<p>\u63a7\u5236\u5c3a\u5bf8\u3001\u8f6e\u5ed3\u4e0e\u5d29\u8fb9\uff0c\u4e3a\u540e\u7eed\u629b\u5149\u548c\u88c5\u914d\u5efa\u7acb\u7a33\u5b9a\u57fa\u51c6\u3002<\/p>\n<p><a class=\"rg-link\" href=\"\/en\/glass-cutting.html\/\">\u67e5\u770b\u670d\u52a1 <span>\u2197<\/span><\/a><\/div>\n<\/article>\n<article class=\"rg-card-carousel__item\"><img decoding=\"async\" alt=\"\" src=\"..\/assets\/images\/service-polishing.svg\"\/><\/p>\n<div class=\"rg-card-carousel__body\">\n<h3>Glass Polishing<\/h3>\n<p>\u9488\u5bf9\u5e73\u9762\u3001\u5e73\u884c\u5ea6\u3001\u8868\u9762\u7c97\u7cd9\u5ea6\u548c\u5916\u89c2\u8981\u6c42\u8bbe\u8ba1\u7814\u78e8\u629b\u5149\u8def\u7ebf\u3002<\/p>\n<p><a class=\"rg-link\" href=\"\/en\/glass-polishing.html\/\">\u67e5\u770b\u670d\u52a1 <span>\u2197<\/span><\/a><\/div>\n<\/article>\n<article class=\"rg-card-carousel__item\"><img decoding=\"async\" alt=\"\" src=\"..\/assets\/images\/service-edge.svg\"\/><\/p>\n<div class=\"rg-card-carousel__body\">\n<h3>Edge Grinding &amp; Chamfering<\/h3>\n<p>\u76f4\u8fb9\u3001\u5012\u89d2\u3001\u5706\u89d2\u548c\u8fb9\u7f18\u4fee\u6574\uff0c\u517c\u987e\u88c5\u914d\u5b89\u5168\u4e0e\u8fb9\u7f18\u5f3a\u5ea6\u3002<\/p>\n<p><a class=\"rg-link\" href=\"\/en\/edge-beveling.html\/\">\u67e5\u770b\u670d\u52a1 <span>\u2197<\/span><\/a><\/div>\n<\/article>\n<article class=\"rg-card-carousel__item\"><img decoding=\"async\" alt=\"\" src=\"..\/assets\/images\/service-cleaning.svg\"\/><\/p>\n<div class=\"rg-card-carousel__body\">\n<h3>Cleaning<\/h3>\n<p>\u6839\u636e\u6750\u6599\u548c\u6d01\u51c0\u8981\u6c42\u5b89\u6392\u6e05\u6d17\u3001\u6f02\u6d17\u3001\u5e72\u71e5\u4e0e\u5305\u88c5\u3002<\/p>\n<p><a class=\"rg-link\" href=\"\/en\/cleaning.html\/\">\u67e5\u770b\u670d\u52a1 <span>\u2197<\/span><\/a><\/div>\n<\/article>\n<article class=\"rg-card-carousel__item\"><img decoding=\"async\" alt=\"\" src=\"..\/assets\/images\/service-inspection.svg\"\/><\/p>\n<div class=\"rg-card-carousel__body\">\n<h3>\u73bb\u7483\u68c0\u9a8c<\/h3>\n<p>\u5c3a\u5bf8\u3001\u5e73\u9762\u3001\u8868\u9762\u7f3a\u9677\u548c\u6d01\u51c0\u5ea6\u6309\u9879\u76ee\u9a8c\u6536\u9879\u8fdb\u884c\u68c0\u67e5\u3002<\/p>\n<p><a class=\"rg-link\" href=\"\/en\/inspection.html\/\">\u67e5\u770b\u670d\u52a1 <span>\u2197<\/span><\/a><\/div>\n<\/article><\/div>\n<p>    <button aria-label=\"Previous item\" class=\"rg-card-carousel__prev\" data-card-prev=\"\">\u2039<\/button><button aria-label=\"Next item\" class=\"rg-card-carousel__next\" data-card-next=\"\">\u203a<\/button>\n  <\/div>\n<\/section>\n<section class=\"rg-section rg-bf33-applications\">\n<div class=\"rg-container\">\n<div class=\"rg-sectionhead\">\n<div class=\"rg-eyebrow\">Typical Applications<\/div>\n<h2>Projects Suited to BF33<\/h2>\n<p>Selection still needs to consider temperature variation, load, optical band, chemical environment and downstream processing requirements.<\/p>\n<\/div>\n<div class=\"rg-bf33-usecases\">\n<article><strong>Industrial viewing windows<\/strong><span>Equipment sight glasses, furnace viewing and transparent windows requiring thermal shock resistance.<\/span><\/article>\n<article><strong>Optical and sensing structures<\/strong><span>Optical supports, cover plates, protective windows and structural parts needing a stable flat sheet.<\/span><\/article>\n<article><strong>Laboratory glass components<\/strong><span>Sample stages, reaction viewing windows and components for chemically demanding environments.<\/span><\/article>\n<article><strong>Precision substrates and packaging<\/strong><span>Precision glass substrates for optical communications and sensors, processed to drawing.<\/span><\/article>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"rg-section rg-bf33-faq\" id=\"faq\">\n<div class=\"rg-container\">\n<div class=\"rg-sectionhead\">\n<div class=\"rg-eyebrow\">Purchasing FAQ<\/div>\n<h2>Frequently asked questions about buying BF33<\/h2>\n<\/div>\n<div class=\"rg-bf33-faq-list\">\n<details open>\n<summary>Can you provide an original manufacturer material certificate for BF33?<\/summary>\n<p>Yes. Genuine BF33 material can be supplied with a material certificate and batch traceability documents per purchasing project; the exact documents are confirmed with the ordered specification and batch.<\/p>\n<\/details>\n<details>\n<summary>Which thicknesses of BF33 are available?<\/summary>\n<p>Thicknesses currently available on request span 0.40\u201325.40 mm, covering the 28 thicknesses listed on this page. Stock quantity, standard sheet sizes, tolerances and lead times are confirmed item by item by thickness.<\/p>\n<\/details>\n<details>\n<summary>Do you support small-batch BF33 prototyping?<\/summary>\n<p>Yes \u2014 R&amp;D prototyping, small-batch validation and volume delivery. Please provide the material grade, dimensions, quantity and key acceptance requirements so we can assess material yield and process route.<\/p>\n<\/details>\n<details>\n<summary>Can BF33 be precision processed to drawing?<\/summary>\n<p>Yes. We can assess cutting, CNC engraving, drilling, profile edge grinding, wafer processing, lapping, double-sided polishing, cleaning and inspection.<\/p>\n<\/details>\n<details>\n<summary>What information is needed for an enquiry?<\/summary>\n<p>Please provide thickness, length and width or outline, quantity, tolerances, hole positions, edge condition, surface quality, clean packaging, application and required lead time; include a drawing if available.<\/p>\n<\/details><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"rg-cta-band\" id=\"quote\">\n<div class=\"rg-container rg-cta-band__inner\">\n<div>\n<h2>Put the material specification and processing requirements in one enquiry<\/h2>\n<p>Provide the material grade, dimensions, quantity and key acceptance items, and we will match cutting, polishing, cleaning and inspection to the material's characteristics.<\/p>\n<\/div>\n<div class=\"rg-cta-band__actions\"><a class=\"rg-btn rg-btn--outline\" href=\"mailto:jerry-ton@lightingglass.cn?subject=%E7%8E%BB%E7%92%83%E5%9B%BE%E7%BA%B8%E8%AF%A2%E4%BB%B7&amp;body=%E8%AF%B7%E9%99%84%E4%B8%8A%E5%9B%BE%E7%BA%B8%EF%BC%8C%E5%B9%B6%E8%AF%B4%E6%98%8E%E6%9D%90%E6%96%99%E7%89%8C%E5%8F%B7%E3%80%81%E5%8E%9A%E5%BA%A6%E3%80%81%E5%B0%BA%E5%AF%B8%E3%80%81%E5%85%AC%E5%B7%AE%E3%80%81%E6%95%B0%E9%87%8F%E3%80%81%E8%A1%A8%E9%9D%A2%2F%E8%BE%B9%E7%BC%98%E8%A6%81%E6%B1%82%E3%80%81%E7%94%A8%E9%80%94%E5%92%8C%E4%BA%A4%E6%9C%9F%E3%80%82\">Email Your Drawings<\/a><a class=\"rg-btn rg-btn--outline\" href=\"https:\/\/glassubstrate.net\/en\/about\/#quote\">Contact the Engineering Team<\/a><\/div>\n<\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>A 3.3 borosilicate float glass with low thermal expansion and high transparency.<\/p>","protected":false},"featured_media":129,"menu_order":11,"template":"","class_list":["post-17","rg_material","type-rg_material","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - 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