GB 11614-2022 PDF EnglishUS$275.00 · In stock · Download in 9 seconds
GB 11614-2022: Flat glass Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB 11614: Historical versions
Similar standardsGB 11614-2022: Flat glass---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB11614-2022GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 81.040.20 CCS Q 33 Replacing GB 11614-2009 Flat Glass Issued on. JULY 13, 2022 Implemented on. AUGUST 1, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 4 2 Normative References... 4 3 Terms and Definitions... 4 4 Classification and Grading... 5 5 Requirements... 5 6 Inspection Methods... 10 7 Inspection Rules... 14 8 Marking, Packaging, Transportation and Storage... 16 Appendix A (normative) Bloom Inspection Equipment and Operating Parameters... 181 ScopeThis document specifies the classification and grading, requirements, inspection methods, inspection rules, marking, packaging, transportation and storage of flat glass. This document is applicable to soda-lime-silicate flat glass with a thickness not less than 2 mm and manufactured through various processes. This document is not applicable to patterned glass and wired glass.2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in this text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 1216 External Micrometer GB/T 2680 Glass in Building - Determination of Light Transmittance, Solar Direct Transmittance, Total Solar Energy Transmittance, Ultraviolet Transmittance and Related Glazing Factors GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgement of Limiting Values GB/T 9056 Metal Ruler GB/T 11942 Colorimetric Methods for Color Building Materials GB/T 15764 Standard Terminology of Flat Glass GB/T 22523 Feeler Gauge JB/T 2369 Reading Microscope QB/T 2443-2011 Steel Measuring Tapes3 Terms and DefinitionsWhat is defined in GB/T 15764, and the following terms and definitions are applicable to this document. 3.1 Optical Distortion Optical distortion refers to the defect of distortion presented when observing an object through glass at a certain angle. NOTE. the degree of distortion is expressed by the incident angle (commonly known as zebra angle). 3.2 Spot Faults Spot faults is a general term for defects, such as. air bubbles, inclusions, and spots. 3.3 Edge Defects Edge defects refer to the phenomenon of convex or concave or incomplete glass plate section. NOTE. edge defects include bursting edges, edge bumps, missing corners and beveled edges, etc. 3.4 Thickness Wedge Thickness wedge refers to the difference between the maximum value and the minimum value of thickness of the same glass. 3.5 Bloom Bloom refers to the light interference color presented through visual observation of the lower surface of the glass (during molding, the surface that is in contact with the tin liquid) after the float glass of different thicknesses is heated and cooled for a specified time. 3.6 Spot Distortion Spot distortion refers to spots on the surface of flat glass that cause optical distortion.4 Classification and Grading4.1 In accordance with the attribute of color, it is classified into two types. 4.2 In accordance with different requirements for appearance quality, it is classified into two grades. ordinary flat glass and high-quality processed flat glass.5 Requirements5.1 Overview The inspection items of flat glass, as well as the corresponding clauses of the requirements and inspection methods are shown in Table 1. 5.2 Dimensional deviations Flat glass shall be cut into rectangles, and the dimensional deviations of its length and width shall not exceed those specified in Table 2. 5.3 Diagonal Difference The diagonal difference shall not be greater than 0.2% of the average diagonal length. 5.4 Thickness and Thickness Wedge 5.5 Appearance Quality 5.6 Curvature For ordinary flat glass, the curvature shall not be greater than 0.2%. 5.7 Bloom This inspection is only performed on high-quality processed flat glass produced through the float process. After the test, there shall be no phenomenon of bloom. 5.8 Optical Properties 5.9 Color Uniformity This test is only carried out on body-tinted flat glass. In the same batch of products,6 Inspection Methods6.1 Dimensional Deviations Use a metal ruler with a division value of 1 mm that complies with the stipulations of GB/T 9056 or a steel measuring tape with Grade-1 precision that complies with the stipulations of QB/T 2443-2011 to respectively measure the distance between two parallel sides in the middle of the long and wide sides. The difference between the measured value and the nominal dimension is the dimensional deviation. 6.2 Diagonal Difference Use a steel measuring tape with Grade-1 precision that complies with the stipulations of QB/T 2443-2011 to measure the length of two diagonals of the glass plate. The absolute value of the difference is the diagonal difference. Calculate the percentage of the diagonal difference and the average length of the diagonal. 6.3 Thickness Use a digital display micrometer (or spiral micrometer) with a division value of 0.001 mm that complies with the stipulations of GB/T 1216 to measure five points perpendicular to the pulling direction of the glass plate. at about 15 mm from the edge, respectively take one point inward; equally divide the remaining three points between the two points. The measured value shall take three decimal places. Calculate the difference between the measured values at five points and the clearly stated thickness; compare the maximum value of deviation with Table 3. 6.4 Thickness Wedge In accordance with the method of 6.3, measure five measured values of thickness; calculate the difference between the maximum value and the minimum value. 6.5 Appearance Quality 6.5.1 Spot faults Use a reading microscope with a scale value of 0.01 mm that complies with the stipulations of JB/T 2369 to measure the maximum core size of spot faults. 6.5.2 Concentration of spot faults Use a metal ruler with a division value of 1 mm that complies with the stipulations of GB/T 9056 to measure the minimum spacing between two spot faults and count the number of spot faults of the specified size within a 100 mm circle. 6.5.3 Lines, scratches, and cracks As it is shown in Figure 1.In an environment not affected by external light, vertically place the specimen at a position 0.6 m away from the screen, which is a black matte screen, equipped with several 40 W fluorescent tubes with a spacing of 300 mm. The observer is 0.6 m away from the specimen, and the line of sight is perpendicular to the surface of the specimen. Use a metal ruler with a division value of 1 mm that complies with the stipulations of GB/T 9056 and a reading microscope with a scale value of 0.01 mm that complies with the stipulations of JB/T 2369 to measure the length and width of scratches. 6.5.4 Optical distortion As it is shown in Figure 2.The specimen is perpendicular to the ground in accordance with the pulling direction and placed at a distance of 4.5 m from the screen. The screen has black and white diagonal stripes with uniform brightness. The observer, who is 4.5 m away from the specimen, observes the stripes on the screen through the specimen. Firstly, make the stripes obviously distorted, then, slowly rotate the specimen, until the distortion disappears; record the incident angle at this moment. 6.5.5 Edge defects Use a metal ruler with a division value of 1 mm that complies with the stipulations of GB/T 9056 for measurement. In the case of concave and convex, measure the distance between the edge with the maximum concave or convex and the edge of the plate; when the edge is bursting, measure the distance between the edge with the maximum concave along the plate surface and the edge of the plate; when there is a missing corner, measure the length of the bisector of the original angle; in case of beveled edges, measure the convex of the port. As it is shown in Figure 3. 6.6 Curvature Place the glass plate perpendicular to the horizontal plane; do not apply any external force to distort it. Close to a horizontally stretched steel wire along the glass surface, use a feeler gauge that complies with the stipulations of GB/T 22523 to measure the maximum gap between the steel wire and the glass plate. When the glass is bow-shaped, measure the arch height corresponding to the length of the chord; when the glass is wave-shaped, measure the depth of the trough between the two corresponding peaks. In accordance with Formula (1), calculate the curvature. 6.7 Bloom 6.8 Optical Properties 6.8.1 Visible light transmittance of colorless transparent flat glass Randomly take 3 pieces from a batch of products; cut 1 specimen from each piece. In accordance with the methods specified in GB/T 2680, determine the visible light transmittance and take the average value. For products with a thickness other than the commonly used specifications specified in 5.4.1, firstly, measure the thickness of the specimen in accordance with the methods of 6.3.After rounding off the measured value, take two decimal places. In accordance with the methods specified in GB/T 2680, determine its visible light transmittance. In accordance with Formula (2), calculate the visible light transmittance converted into 5 mm standard thickness and take the average value.7 Inspection Rules7.1 Exit-factory Inspection and Type Inspection 7.1.1 Exit-factory inspection The exit-factory inspection items include. dimensional deviations, diagonal difference, thickness, thickness wedge, appearance quality and curvature. 7.1.2 Type inspection The type inspection items are all items in Chapter 5.Under the following circumstances, type inspection shall be carried out. a) When a new product is put into production or in case of product finalization appraisal; 7.2 Batch and Sampling 7.2.1 Batch Products of the same thickness, same grade, same color, and same specifications constitute one batch. 7.2.2 Sampling 7.3 Determination Rules 7.3.1 Determination rules for single pieces. when carrying out the inspection of dimensional deviations, diagonal difference, thickness, thickness wedge, appearance quality and curvature, if all items of any piece of glass comply with the requirements of the corresponding clauses, then, the piece of glass shall be determined as qualified, otherwise, it shall be determined as disqualified. When there are multiply disqualified items on one piece of glass, then, it shall be determined as a disqualified piece, and shall not be repeatedly counted. 7.3.2 Determination rules for items. compare with the sample size in Table 8, when carrying out the inspection of the items specified in 7.3.1, if under a certain item, the number of disqualified pieces due to the non-conformity with the requirements of the corresponding clauses is less than or equal to the acceptance number in Table 8, it shall be determined as qualified in this inspection item, otherwise, it shall be determined as disqualified in this inspection item. 7.3.3 When inspecting the item of bloom, if none of the 4 pieces of sample presents bloom, then, it shall be determined as qualified in this item. 7.3.4 When inspecting the visible light transmittance of colorless transparent flat glass, if the inspection result complies with the stipulations of 5.8.1, then, it shall be determined as qualified in this item. 7.3.5 When inspecting the transmittance deviation of body-tinted flat glass, if the inspection result complies with the stipulations of 5.8.2, then, it shall be determined as qualified in this item.8 Marking, Packaging, Transportation and Storage8.1 Marking 8.2 Packaging The glass packaging shall make it convenient for loading, unloading and transportation. Protective and anti-mildew measures shall be taken. The quantity of packaging shall be compatible with the packaging mode. 8.3 Transportation During transportation, the packaging shall be prevented from violent shaking, collision, sliding and dumping. During transportation, loading and unloading, there shall be rainproof measures. 8.4 Storage Glass storage shall be well-ventilated and moisture-proof. There shall be rain-proof facilities. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 11614-2022 be delivered?Answer: The full copy PDF of English version of GB 11614-2022 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 11614-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB 11614-2022_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB 11614-2022 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB 11614-2022?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 11614-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.How to buy and download a true PDF of English version of GB 11614-2022?A step-by-step guide to download PDF of GB 11614-2022_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB 11614-2022". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
