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GB/T 30789.7-2015 English PDF

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GB/T 30789.7-2015: Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes in appearance -- Part 7: Assessment of degree of chalking by velvet method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30789.7-2015	114	Add to Cart	3 days	Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes in appearance -- Part 7: Assessment of degree of chalking by velvet method	Valid

Similar standards

GB/T 30789.4 GB/T 30790.2 GB/T 30790.3 GB/T 30789.6 GB/T 30789.8 GB/T 30789.5

Basic data

Standard ID: GB/T 30789.7-2015 (GB/T30789.7-2015)
Description (Translated English): Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes in appearance -- Part 7: Assessment of degree of chalking by velvet method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G50
Classification of International Standard: 87.040
Word Count Estimation: 6,652
Date of Issue: 2015-05-15
Date of Implementation: 2015-10-01
Quoted Standard: ISO 4628-1; ISO 4628-6-1990; ISO 8503-1
Adopted Standard: ISO 4628-7-2003, IDT
Regulation (derived from): National Standard Announcement 2015 No. 15
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Standard specifies a degree of chalking assessment methods, especially for white or other paint coatings and multi-coating system on a rough surface (such as ISO 8503-1 roughness greater than a predetermined roughness comparison specimens G in paragraph 4) chalking rating. The method specified in this coating can also be used to assess and multi-grade powder coating system on a smooth surface, but the method specified in ISO 4628-6 is more suitable. This test method is applicable to mineral coating on the substrate and a multi-coat system.

GB/T 30789.7-2015: Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes in appearance -- Part 7: Assessment of degree of chalking by velvet method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
.. Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 7. Assessment of degree of chalking by velvet method ICS 87.040 G50 National Standards of People's Republic of China Paints and varnishes - Evaluation of degradation of coatings The number and size of defects and appearance Even the degree of change logo Part 7. Method for Evaluation of velvet cloth degree of chalking quantityandsizeofdefects, andofintensityofuniformchangesin appearance-Part 7. Assessmentofdegreeofchalkingbyvelvetmethod (ISO 4628-7.2003, IDT) Issued on. 2015-10-01 2015-05-15 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 30789 "Paints and varnish coating aging rating number and size of the defect and the identity of the extent of uniform changes in appearance." Divided into nine sections. --- Part 1. General and identification systems; --- Part 2. Evaluation of blistering levels; --- Part 3. Evaluation of rust grade; --- Part 4. Evaluation cracking grade; --- Part 5. Evaluation of flaking grade; --- Part 6. Assessment of degree of chalking tape method; --- Part 7. Method for Evaluation of velvet cloth chalking rating; --- Part 8. scribe or other artificial defect assessment and corrosion peeling peripheral level; --- Part 9. Evaluation of filiform corrosion level. This section GB/T Part of 730,789. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses the translation method identical with ISO 4628-7.2003 "number and size of paints and varnishes Evaluation of degradation of coatings defects As well as the appearance of a uniform degree of change identification - Part 7. Method for Evaluation of velvet cloth chalking grade. " Consistency correspondence between this part of international documents and normative references of our files are as follows. GB/T 13288.1 steel surface roughness characteristics - Part 1 before application of paints and spray steel surface treatment after cleaning. for Evaluation of technical requirements and definitions after blast - cleaned steel surface roughness of the surface roughness comparison specimens ISO 's (ISO 8503-1. 1988, IDT). This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee and the pigment coating (SAC/TC5) centralized. This section drafted by. CNOOC Changzhou Paint Chemical Research Institute Co., Ltd., Guangzhou Institute of Materials Co., Ltd., Nanjing production Product Quality Supervision and Inspection Institute, Shenzhen Hirota Decoration Group Co., Ltd., Guangzhou standard Geda laboratory equipment supplies Limited. The main drafters of this section. Zhang Ping, Wen Jing, Fu Rong Jin, Li Shaojiang, Wang Chongwu. Paints and varnishes - Evaluation of degradation of coatings The number and size of defects and appearance Even the degree of change logo Part 7. Method for Evaluation of velvet cloth degree of chalking

1 Scope

This section GB/T 30789 requirements, a chalking grade evaluation method, especially for white on a rough surface or other color Lacquer coating and multi-coating system (for example, paragraph 4 of roughness greater than the roughness comparison specimens G ISO 8503-1 defined in) degree of chalking assessment. The method specified in this standard can also be used to assess coating and multi-coating system of degree of chalking on the smooth surface, but the provisions of ISO 4628-6 The method is more suitable. This test method is applicable to the mineral substrate coating and multi-coating system, such as. fiber cement boards, bricks, concrete and mortar bottom, measuring Test is not affected by the surface structure. Experienced operators using this method is very effective and can be used for laboratory and field evaluation. Note 1. When the technical specifications stated with reference to this section, the test conditions (including aging method and substrate) agreed by all relevant parties. Note 2. This section provides a relative level evaluation method, therefore, does not apply to the agreement. Table 1 Note. ISO 4628-1 defines coatings for aging defect number and size of uniform changes in appearance as well as the degree of identification, assessment and overview of the General System. The assessment system is particularly suitable for general types of defects and damage caused by aging, such as color changes, such as yellowing.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. The number and size of the ISO 4628-1 Paints and varnishes - Evaluation of degradation of coatings defects and uniformity of appearance change logo Part 1. General and identification system (Paintsandvarnishes-Evaluationofdegradationofcoatings-Designation ofquantityandsizeofdefects, andofintensityofuniformchangesinappearance-Part 1. Generalin- troductionanddesignationsystem) ISO 4628-6. the number and size of uniform changes in appearance as well as the extent of 1990 Paints and varnishes - Evaluation of degradation of coatings defects Logo Part 6. Assessment of degree of chalking tape method (Paintsandvarnishes-Evaluationofdegradationofpaintcoat- ings-Designationofintensity, quantityandsizeofcommontypesofdefect-Part 6. Ratingofdegree ofchalkingbytapemethod) Steel surface roughness characteristics ISO 8503-1 application of paints and related products - steel surfaces clean up after the blast Part 1. Technical requirements for the assessment after abrasive blast cleaned steel surface roughness of ISO surface profile comparators and definitions (Preparationofsteelsubstratesbeforeapplicationofpaintsandrelatedproducts-Surfaceroughness characteristicsofblast-cleanedsteelsubstrates-Part 1. SpecificationsanddefinitionsforISO surface profilecomparatorsfortheassessmentofabrasiveblast-cleanedsurfaces)

3 Terms and Definitions

The following terms and definitions apply to this document. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 30789.7-2015_English be delivered?

Answer: Upon your order, we will start to translate GB/T 30789.7-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 30789.7-2015_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 30789.7-2015_English will be deemed to be sold to your employer/organization who actually pays 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+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.