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GB/T 39011.2-2020 English PDF

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US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39011.2-2020: Mechanical pencils for technical drawings - Part 2: Black leads--Classification and dimensions
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39011.2-2020	239	Add to Cart	3 days	Mechanical pencils for technical drawings - Part 2: Black leads--Classification and dimensions	Obsolete

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Basic data

Standard ID: GB/T 39011.2-2020 (GB/T39011.2-2020)
Description (Translated English): Mechanical pencils for technical drawings - Part 2: Black leads--Classification and dimensions
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y50
Classification of International Standard: 97.180
Word Count Estimation: 6,616
Date of Issue: 2020-07-21
Date of Implementation: 2020-07-21
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39011.2-2020: Mechanical pencils for technical drawings - Part 2: Black leads--Classification and dimensions

---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.
Mechanical pencils for technical drawings--Part 2.Black leads--Classification and dimensions ICS 97.180 Y50 National Standards of People's Republic of China Mechanical drawing pencil Part 2.Classification and size of black lead core (ISO 9177-2.1989,Mechanicalpencils-Part 2.Blackleads- 2020-07-21 released 2020-07-21 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

GB/T 39011 "Technical Drawing Mechanical Pencil" is divided into three parts. ---Part 1.Classification, size, performance requirements and tests; ---Part 2.Classification and size of black lead core; ---Part 3.Black lead core HB lead core bending strength. This part is Part 2 of GB/T 39011. This section was drafted in accordance with the rules given in GB/T 1.1-2009. The translation method used in this section is equivalent to ISO 9177-2.1989 "Machine Pencil Part 2.Classification and Size of Black Lead". The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows. ---GB/T 4457.4-2002 mechanical drawing drawing method drawing line (ISO 128-24.1999, MOD); ---GB/T 17450-1998 technical drawing line (ISO 128-20.1996, IDT); ---GB/T 39011.1-2020 Mechanical drawing pencils for technical drawings Part 1.Classification, dimensions, performance requirements and tests (ISO 9177-1.2016, IDT). This section has made the following editorial changes. ---Modified the standard name; ---Add a footnote under the page to Table 2; ---Added references. This part was proposed by the China National Light Industry Council. This part is under the jurisdiction of the National Pen Standardization Technical Committee (SAC/TC378). Drafting organizations of this section. Harbin Tiantan Lead Core Co., Ltd., Shanghai Pen Industry Research Institute, Shanghai Chenguang Stationery Co., Ltd. the company. The main drafters of this section. Guo Shuxin, Zhang Xiaoliang, Chen Jingqiang, Yao Hezhong. Mechanical drawing pencil Part 2.Classification and size of black lead core

1 Scope

This part of GB/T 39011 specifies the classification and size of the black lead core of mechanical pencils. This section applies to two types of black lead cores. ---Resin lead core (marked with the letter "P"); ---Graphite lead core (marked with the letter "C").

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. ISO 128 (all parts) Technical drawings-Generalprinciplesofrepre- sentation) ISO 9177-1 Mechanical pencils for technical drawings Part 1.Classification, dimensions, performance requirements and tests (Mechanicalpencilsfor technicaldrawings-Part 1.Classification, dimensions, performance requirements and testing)

3 Terms and definitions

The terms and definitions defined in ISO 9177-1 and the following apply to this document. 3.1 Blacklead Containing carbon (such as graphite) and adhesive, the resulting black stitches are erasable solid writing materials. 3.1.1 Resin lead Black lead core with organic polymer as binder. 3.1.2 Graphite lead core ceramiclead Black lead core using clay as a binder. 3.2 Hardnessdegree Indicates that the hardness increases from 6B to 9H, the stitch concentration increases from 9H to 6B, and the median hardness level is the classification level of HB. Note. There is no scientific definition of hardness level.

4 categories

The black lead core should be based on the hardness level (see Table 1), the nominal diameter (see Chapter 5) and the type of the black lead core (ie resin lead or graphite lead) classification. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39011.2-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39011.2-2020_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 39011.2-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39011.2-2020_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.