|
US$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 18931-2022: Classification of basic dense shaped refractory products containing less than 7% residual carbon
Status: Valid GB/T 18931: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 18931-2022 | English | 169 |
Add to Cart
|
3 days [Need to translate]
|
Classification of basic dense shaped refractory products containing less than 7% residual carbon
| Valid |
GB/T 18931-2022
|
| GB/T 18931-2008 | English | 239 |
Add to Cart
|
3 days [Need to translate]
|
Classification of basic dense shaped refractory products containing less than 7% residual carbon
| Obsolete |
GB/T 18931-2008
|
| GB/T 18931-2002 | English | 239 |
Add to Cart
|
2 days [Need to translate]
|
Classification of basic refractory products containing less than 7% residual carbon
| Obsolete |
GB/T 18931-2002
|
PDF similar to GB/T 18931-2022
Basic data | Standard ID | GB/T 18931-2022 (GB/T18931-2022) | | Description (Translated English) | Classification of basic dense shaped refractory products containing less than 7% residual carbon | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q40 | | Classification of International Standard | 81.080 | | Word Count Estimation | 7,736 | | Date of Issue | 2022-10-12 | | Date of Implementation | 2022-10-12 | | Older Standard (superseded by this standard) | GB/T 18931-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 18931-2022: Classification of basic dense shaped refractory products containing less than 7% residual carbon
---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.
Classification of basic dense shaped refractory products containing less than 7% residual carbon
ICS 81.080
CCSQ40
National Standards of People's Republic of China
Replacing GB/T 18931-2008
Carbon content less than 7%
Classification of Alkaline Dense Shaped Refractory Products
containing less than 7% residual carbon
Released on 2022-10-12
2022-10-12 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
This document replaces GB/T 18931-2008 "Classification of Alkaline Dense Shaped Refractory Products with Residual Carbon Content Less than 7%", and GB/T 18931-
Compared with.2008, except for structural adjustment and editorial changes, the main technical changes are as follows.
a) The name and description of the classification basis, product category, grade, raw material characteristics, and post-processing have been changed (see Chapter 4,.2008 edition
3.1~3.4, 3.6);
b) Changed the chemical analysis requirements (see 4.2, 3.2 of the.2008 edition);
c) Changed the description method of naming (see Chapter 5, 3.7 of the.2008 edition).
This document is modified to adopt ISO 10081-2.2003 "Classification of Dense Shaped Refractory Products Part 2.Alkaline with less than 7% carbon residual
Products".
A chapter "Terms and Definitions" has been added to this document.
The technical differences between this document and ISO 10081-2.2003 and their reasons are as follows.
--- ISO 12677, GB/T 34332 replaced ISO 10058 with normatively quoted GB/T 21114, and added specifications
GB/T 18930 (see Chapter 3) and GB/T 4984, GB/T 5069, GB/T 5070, GB/T 16555 (see
4.2) to adapt to the technical conditions of our country and improve operability;
--- Changed the description of inorganic chemical combination [see 4.5c)], and unified with the definition of "inorganic chemical combination" in ISO 10081-1.
The following editorial changes have been made to this document.
--- Incorporate the errata content of ISO 10081-2.2003/Cor.1.2008, and use vertical
Double lines (‖) are marked;
---Correct MgO≤80 in magnesia-chromium MCr80 in Table 2 to MgO≥80.
Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed and managed by the National Refractories Standardization Technical Committee (SAC/TC193).
This document is drafted by. China Metallurgical Testing and Certification Co., Ltd., Yunnan Pu Nai Kun Steel High Temperature Materials Co., Ltd., Beijing University of Science and Technology, Chongqing Science and Technology Co., Ltd.
Institute of Technology, China Metallurgical Construction Research Institute Co., Ltd., Shandong Luming New Materials Co., Ltd., Metallurgical Industry Information Standard Research Institute.
The main drafters of this document. Zhang Xiuhua, Li Yong, Zhang Wenwen, Qian Yu, Hou Xinmei, Zhu Fajin, Gao Rongli, Chen Junhong, Lu Zhiyan, Wang Enhui,
Chen Gang, Sun Yang, Yang Tao, Zhang Zhengfu, Fu Xiuwen, Wang Xiaoyuan.
This document was first released in.2002, revised for the first time in.2008, and this is the second revision.
Carbon content less than 7%
Classification of Alkaline Dense Shaped Refractory Products
1 Scope
This document specifies the classification and designation of alkaline dense shaped refractory products with a carbon content (mass fraction) of less than 7%.
This document applies to alkaline dense shaped refractory products with a carbon content (mass fraction) of less than 7%.
Note. All products can be covered with metal plates, and all unfired products can be reinforced with metal sheets and/or metal fibers.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document.
GB/T 4984 Chemical analysis methods for zirconium-containing refractories
GB/T 5069 Chemical analysis methods for magnesium-aluminum series refractory materials
GB/T 5070 Chemical analysis methods for chromium-containing refractory materials
GB/T 16555 Chemical analysis methods for refractory materials containing carbon, silicon carbide and nitride
GB/T 18930 Terminology of refractory materials
GB/T 21114 X-ray fluorescence spectrochemical analysis of refractory materials Cast glass method (GB/T 21114-2019,
ISO 12677.2011, MOD)
GB/T 34332 Chemical analysis methods for magnesite and dolomite refractory products (GB/T 34332-2017, ISO 10058-1.2008,
ISO 10058-2.2008, ISO 10058-3.2008, MOD)
3 Terms and Definitions
The terms and definitions defined in GB/T 18930 apply to this document.
4 categories
4.1 Basis for classification
Alkaline dense shaped refractory products with a carbon content of less than 7% should be classified according to the following conditions.
a) type of product;
b) The grade, mainly depends on the magnesium oxide content and the presence or absence of antioxidants;
c) raw material characteristics;
d) combination form;
e) Post-processing.
4.2 Types of products
The following general symbols are used to represent the types of products.
a) Magnesium (M);
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 18931-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 18931-2022_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 18931-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 18931-2022_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+ countriesQuestion 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 [email protected]. 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. Question 5: Should I purchase the latest version GB/T 18931-2022?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18931-2022 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.
|