GB/T 14978-2008 PDF English
US$85.00 · In stock · Download in 9 secondsGB/T 14978-2008: Continuously hot-dip aluminum-zinc alloy coated steel sheet and strip Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Obsolete GB/T 14978: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 14978-2008 | English | 85 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Continuously hot-dip aluminum-zinc alloy coated steel sheet and strip
| Obsolete |
| GB/T 14978-1994 | English | 279 |
Add to Cart
|
3 days
|
Continual hot-dip aluminium zinc silicon alloy coated steel strips and sheets
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 14978-2008
GB/T 14978-2008: Continuously hot-dip aluminum-zinc alloy coated steel sheet and strip---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/GBT14978-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 14978-1994
Continuously Hot-dip Aluminum-zinc Alloy
Coated Steel Sheet and Strip
Issued on. SEPTEMBER 11, 2008
Implemented on. MAY 1, 2009
Jointly issued by. Administration of Quality Supervision, Inspection and
Quarantine (AQSIQ) of the People's Republic of China;
Standardization Administration (SAC) of the People's
Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 7
4 Classification and Code... 7
5 Ordering Information... 9
6 Dimension, Appearance, Weight and Permissible Deviation... 9
7 Technical Requirements... 10
8 Inspection and Test... 14
9 Packaging, Marking and Quality Certificate... 15
10 Value Rounding... 15
11 Approximate Comparison Between Domestic and Foreign Designations... 15
Appendix A (Normative) Permissible Deviation of Dimension and Appearance of
Steel Sheets and Strips... 16
Appendix B (Normative) Calculation Method for Theoretical Weight... 21
Appendix C (Informative) Chemical Composition of Steels... 22
Appendix D (Informative) Approximate Comparison Between Domestic and Foreign
Designations... 23
1 Scope
This Standard specifies the terms and definitions, classification and code, size,
appearance, weight, technical requirements, inspection and test as well as package,
mark and quality certificate of continuously hot-dip aluminum-zinc alloy coated steel
sheet and strip (hereinafter referred to as "steel sheet and strip").
This Standard is applicable to the steel sheet and strip with thickness of
0.30mm~3.0mm mainly used for building, home appliances, electronics and
automobile industry.
2 Normative References
The following standards contain provisions which, through reference in this text,
constitute the provisions of this Standard. For the dated reference, the subsequent
amendments (excluding corrigendum) or revisions of these publications do not apply.
However, all parties who enter into an agreement according to this Standard are
encouraged to study whether the latest edition of these documents is applicable. For
undated references, the latest edition of the document referred to applies.
GB/T 223.5 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Reduced Molybdosilicate Spectrophotometric Method for the
Determination of Acid-soluble Silicon Content
GB/T 223.16 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Chromotropic Acid Photometric Method for the Determination of
Titanium Content
GB/T 223.17 Methods for Chemical Analysis of Iron, Steel and Alloy - The
Diantipyrylmethane Photometric Method for the Determination of
Titanium Content
3 Terms and Definitions
For the purpose of this Standard, the following terms and definitions apply.
3.1
Hot-dip aluminum-zinc alloy coating
Coating produced in continuously hot-dip aluminum-zinc production line and made of
aluminum-zinc alloy; mass fraction of aluminum in coating is about 55%; mass
fraction of silicon is about 1.6%; other ingredient is zinc.
4 Classification and Code
4.1 Designation naming method
The code of steel sheets and strips consist of product use code, steel grade character
(or serial number), steel grade characteristic (if any), hot-dip code (D) and coating
type code; hot-dip code (D) and coating type code are connected with "+". Detailed
provisions are as follows.
4.1.1 Use code
a) DX. the first letter D represents flat steels for cold forming; if the second letter is
X, it represents that there is no requirement for the rolled condition of base-plate;
if the second letter is C, it represents that cold-rolled base-plate is required; if
the second letter is D, it represents that hot-rolled base-plate is required;
b) S. represents structural steels.
4.2 Designation naming examples
4.3 The designation of steel sheets and strips AND the steel grade characteristic
shall be in accordance with those specified in Table 1.
4.4 The surface quality classification of steel sheets and strips shall be in
accordance with those specified in Table 2.
5 Ordering Information
The user shall provide the following information when ordering.
6 Dimension, Appearance, Weight and Permissible Deviation
6.1 The nominal dimension of steel sheet and strip shall be in accordance with those
specified in Table 4.After negotiation between the Supplier and the Purchaser, other
dimensions and specifications of steel sheets and strips may also be provided.
6.3 The dimension, appearance permissible deviation of steel sheet and strip shall
meet the provisions in Appendix A.
6.4 Steel plate is generally delivered according to the theoretical weight or actual
weight; the calculation method of theoretical weight shall meet provisions in Appendix
B. Steel strip shall generally be delivered according to actual weight.
7 Technical Requirements
7.1 Chemical composition
Reference values of chemical composition (smelting analysis) are detailed in
Appendix C. If the Purchaser has any requirement for chemical composition, it shall
be negotiated in ordering.
7.2 Smelting method
The steels for steel sheets and strips shall be smelted by oxygen converter or electric
furnace; unless otherwise specified, the smelting method shall be chosen by the
Supplier.
7.4 Mechanical property
7.4.1 The mechanical property of steel sheets and strips shall be in accordance with
those specified in Tables 5 and Table 6.Unless otherwise specified, the tensile
sample shall be coated.
7.5 Tensile strain marks
For DX51D+Z, DX51D+ZF, DX52D+Z and DX52D+ZF steel sheets and strips in Table
5, it shall be guaranteed that no stretcher strain marks appear in use within 1 month
after manufacturing; for steel sheets and strips with other designations in Table 5, it
shall be guaranteed that no tensile strain marks appear in use within 6 months after
manufacturing. For steel sheet and strip specified in Table 6, its tensile strain marks
shall not be required.
7.6 The coating adhesiveness shall be tested by proper test method which is subject
to the choice of the Supplier.
7.7 Coating weight
7.7.1 The scope of supplied nominal coating weight is 60g/m2~200g/m2.After
negotiation between the Supplier and the Purchaser, other coating weight can also be
provided.
7.8 Coating surface structure
7.8.1 The coating surface structure of steel sheets and strips shall be in accordance
with those specified in Table 8.
7.9 Surface treatment
7.10 Surface quality
7.10.1 The surface of steel sheets and strips shall be free from defects such as skip
plating, fall-off coating and visible cracks that affect their use. Tiny zinc coating cracks
and white edges are allowed to exist on the sides of non-trimmed steel strips.
8 Inspection and Test
8.1 The inspection item, sample quantity, sampling method, sampling position and
test method of each batch of steel sheets and strips shall be in accordance with those
specified in Table 10.
8.2 The surface quality of steel sheets and strips shall be inspected by naked eyes.
8.5 The re-inspection of steel sheets and strips shall be in accordance with those
specified in GB/T 17505.
9 Packaging, Marking and Quality Certificate
Packaging, marking and quality certificate of steel sheets and strips shall meet those
specified in GB/T 247.If the Purchaser has any requirement for packaging, it shall
negotiate with the Supplier while ordering.
10 Value Rounding
The value rounding shall be carried out according to the requirements of GB/T 8170.
11 Approximate Comparison Between Domestic and Foreign Designations
Approximate comparison between designations in this Standard and foreign
standards is detailed in Appendix D.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 14978-2008 be delivered?Answer: The full copy PDF of English version of GB/T 14978-2008 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/T 14978-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 14978-2008_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/T 14978-2008 -- 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/T 14978-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14978-2008 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/T 14978-2008?A step-by-step guide to download PDF of GB/T 14978-2008_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/T 14978-2008".
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
|