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NB/T 47018.2-2017 PDF English

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NB/T 47018.2-2017: Technical permission of welding materials for pressure equipment - Section 2: Electrodes for steel
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NB/T 47018.2-2017English260 Add to Cart 0-9 seconds. Auto-delivery Technical permission of welding materials for pressure equipment - Section 2: Electrodes for steel Valid
NB/T 47018.2-2011English319 Add to Cart 3 days Technical permission of welding materials for pressure equipment. Section 2: Electrodes for steel Obsolete

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GB/T 41112   GB/T 41116   NB/T 47018.6   

NB/T 47018.2-2017: Technical permission of welding materials for pressure equipment - Section 2: Electrodes for steel


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NB ENERGY INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.160.10 J 33 Replacing NB/T 47018.2-2011 Technical Permission of Welding Materials for Pressure Equipment Section 2: Electrodes for Steel ISSUED ON: MARCH 28, 2017 IMPLEMENTED ON: AUGUST 01, 2017 Issued by: National Energy Administration

Table of Contents

Foreword ... 3 1 Scope ... 6 2 Normative References ... 6 3 Technical Requirements ... 7 4 Bending Test of Deposited Metal ... 14 5 Product Marking ... 15 Appendix A (Informative) Comparison of Electrode Model ... 17

Foreword

NB/T 47018-2017 Technical Permission of Welding Materials for Pressure Equipment can be divided into 5 Parts: --- Part 1: General Rule; --- Part 2: Electrodes for Steel; --- Part 3: Steel Electrodes and Rods for Gas Shielded Arc Welding; --- Part 4: Electrodes and Fluxes or Submerged Arc Welding; --- Part 5: Stainless-Steel Strip Electrodes and Fluxes for Overlay Welding. This Part is the Part 2 of NB/T 47018-2017. This Part was drafted as per the rules specified in GB/T 1.1-2009 Directives for Standardization – Part 1: Structure and Drafting of Standards. This Part revised NB/T 47018.2-2011 Technical Permission of Welding Materials for Pressure Equipment - Part 2: Electrodes for Steel. Compared with NB/T 47018.2-2011, the major technical Changes of this Part are as follows: --- According to the provisions of national standards on electrodes of 2012 Version, change the name of GB/T 5117 Carbon Steel Covered Electrodes into Electrodes for Non-Alloy and Fine-Grain Steels; change the name of GB/T 5118 Low Alloy Steel Covered Electrodes into Covered Electrodes for Manual Metal Arc Welding of Creep-Resisting Steels; and newly add GB/T 32533 Covered Electrodes for Manual Metal Arc Welding of High-Strength Steels. --- Reserve 7 electrode models of E4303, E4315, E4316, E5015, E5016, E5018, E5515-G in the electrodes for non-alloy and fine grain steels; and the model formulation of the electrodes is the same as that in the new version of standard, however, there are some changes in the technical requirements. Reserve 5 electrode models, and the corresponding changed models are put into the brackets according to the provisions of new version of standard: E5015-E (E5015-N1), E5016-E (E5016-N1), E5515-E (-40°C) (E5515-N1), E5516-E (E5516-N1), E5515-E (-50°C) (E5515-N3). Add totally 23 electrode models, including E4318, E5516-G, E5518-G (-30°C), E5018-G (-40°C), E5518-G (- 40°C), E5018-1, E5015-G, E5016-G, E5015-N2, E5515-N2, E5018-N2, E5516- N3, E5518-N3, E5515- N5, E5516-N5, E5518-N5, E5015-G (-70°C), E5015-N5, E5016-N5, E5018-N5, E5015-N7, E5016-N7, and E5018-N7. --- Reserve 5 electrode models in the electrodes for creep-resisting steels, and the Technical Permission of Welding Materials for Pressure Equipment Section 2: Electrodes for Steel

1 Scope

This Part of NB/T 47018-2017 specifies the technical requirements, deposited metal bending test and product marking for the steel electrodes. This Part is applicable to the electrodes for non-alloy and fine-grain steels, electrodes for creep-resisting steels, electrodes for high-strength steel, and stainless-steel electrodes used for the pressure equipment.

2 Normative References

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this document. GB/T 983-1995 Stainless Steel Covered Electrodes GB/T 983 Stainless Steel Covered Electrodes GB/T 2653 Methods of Bend and Compression Tests for Welded Joint GB/T 3965 Methods for Determination of Diffusible Hydrogen in Deposited Metal GB/T 5117-1995 Carbon Steel Covered Electrodes GB/T 5117 Covered Electrodes or Manual Metal Arc Welding of Non-Alloy and Fine Grain Steels GB/T 5118-1995 Low Alloy Steel Covered Electrodes GB/T 5118 Covered Electrodes for Manual Metal Arc Welding of Creep-Resisting Steels GB/T 32533 Covered Electrodes for Manual Metal Arc Welding of High-Strength Steels NB/T 47013.2 Non-Destructive Testing of Pressure Equipment - Part 2: Radiographic Testing NB/T 47014 Welding Procedure Qualification for Pressure Equipment NB/T 47018.1 Technical Permission of Welding Materials for Pressure Equipment - Section 1: General Rule

3 Technical Requirements

3.1 General rules In addition to the provisions of GB/T 983, GB/T 5117, GB/T 5118 and GB/T 32533, the steel electrodes for pressure equipment shall also comply with the provisions of NB/T 47018.1 and this Part. Refer to Appendix A for the correspondence between the electrode models in this Part and the models in and other related standards. 3.2 The eccentricity of the electrode 3.2.1 The eccentricity of electrode with a diameter no greater than 2.5mm shall be no greater than 5%; however, the eccentricity of 5% inspected electrodes is allowed to be greater than 5% and no greater than 7%. 3.2.2 The eccentricity of electrode with diameters of 3.2mm and 4.0mm shall be no greater than 4%; however, the eccentricity of 5% inspected electrodes is allowed to be greater than 4% and no greater than 5%. 3.2.3 The eccentricity of electrode with a diameter of no less than 5.0mm shall be no greater than 3%; however, the eccentricity of 5% inspected electrodes is allowed to be greater than 3% and no greater than 4%. 3.3 Chemical composition of deposited metal The sulfur and phosphorus contents of the deposited metal of commonly used steel electrodes for pressure equipment is shown in Table 1. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.