NB/T 47018.4-2022_English: PDF (NB/T47018.4-2022)
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Technical conditions for ordering welding materials for pressure equipment - Part 4: Submerged arc welding wire and flux
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NB/T 47018.4-2022
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NB/T 47018.4-2017 | English | 165 |
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Technical permission of welding materials for pressure equipment. Section 4: Electrodes and fluxes for submerged arc welding
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NB/T 47018.4-2017
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NB/T 47018.4-2011 | English | 359 |
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Technical permission of welding materials for pressure equipment. Section 4: Electrodes and fluxes for submerged arc welding
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NB/T 47018.4-2011
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Standard ID | NB/T 47018.4-2022 (NB/T47018.4-2022) | Description (Translated English) | (Ordering technical conditions for welding consumables for pressure equipment - Part 4: Submerged arc welding steel wire and flux) | Sector / Industry | Energy Industry Standard (Recommended) | Word Count Estimation | 12,141 | Date of Issue | 2022-11-04 | Date of Implementation | 2022-12-31 | Standard ID | NB/T 47018.4-2017 (NB/T47018.4-2017) | Description (Translated English) | Technical permission of welding materials for pressure equipment. Section 4: Electrodes and fluxes for submerged arc welding | Sector / Industry | Energy Industry Standard (Recommended) | Classification of Chinese Standard | J33 | Classification of International Standard | 25.160.10 | Word Count Estimation | 8,837 | Date of Issue | 2017-03-28 | Date of Implementation | 2017-08-01 | Older Standard (superseded by this standard) | NB/T 47018.4-2011 | Quoted Standard | GB/T 2653; GB/T 3965; GB/T 5293-1999; GB/T 12470-2003; GB/T 17854-1999; NB/T 47013.2; NB/T 47014; NB/T 47018.1 | Drafting Organization | Hefei General Machinery Research Institute | Administrative Organization | National Boiler and Pressure Vessel Standardization Technical Committee | Regulation (derived from) | State Energy Bureau Announcement No. 6 of 2017 | Summary | This standard specifies the technical requirements, test methods and product identification of submerged arc welded steel wire and flux. This standard applies to carbon steel welding wire and flux for submerged arc welding of pressure equipment, low alloy steel welding wire and flux, stainless steel welding wire and flux. | Standard ID | NB/T 47018.4-2011 (NB/T47018.4-2011) | Description (Translated English) | Technical permission of welding materials for pressure equipment. Section 4: Electrodes and fluxes for submerged arc welding | Sector / Industry | Energy Industry Standard (Recommended) | Classification of Chinese Standard | J33 | Classification of International Standard | 25.160.10 | Word Count Estimation | 9,956 | Date of Issue | 2011-07-01 | Date of Implementation | 2011-10-01 | Older Standard (superseded by this standard) | JB/T 4747-2002 | Quoted Standard | GB/T 2653; GB/T 5293; GB/T 12470; GB/T 17854; NB/T 47018.1; JB/T 4730.2; YB/T 5092 | Drafting Organization | Hefei General Machinery Research Institute | Administrative Organization | National Standardization Technical Committee Boiler and Pressure Vessel | Regulation (derived from) | ?National Energy Board Announcement 2011 No.3 | Summary | This standard specifies the technical requirements for pressure equipment with steel wire and submerged arc flux. This section applies to pressure equipment submerged arc welding of carbon steel welding wire and flux, low-alloy steel wire and flux, stainless steel wire and flux. |
NB/T 47018.4-2022
NB
ENERGY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 25.160.10
CCS J 33
Replacing NB/T 47018.4-2017
Specification of Welding Materials for Pressure Equipment -
Section 4: Electrodes and Fluxes for Submerged Arc Welding
ISSUED ON: NOVEMBER 4, 2022
IMPLEMENTED ON: DECEMBER 31, 2022
Issued by: National Energy Administration
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative References ... 6
3 Technical Requirements ... 7
4 Test Methods ... 12
5 Product Identification ... 14
Appendix A (Informative) Comparison between Classification of Solid
Electrode/Flux Combination for Submerged Arc Welding and Flux Models in the
2017 Edition ... 15
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1: Rules for the Structure and Drafting of Standardizing Documents.
This Document is Part 4 of NB/T 47018 Technical Permission of Welding Materials for
Pressure Equipment. NB/T 47018 consists of the following parts:
--- Part 1: General Rules of Procurement;
--- Part 2: Electrodes for Steel;
--- Part 3: Steel Electrodes and Rods for Gas Shielded Arc Welding;
--- Part 4: Electrodes and Fluxes for Submerged Arc Welding;
--- Part 5: Stainless-Steel Strip Electrodes and Fluxes for Overlay Welding;
--- Part 6: Aluminum and Aluminum Alloy Welding Wires and Filler Wires;
--- Part 7: Titanium and Titanium Alloy Welding Wires and Filler Wires;
This Document replaced NB/T 47018.4-2017 Technical Permission of Welding Materials for
Pressure Equipment - Section 4: Electrodes and Fluxes for Submerged Arc Welding. Compared
with NB/T 47018.4-2017, the major technical changes of this Document are as follows besides
structural adjustments and editorial modifications:
a) In the normative references, the original GB/T 5293 Carbon Steel Electrodes and Fluxes
for Submerged Arc Welding was renamed as Solid Wire Electrodes, Tubular Cored
Electrodes and Electrode/Flux Combinations for Submerged Arc Welding of Non-Alloy
And Fine Grain Steels; the original GB/T 12470 Low-Alloy Steel Electrodes and Fluxes
for Submerged Arc Welding was renamed as Solid Wire Electrodes, Tubular Cored
Electrodes and Electrode/Flux Combinations for Submerged Arc Welding of Creep-
Resisting Steels; the original GB/T 17854 Stainless Steel Electrodes and Fluxes for
Submerged Arc Welding was renamed as Solid Wire Electrodes/Flux Combinations for
Submerged Arc Welding of Stainless Steels; and two standards, GB/T 36034 Solid Wire
Electrodes, Tubular Cored Electrodes and Electrode/Flux Combinations for Submerged
Arc Welding of High Strength Steels and GB/T 36037 Fluxes for Submerged Arc Welding
and Electroslag Welding were added (see the Clause 2 of this Edition);
b) Change the contents of the quality certificate [see b) in 3.1.2 of this Edition; b) in 3.1.2
of the 2017 Edition];
c) Change the specific provisions on the interchangeability of flux batch numbers and
electrode batch numbers in the welding material quality certificate (see 3.1.3, 3.1.4 of
this Edition; 3.1.3 of the 2017 Edition);
Specification of Welding Materials for Pressure Equipment -
Section 4: Electrodes and Fluxes for Submerged Arc Welding
1 Scope
This Document specifies the technical requirements, test methods and product identification of
submerged arc welding steel electrodes, fluxes and electrode-flux combinations.
This Document is applicable to non-alloy steel and fine-grained steel solid electrodes and
electrode-flux combinations for submerged arc welding, heat-resistant steel solid electrodes and
electrode-flux combinations, high-strength steel solid electrodes and electrode-flux
combinations, and stainless-steel solid electrodes and electrode-flux combinations of pressure
equipment.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in 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 2653 Bend test methods on welded joints
GB/T 3965 Methods for determination of diffusible hydrogen in deposited metal
GB/T 5293 Solid wire electrodes, tubular cored electrodes and electrode/flux combinations
for submerged arc welding of non-alloy and fine grain steels
GB/T 12470 Solid wire electrodes, tubular cored electrodes and electrode/flux
combinations for submerged arc welding of creep-resisting steels
GB/T 17854 Solid wire electrodes/flux combinations for submerged arc welding of
stainless steels
GB/T 29713 Wire electrodes, strip electrodes, wires and rods for arc welding of stainless
and heat resisting steels
GB/T 36034 Solid wire electrodes, tubular cored electrodes and electrode/flux
combinations for submerged arc welding of high strength steels
GB/T 36037 Fluxes for submerged arc welding and electroslag welding
NB/T 47013.2 Nondestructive testing of pressure equipment - Part 2: Radiographic testing
NB/T 47013.11 Nondestructive testing of pressure equipment – Part 11: X-ray computed
radiographic testing
NB/T 47014 Welding procedure qualification for pressure equipment
NB/T 47018.1 Technical permission of welding materials for pressure equipment - Part 1:
General rule
3 Technical Requirements
3.1 General provisions
3.1.1 In addition to complying with the provisions of GB/T 5293, GB/T 12470, GB/T 17854,
GB/T 36034, GB/T 36037, GB/T29713, the steel electrodes and fluxes for submerged arc
welding of non-alloy steel and fine-grained steel, heat-resistant steel, high-strength steel and
stainless steel for pressure equipment shall also comply with the provisions of NB/T 47018.I
and this Document.
3.1.2 The quality certificate of submerged arc welding materials for pressure equipment shall
include the following contents:
a) The batch number of the flux and the batch number of the combined electrode, as well as
the inspection results of the electrode, flux and the deposited metal after the welding of
the combination;
b) The impurity elements S and P contents of the flux for non-alloy steel, fine-grained steel,
heat-resistant steel, high strength steel and stainless steel, and the metallurgical property
code shall be indicated.
3.1.3 For heat-resistant steel with standard tensile strength of deposited metal no less than 620
MPa, fine-grained steel with standard impact test temperature lower than -70°C, high-strength
steel welding materials with standard impact test temperature lower than -20°C, or at the request
of the purchaser, the batch number of electrode and flux for submerged arc welding shall be the
same as the content of the quality certificate in accordance with 3.1.2. In addition, the batch
number of the same type of electrode and flux supplied by the same welding material
manufacturer can be interchangeable and shall be indicated in the quality certificate.
3.1.4 When the batch number of electrode and/or flux is different from the content of the quality
guarantee and does not meet the requirements of 3.1.3, the ordering organization shall conduct
inspection according to the provisions of the quality guarantee system; and the technical
requirements shall be no lower than those of this Document. Only after passing the inspection,
......
NB/T 47018.4-2017
NB
ENERGY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 25.160.10
J 33
Replacing NB/T 47018.4-2011
Technical Permission of Welding Materials for
Pressure Equipment Section 4: Electrodes and Fluxes
for Submerged Arc Welding
ISSUED ON: MARCH 28, 2017
IMPLEMENTED ON: AUGUST 01, 2017
Issued by: National Energy Administration
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Technical Requirements ... 6
4 Test Methods ... 9
5 Product Marking ... 11
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 4 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 47018.4-2011 Technical Permission of Welding Materials for
Pressure Equipment - Part 4: Electrodes and Fluxes for Submerged Arc Welding.
Compared with NB/T 47018.4-2011, the major technical changes of this Part are as
follows:
--- Add the batch number and inspection requirements of flux and welding wire to
the quality certificate of the welding material;
--- Specify the phosphorus and sulfur content for welding wire and flux;
--- Add F310-HXXX, F316CuL-HXXX, F317-HXXX to the models of stainless-steel
flux;
--- Add the specified lower limit of the elongation after break of the deposited metal
tensile specimen;
--- Allow the use of transverse bending specimens in the bending test; and add the
provisions of increasing the bend diameter for retesting;
--- Delete the provisions of the water content for carbon steel and low-alloy steel
fluxes; and add the provisions for the determination of the diffusible hydrogen
content of deposited metals in submerged arc welding;
--- Delete the original Appendix A " Designations of commonly used steel wire and
filler wire for submerged arc welding for pressure equipment".
This Part was proposed by and under the jurisdiction of National Technical Committee
Technical Permission of Welding Materials for
Pressure Equipment Section 4: Electrodes and Fluxes
for Submerged Arc Welding
1 Scope
This Part of NB/T 47018-2017 specifies the technical requirements, test methods and
product marking of welding wire and flux for submerged arc welding.
This Part is applicable to carbon steel welding wire and flux, low-alloy steel welding
wire and flux, and stainless-steel welding wire and flux for submerged arc welding for
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 2653 Bend Test Methods on Welded Joints
GB/T 3965 Methods for Determination of Diffusible Hydrogen in Deposited Metal
GB/T 5293-1999 Carbon Steel Electrodes and Fluxs for Submerged Arc Welding
GB/T 12470-2003 Low-Alloy Steel Electrodes and Fluxes for Submerged Arc
Welding
GB/T 17854-1999 Stainless Steel Electrodes and Fluxs for Submerged Arc
Welding
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
3.1.1 In addition to complying with the provisions of GB/T 5293-1999, GB/T 12470-
2003, GB/T 17854-1999, the welding wire and flux for carbon steel, low-alloy steel,
stainless steel submerged arc welding for pressure equipment shall also comply with
the provisions of NB/T 47018.1 and this Part.
3.1.2 The quality certificate of welding materials for submerged arc welding for
pressure equipment shall contain the following contents:
a) The batch number of flux and the batch number of matched welding wire, as well
as the inspection results of welding wire inspection, flux inspection and deposited
metal after assembly welding;
b) For carbon steel and low-alloy steel flux, the type of flux (neutral, active) should
be indicated.
3.1.3 The batch number of the welding wire and flux for submerged arc welding for
pressure equipment shall be the same as that of the quality certificate in accordance
with 3.1.2. When the batch number of welding wire and/or flux is different from the
content of the quality certificate, it can be checked according to the quality assurance
system of this organization; and the technical requirements shall be no lower than that
of this Standard; and it can be used for welding the pressure equipment only after
being qualified.
3.2 Welding wire
The carbon steel, low-alloy steel welding wire for submerged arc welding should have
a sulfur content of no more than 0.015% and a phosphorus content of no more than
0.020%; While the stainless-steel welding wires should have a sulfur content of no
more than 0.015% and a phosphorus content of no more than 0.025%.
3.3 Flux
The flux should have a sulfur content of no more than 0.035% and a phosphorus
content of no more than 0.040%.
3.4 Chemical composition of deposited metal of submerged arc welding
materials
After the welding wire and flux for commonly used submerged arc welding of pressure
equipment are welded, see Table 1 for the sulfur and phosphorus content of the
deposited metal.
......
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