JB/T 5000.3-2007 in English

1 Scope
This part of JB/T 5000 specifies technical requirements, testing method and drawing marking of steel welding parts.
This part is applicable to the steel welding parts welded by methods such as shielded metal arc welding, gas shielded welding and submerged-arc welding.
Where no special requirements are stated in the product drawing, technical document or technical specifications for procurement, all shall meet those specified in this part.

2 Normative References
The following normative documents contain provisions which, through reference in this Part of JB/T 5000, constitute provisions of this Part. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to this Part are encouraged to research whether the latest editions of these references are applied or not. For undated references, the latest edition of the normative document is applicable to this standard.
GB/T 324 Welds-symbolic representation on drawings (GB/T324-1988,eqv ISO 2553:1989)
GB/T 985 Basic Forms and Sizes of Weld Grooves for Gas Welding, Manual Arc Welding and Gas-shielded Arc Welding
GB/T 986 Basic Forms and Sizes of Submerged Arc Weld Grooves
GB/T 2649 Methods of sampling for mechanical properties tests of welded joint
GB/T 2650 Impact Test Methods on Welded Joints
GBTF 2651 Tensile test method on welded joints
GB/T 2652 Tensile Test Methods on Weld and Deposited Metal
GB/T 2653 Methods of Bend and Compression Tests for Welded Joint
GB/T 2654 Methods of Hardness Tests for Welded Joint and Surfacing Metal
GB/T 3323 Radiographic Examination of Fusion Welded Joints in Metallic Materials (GB/T 3323-2005, EN 135:1997, MOD)
GB/T 11345 Method for Manual Ultrasonic Testing and Classification of Testing Results for Ferritic Steel Welds
JB/T 3223 Quality management requirements of welding material
JB/T 4735 Steel Welded Atmospheric Pressure Vessels
JB/T 5000.2 Heavy Mechanical General Techniques and Standards - Part 2: Oxygen cutting workpiece
JB/T 5000.11 Heavy Mechanical General Techniques and Standards - Part 11: Attached piping
JB/T 5000.12 Heavy Mechanical General Techniques and Standards - Part 12: Paint
JB/T 5926 Vibrating stress relief effect-evaluation methods
JB/T 6046 Post-weld heat treatment methods for welded members of carbon steel and low alloy steel
JB/T 6061 Non-destructive testing-Magnetic Particle testing of Welds
JB/T 7949 Weld outer dimensions for steel construction

3 General Requirements
3.1 The manufacturing of welding (weldment) shall meet the requirements of design drawing, process document and this Part.

3.2 The steel type, specification and dimension of the materials (steel plate, section steel and steel pipe etc.) used to manufacture welding shall meet the requirements of design drawing, and material substitution shall be transacted with substitution sheet in accordance with relevant provisions.

3.3 The materials, welding materials (welding rod, welding wire, welding flux, shielding gas etc.) used to manufacture welding entering factory, they may enter the storehouse after being accepted by the quality control division according to the "material pre-working acceptance regulations" of the factory based on the certificate of compliance provided by the supplier, as well as corresponding national (professional) standard and ordering requirements.

Contents
Foreword
1 Scope
2 Normative References
3 General Requirements
4 Preliminary Correction of Steel
5 Molding Bending of Steel
6 Welding Assembly
7 Weld
8 Machining Allowance of Welded Structure Parts
9 Welded Joint and Groove
10 Inspection
11 Drawing Mark