1.0.1 This Code is developed with a view to ensuring the quality of field equipment and industrial metal pipe welding engineering for project construction.
1.0.2 This code is applicable to the construction and acceptance of welding engineering by manual electric arc welding, argon arc welding, carbon dioxide gas arc welding, submerged arc welding and oxyacetylene welding in the material of carbon steel, alloy steel, aluminum and its alloy, copper and its alloy, industrial grade pure titanium as well as nickel and its alloy.
1.0.3 This code is no applicable to the welding engineering of boilers and pressure vessels to be assembly welded at the construction site.
1.0.4 The safety technology and labor protection for welding engineering shall comply with relevant provisions of the state’s current guidelines, policies, laws and legislations.
1.0.5 In addition to this code, the construction of welding engineering shall be in compliance with the provisions of the state’s current relevant standards and codes.
TABLE OF CONTENTS 1 General 2 General 3 Materials 4 Welding Procedure Qualification Test 4.1 General Provisions 4.2 Regulations for Procedure Qualification 4.3 Test and Qualification 5 Welders Examination 5.1 General Provisions 5.2 Content and Method of Operating Technique Examination 5.3 Assessment of Examination Test Pieces 6 Welding of Carbon Steel and Alloy Steel 6.1 General Provisions 6.2 Preparations prior to welding 6.3 Welding process requirements 6.4 Prior weld Preheating and post weld heat treatment 7 Welding of Aluminum and Aluminum Alloy 7.1 General Note 7.2 Preparation before welding 7.3 Welding procedure requirement 8 Welding of Copper and Copper Alloy 8.1 General Note 8.2 Preparation before welding 8.3 Welding procedure requirement 9 Welding of Industrial Pure Titanium 9.1 General Note 9.2 Preparation before welding 9.3 Welding Procedure 10 Welding of nickel and it alloy 10.1 General Note 10.2 Preparation before welding 10.3 Welding procedure requirement 11 Welding Inspection 11.1 Inspection before welding 11.2 Inspection during welding 11.3 Inspection after welding 11.4 Acceptance and hand over of welding Appendix A Form of PQR and WPS Appendix B Welder examination record and registration form of result as well as welder certificate Appendix C Groove Pattern and Size of Weldments Appendix D Selection of Welding Materials Appendix E X-ray Detect to Weld Seam of Aluminum and Aluminum Alloy Appendix F X-ray Test of weld of industrial pure titanium Appendix G Remarks on Wording in this Code Additional Notes Remarks on Revision
1 General
1.0.1 This Code is developed with a view to ensuring the quality of field equipment and industrial metal pipe welding engineering for project construction.
1.0.2 This code is applicable to the construction and acceptance of welding engineering by manual electric arc welding, argon arc welding, carbon dioxide gas arc welding, submerged arc welding and oxyacetylene welding in the material of carbon steel, alloy steel, aluminum and its alloy, copper and its alloy, industrial grade pure titanium as well as nickel and its alloy.
1.0.3 This code is no applicable to the welding engineering of boilers and pressure vessels to be assembly welded at the construction site.
1.0.4 The safety technology and labor protection for welding engineering shall comply with relevant provisions of the state’s current guidelines, policies, laws and legislations.
1.0.5 In addition to this code, the construction of welding engineering shall be in compliance with the provisions of the state’s current relevant standards and codes.
Contents of GB 50236-1998
TABLE OF CONTENTS
1 General
2 General
3 Materials
4 Welding Procedure Qualification Test
4.1 General Provisions
4.2 Regulations for Procedure Qualification
4.3 Test and Qualification
5 Welders Examination
5.1 General Provisions
5.2 Content and Method of Operating Technique Examination
5.3 Assessment of Examination Test Pieces
6 Welding of Carbon Steel and Alloy Steel
6.1 General Provisions
6.2 Preparations prior to welding
6.3 Welding process requirements
6.4 Prior weld Preheating and post weld heat treatment
7 Welding of Aluminum and Aluminum Alloy
7.1 General Note
7.2 Preparation before welding
7.3 Welding procedure requirement
8 Welding of Copper and Copper Alloy
8.1 General Note
8.2 Preparation before welding
8.3 Welding procedure requirement
9 Welding of Industrial Pure Titanium
9.1 General Note
9.2 Preparation before welding
9.3 Welding Procedure
10 Welding of nickel and it alloy
10.1 General Note
10.2 Preparation before welding
10.3 Welding procedure requirement
11 Welding Inspection
11.1 Inspection before welding
11.2 Inspection during welding
11.3 Inspection after welding
11.4 Acceptance and hand over of welding
Appendix A Form of PQR and WPS
Appendix B Welder examination record and registration form of result as well as welder certificate
Appendix C Groove Pattern and Size of Weldments
Appendix D Selection of Welding Materials
Appendix E X-ray Detect to Weld Seam of Aluminum and Aluminum Alloy
Appendix F X-ray Test of weld of industrial pure titanium
Appendix G Remarks on Wording in this Code
Additional Notes
Remarks on Revision
