SH 3502-2000 in English

1.0.1 This code is applicable to construction and acceptance for industrially pure titanium piping (hereinafter referred to as "piping") in petrochemical industrial enterprises with design pressure of 0~ 9.8MPa (gauge pressure) and design temperature of -60~250℃.
1.0.2 Piping construction shall not comply with this code, but shall also comply with "Code for Construction and Acceptance of Industrial Metallic Piping" GB 50235 "Specification for Construction and Acceptance of Hypertoxic and Combustible Medium Piping Engineering in Petrochemical Industry" SH 3501 and "Code for Construction and Acceptance of Field Equipment, Industrial Pipe Welding Engineering" GB 50236.
1.0.3 Piping construction shall comply with design document, when requires revising of design, it shall be affirmed by design department and obtain documentary evidence.
1.0.4 During the piping construction process, it must take effective measures to prevent carbon and iron polluting; it must have special processing instrument and be kept clean. Pressure test and cleaning shall adopt uncontaminated water.
1.0.5 Safety engineering and labor protection for piping construction shall comply with current relevant mandatory rules of law, standards and "Technical Code for Construction Safety in Petrochemical Engineering" SH 3505.

Foreword I
1 General provision
2 Inspection for piping constituents, supporting members and welding material
2.1 Pipe testing
2.2 Inspection for valve and constituent/supporting members of other piping
2.3 inspections for welding material
3 Piping processing and installation
3.1 Pipe incising and groove processing
3.2 Manufacture of bent pipe
3.3 Piping prefabrication
3.4 Piping installation
4 Pipeline welding
4.1 General requirement
4.2 Preparation before welding
4.3 Welding technology
4.4 Welding inspection
4.5 Weld repair
5 Pressure test and sweeping for piping system
5.1 Pressure test for piping system
5.2 Sweeping for piping system
5.3 Leaking test for the piping system
6 Engineering acceptance
Appendix A Chemical Composition, Mechanical Property and Specification Parameters for Parts of Domestic Titanium Piping
Appendix B Reference Data for Titanium Piping Construction
Appendix C Allowable Tensile Stress for Industrially Pure Titanium under Different Temperatures
Explanation of Wording in this Code