| 2 | general purpose industrial valves | 1 | air seal test | Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves GB/T 20173-2013,ISO 14313-2007/Cor 1-2009 11.1 |
| Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves GB/T 20173-2013,ISO 14313-2007/Cor 1-2009 11.1 |
| Specification for Pipeline Valves API Spec 6D-2014(R2015) Annex H3, Annex H4 |
| Specification for Pipeline Valves API Spec 6D-2014(R2015) Annex H3, Annex H4 |
| Petroleum and natural gas industries — Pipeline transportation systems — Subsea pipeline valves ISO 14723-2009 11 |
| Petroleum and natural gas industries — Pipeline transportation systems — Subsea pipeline valves ISO 14723-2009 11 |
| Specification for Subsea Pipeline Valves API Spec 6DSS-2017 10 |
| Specification for Subsea Pipeline Valves API Spec 6DSS-2017 10 |
| Petroleum and natural gas industries — Drilling and production equipment — Wellhead and christmas tree equipment API Spec 6A-2018 7.4.9 |
| Petroleum and natural gas industries — Drilling and production equipment — Wellhead and christmas tree equipment API Spec 6A-2018 7.4.9 |
| Petroleum and natural gas industries — Design and operation of subsea production systems — Part 4: Subsea wellhead and tree equipment GB/T 21412.4-2013,ISO 13628-4-2010/Cor 1-2011, API Spec 17D-2011 5,6.3 |
| Petroleum and natural gas industries — Design and operation of subsea production systems — Part 4: Subsea wellhead and tree equipment GB/T 21412.4-2013,ISO 13628-4-2010/Cor 1-2011, API Spec 17D-2011 5,6.3 |
| Valve Inspection and Testing API 598-2016 5,6 |
| Valve Inspection and Testing API 598-2016 5,6 |
| Industrial valve - Pressure test GB/T 13927-2008 |
| Industrial valve - Pressure test GB/T 13927-2008 |
| Valve Inspection and Testing GB/T 26480-2011 |
| Valve Inspection and Testing GB/T 26480-2011 |
| 2 | hydrostatic test/loop around test | Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves GB/T 20173-2013,ISO 14313-2007/Cor 1-2009 11 |
| Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves GB/T 20173-2013,ISO 14313-2007/Cor 1-2009 11 |
