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NS-1代表了世界上最高水平的钻杆生产规范和要求高于API Spec 5DP和7规范的要求,是国外油公司特别是北海地区的普遍钻探要求。
NS-1标准包括:
- 10. Material Certification
- 20. Traceability
- 30. Welding Qualifications
- 40. Detection and Acceptance of Surface Imperfections
- 50. Detection and Acceptance of Sub-Surface Imperfections
- 60. Disposition of Defects
- 70. Hardness Testing
- 90. Dimensional Inspection
- 141. Internal Coating and Inspection Specifications for Drill Pipe
- 143. Cold Rolling of Connections
- 150. Impact Testing
- 160. Non-Conformity Procedure
- 170. Boxing-Packing-Marking
- 180. Documentation Package
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