Specification for large seamless steel （规范对于大型无缝钢管）.pdfVIP

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Specification for large seamless steel （规范对于大型无缝钢管）.pdf

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Specification for large seamless steel （规范对于大型无缝钢管）

SPECIFICATION FOR LARGE SEAMLESS STEEL TRANSPORTABLE GAS CONTAINERS SPECIFICATION NUMBER CP1-3AAX ISSUE 1: MAY 1993 CONTENTS 1. SCOPE 2. CERTIFICATE OF COMPLIANCE 3. REFERENCES 4. PERMITTED STEEL 5. IDENTIFICATION OF MATERIAL 6. DEFECTS 7. NECK FOLDS 8. MANUFACTURE 9. WELDING OR BRAZING 10 WALL THICKNESS 11. HEAT TREATMENT 12. THREADED OPENINGS 13. RELIEF DEVICES 14. HYDROSTATIC TESTING 15. DIMENSIONAL TOLERANCES 16. MECHANICAL TESTING 17. ULTRASONIC INSPECTION 18. MARKING APPENDIX 1. INSPECTORS REPORT 1. SCOPE This specification details the requirements for the material, design, construction and testing of seamless steel cylinders not less than 450 kg water capacity and service pressure not less than 125 Bar and not over 266 Bar. These cylinders are permitted for the following non-liquified gases: air, argon, boron triflouride, carbon monoxide, compressed natural gas, ethane, ethylene, helium, hydrogen, methane, neon, nitrogen, and oxygen. 2. CERTIFICATE OF COMPLIANCE The Verification Body shall certify that the manufacture, inspection and testing of the cylinders was carried out in compliance with the requirements of this specification. Note: A suitable form of certificates is shown in Appendix 1. 3. REFERENCES BS5045 part 1 - Specification for seamless steel gas containers above 0.5 litre water capacity. ASTM Standard E8 - American Society for Testing and Materials (tensile testing) and A-388-67- Ultrasonic Inspection. DOT 3AAX - Seamless Steel Cylinders. CGA-C-1 - Compressed Gas Association - Hydrostatic Testing. 4. PERMITTED STEEL Open-hearth, basic oxygen, or electric steel of uniform qualit