Transcription of Welding Pressure Pipeliners and Piping Systems
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Welding Pressure Pipeliners and Piping Systems
Welding Pressure . PIPELINES &. Piping Systems . Procedures and Techniques Table of Contents Introduction ..3. Vertical Down vs. Vertical Up ..3-4. Cross Country pipeline -Vertical Down Welding Joint Preparation ..4. Pipe End Cleaning ..4-5. Welding the Root Pass ..5-6. Current Settings w/Lincoln Engine Driven Welders .6-7. Root Pass Welding ..7. Root Pass Troubleshooting ..7. Techniques for Welding Hot Pass ..8. Techniques for Welding Fill and Cap ..8. Setting the Current etc..8-9. Preventing Cracking ..10. Techniques for X60 etc..10-11. Vertical Down Procedures ..12-13. Electrode Consumption ..14-15. Thin Wall Pipe Welding Procedures ..16-20. Double Ending ..20-21. Flux & Electrode Selection ..21. API Pipe Steel ..22-24. Consumables for Welding Pipe ..25. Consumables for High Strength Pipe ..26. Consumables for SMAW.
CROSS COUNTRY PIPELINE Vertical Down Welding Joint Preparation The joint preparation usually used for cross country pipeline is from API 1104 code. As shown in the figure below, the normal situation is a “penny land, penny gap”, meaning that the land (root face) on the pipe should be ground to approximately the thickness of a penny [1/16 ...
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