API 5L X65 steel pipes with a 17.5mm wall thickness and 762mm in outer diameter were welded using an orbital automatic welding process. Flux Cored Arc Welding (FCAW) and Gas Tungsten Arc Welding (GTAW) consumables were utilized to evaluate automatic the welding process. Manual welds were deposited using GTAW with ER70S-G filler metal for the root pass and Shielded Metal Arc Welding (SMAW) with low hydrogen E9016-G electrode for the remaining passes. Charpy impact test, CTOD (Crack Tip Opening Test) test and micro-hardness test on the weld metal were carried out and the effects of weld metal composition and microstructure on the weld metal toughness were investigated. The filler metals that have superior fracture toughness were E80T1-K2 and E71T-1 of FCAW process and ER80S-G of GTAW process. The filler metals that have proper hardness were E80T1-K2 and E71T-1 of FCAW process.
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2000 3rd International Pipeline Conference
October 1–5, 2000
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
978-0-7918-4024-5
PROCEEDINGS PAPER
Effect of Orbital Automatic Welding on the Weld Metal Mechanical Properties in API 5L X65 Natural Gas Transmission Pipe
Jong-hyun Baek,
Jong-hyun Baek
Korea Gas Corporation, Ansan, Korea
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Young-pyo Kim,
Young-pyo Kim
Korea Gas Corporation, Ansan, Korea
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Woo-sik Kim
Woo-sik Kim
Korea Gas Corporation, Ansan, Korea
Search for other works by this author on:
Jong-hyun Baek
Korea Gas Corporation, Ansan, Korea
Young-pyo Kim
Korea Gas Corporation, Ansan, Korea
Woo-sik Kim
Korea Gas Corporation, Ansan, Korea
Paper No:
IPC2000-123, V001T02A013; 7 pages
Published Online:
October 21, 2016
Citation
Baek, J, Kim, Y, & Kim, W. "Effect of Orbital Automatic Welding on the Weld Metal Mechanical Properties in API 5L X65 Natural Gas Transmission Pipe." Proceedings of the 2000 3rd International Pipeline Conference. Volume 1: Codes, Standards and Regulations; Design and Constructions; Environmental; GIS/Database Development; Innovative Projects and Emerging Issues. Calgary, Alberta, Canada. October 1–5, 2000. V001T02A013. ASME. https://doi.org/10.1115/IPC2000-123
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