Development of High Frequency Electric-Resistance Welded Steel Pipe with Excellent Low Temperature Toughness of Weld for Use in Extremely Cold Areas

2017 ◽  
Vol 58 (679) ◽  
pp. 647-651
Author(s):  
Takatoshi OKABE
Keyword(s):  
Low Temperature ◽  
High Frequency ◽  
Steel Pipe ◽  
Electric Resistance ◽  
Welded Steel ◽  
Low Temperature Toughness

scholarly journals Failure Analysis of Premature Corrosion of HF Seam-Welded Steel Pipe in Central Heating System

2021 ◽  
Author(s):  
Dorota Tyrala ◽  
Bogdan Pawlowski
Keyword(s):  
High Frequency ◽  
Energy Dispersive Spectrometry ◽  
Weld Line ◽  
Welding Process ◽  
Heating System ◽  
Bond Line ◽  
Steel Pipe ◽  
Huge Number ◽  
Welded Steel ◽  
Central Heating

AbstractPremature corrosion in the form of longitudinal cracking in a high-frequency (HF) induction seam-welded steel pipe occurred after just 24 months in service. The failed pipe was investigated to reveal the main cause of its failure, and the results of microstructural examinations (light optical microscopy, scanning electron microscopy with energy-dispersive spectrometry) suggest that the failure resulted from an HF induction welding process defect—a so-called cast weld, that is, a huge number of iron oxides in the weld line caused by insufficient ejection of the molten metal from the bond line.

Grooving corrosion in electric resistance welded steel pipe in sea water

1978 ◽  
Vol 18 (1) ◽  
pp. 61-74 ◽  
Author(s):  
C. Kato ◽  
Y. Otoguro ◽  
S. Kado ◽  
Y. Hisamatsu
Keyword(s):  
Sea Water ◽  
Steel Pipe ◽  
Electric Resistance ◽  
Welded Steel
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