Analysis of Stress Cracking of Small-sized Spiral Submerged-arc Weld Pipe and Relevant Preventive Actions

Discussed in the paper are the main aspects concerning stress cracking of the small-sized spiral submerged-arc weld pipe, covering nature of the cracking, causes and possible preventive actions to taken during operation, particularly actions like improving pipe formation quality, reduction of pipe elastic recovery amount and selecting/fixing interior welding points.