
I remember a shop foreman in Ohio holding up two tubesheet samples. One had a tube that dropped into the hole with almost no resistance. The other required a rubber mallet. “Same drill bit,” he said. “Same operator. Two different fits. Which one am I supposed to weld?” That’s the question tube-to-tubesheet fit-up forces every heat exchanger […]
I remember a shop foreman in Ohio holding up two tubesheet samples. One had a tube that dropped into the hole with almost no resistance. The other required a rubber mallet. “Same drill bit,” he said. “Same operator. Two different fits. Which one am I supposed to weld?” That’s the question tube-to-tubesheet fit-up forces every heat exchanger […]


I remember a shop foreman in Ohio holding up two tubesheet samples. One had a tube that dropped into the hole with almost no resistance. The other required a rubber mallet. “Same drill bit,” he said. “Same operator. Two different fits. Which one am I supposed to weld?” That’s the question tube-to-tubesheet fit-up forces every heat exchanger […]
Since 1994, Zhengzhou Kehui technology has been providing customized automated turnkey welding solutions throughout the world, Our technology product are designed, developed and fabricated exclusively by Kehui technology to ensure optimum compatibility. Our technical solutions are designed to seamlessly integrate robots, welding equipment, automated welding lines, servo control positioners, intelligent work cells and software. From 2014, Kehui technology is a listed company (stock code: 831045) that has certified by the lSO9001CE and CU-TR certifications.




Providing industrial upgrading services to more than 200 international companics
300 welding experts in 4 province ofChina work with customers to detemmine the best combination of components for their specific needs.
41 patents and 11 software copyright register certificates.
Since 1994, Zhengzhou kehui technology has been providing customized automated turnkey welding solutions throughout the world.