#METALMARKETUPDATE – MARCH ’23
The ISM Manufacturing Index (PMI) reached 47.7 in February, slightly higher than we saw in January at 47.4 but it fell short of the projected 48. This is the fourth…
Tag: heat exchangers
ASME Section IX – Weld Procedures
All welds on pressure vessels must be made by qualified welders, using qualified weld procedures. Section IX of the ASME Code specifies all the requirements for those qualifications. A weld procedure,…
Seal vs. Strength Welds
Heat exchanger tube end welds can be specified as strength welds or seal welds. What is the difference? The tube to tubesheet joint is a critical component of the exchanger…
“It’s Supposed To Be Screwed Up” – #MetalMarketUpdate (December 2022)
We sometimes ask ourselves “why are there so many problems?!” in our daily work efforts. Perhaps the better question to ask ourselves is “how do I navigate the challenges in…
Collar Studs in Heat Exchangers
What are collar studs, and when are they used? Collar studs are threaded studs with a larger central hub attached (see diagram). They are commonly used on exchangers with removable…
Field Repair Work: The Human Factor
This is likely the toughest expectation of all to “manage” when it comes to work in the field. From sleep deprivation to problems at home; from disagreements with co-workers to…
