Month: December 2013


Contract manufacturers (also called “job shops”) are often presented with requests for quotations from original equipment manufacturers (OEMs).  For example, a company that specializes in curving metals might be asked to price custom rolled angle iron to become component parts of Read more…


A common type of curved structural steel is the angle ring or angle flange.  Commonly made of carbon steel, stainless steel or aluminum, an angle ring is made by rolling a piece of structural angle into a ring and then Read more…


Probably the most common welding procedure is MIG welding.  Rolled and welded metal angle rings made out of angle iron commonly used as flanges are usually welded on the “outside only,” i.e. on the side opposite the face of the Read more…


Have you been to the retailer Costco recently?  If so, you might have indirectly contributed to funding a new museum in Union City, Tennessee.  You may have noticed that many of their goods bear the Kirkland brand.  Well, the Kirkland Read more…


When we were expanding our plant, I told the general contractor that the columns of the pre-engineered building looked too thin to hold the roof up.  He assured me that the calculations had been done and done with a generous Read more…


The natural vibration frequency of a steel member is controlled by these factors: Stiffness/the second moment of inertia (I) in 4 stiffer = higher freq Mass per length (lbmass/in) heavier = lower freq Length of beam (L, in) longer = Read more…

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