HOTDIP GALVANIZATION For steel frameworks used in fabric buildings hotdip galvanization is preferable to inline galvanization since it coats the entire piece of steel inside and out This increases the reliability of the steel framework of the fabric structure by adding an extra layer of corrosionresistance Little care is required to maintain its strength and durability Hotdip galvanization further offers the ability to withstand increased environmental stress and pressure on the fabric cover improving the longevity of the trusses and posts Steel materials are tested and proven before being used so to provide you with a reliable framework that meets your needs The hotdip galvanization process make trusses more reliable while creating a smooth surface that wont snag or tear your fabric cover Heres how it works OUR STRENGTH IS IN OUR ENGINEERING OPEN WEB TRUSSES To ensure hotdip galvanized sectional steel meets the highest standards vent holes must be reinforced to parts pieces end plates and similar features Open web trusses meet these standards As the components are immersed in molten zinc on an angle vent holes are arranged so the zinc can run in and out freely of corners and angles Otherwise zinc may get trapped in these pockets resulting in defects as is common in bent web trusses While bent web trusses are quicker and sometimes more affordable to fabricate bent web trusses do not allow for proper coating of protective zinc Improper welding points means that the access for the hotdip galvanizing liquid is unable to penetrate and coat the inside truss causing weak points in the truss and steel Over time bent web trusses are more likely to buckle and corrode resulting in a weaker overall fabric building Calhouns fabric buildings are built using open web trusses specifically aerating the corners of our welds so the zinc can fully penetrate the steel during the hotdip galvanization process Our open web trusses are 100 protected from corrosion inside and out and wont ever buckle or corrode from the inside resulting in a stronger overall fabric structure 140 x 300 VP SERIES Degreasing Rinsing Pickling Rinsing Flux Solution Drying Zinc Bath Cooling Inspection