Sunday 30 November 2014

F1554 Bolts Have Become An Industry Standard

By Ida Dorsey


Every project has many of its own peculiarities. The F1554 was first introduced in the early nineteen nineties. It covers all anchor bolts that were intended for structural supports to all foundations made with concrete. They can either be headed bolts, bent anchor bolts or straight rods.

The bent bolts have a right angle bend and are also unable to be pulled out. The threaded part is at one end and the L shape at the other. The hook is set into the concrete giving it extra anchorage. The headed bolts are actually turned and used upside down and inserted into concrete. The threads are showing and protrude from the concrete while the head is anchored well. A round plate is then welded to the head where extra strength is added.

The grading of the 36 is that it has low carbon with a ksi yield steel anchor. The 55 has a high strength capacity with low alloy and the 105 is heat treated and of alloy, also with high strength capacity. Supplementary testing will only be done when specifically asked when purchased.

This company perform all mechanical, hardness as well as revolving capacity testing in- house, and provide only products that are 100% fully traceable. They also give a very complete and precise certification packages which they store electronically. This makes sending out any extra copies very quick and easy.

This steel is different from the carbon one by the amount of chromium that is present. It is of a gray colour and is shiny, hard and easily broken. It has a high polish and is resistant to tarnish as well as having a high melting point to it. The symbol is Cr and the atomic number is 24 which is a proton number found in the nucleus of an atom in this element.

This enables the companies to produce the different parts much faster and to ensure that the clean threads will fit the nuts much securely. The life expectancy with this method can be longer than thirty years and all parts will be coated evenly. As zinc bonds to steel it will provide protection that is permanent.

Before this process can begin the bolts need to be prepared and cleaned. All of them are first wheelabrated which is the use of certain steel abrasives, so that all hot forging scales will be removed. They will then be dunked into a solution of caustic soda which will remove all organic materials. The next dunking will be in sulphuric acid as this helps with the zinc to infiltrate the top layer. The last phase is that they are flooded in a flux solution so that the zinc will respond to the steel.

Unfortunately the grade 55 thread rods are not easy to find but they can be made to order. Many people that use these bolts are keen to look up the specifications and these are available on PDF through the Portland Bolt Manufacturing company. They even have a live chat facility available so that all questions regarding fasteners and bolts can be answered immediately.




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