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The THREADS

 

ANCRABEC  uses two techniques for threading: rolling and low cutting. The cut threading consists of cutting and pealing of the metal to give it the proper form and dimension that is required. The second and more recent method, the rolled threading, consists of driving back and shifting the metal. This technique should be used where anchors and bolts play a critical role. The resistance of the rolled thread is approximately 20 % superior to that of the cut thread, the reason being that the metal grain isn’t cut at each rotation but it is pushed back or shifted.

For example, the aerospace industry uses mostly the rolled thread.

 

Also rolled threading requires slighly smaller diameter of bar in order to make rolled thread. For exemple to make 1" - 8 UN thread the metal bar to be used will be 23mm diameter.

 

 

 

Hot dip galvanization
STANDARDS USED (CSA  G.164  M 1981  & ASTM  A-153)

Hot dip galvanization is a unique method that consists of applying multiple layers of liquid zinc (melted at very high temperature) to protect the metal against oxidation and corrosion. To achieve this complex operation, the zinc that Ancrabec uses is 99,9% pure.

The thickness of the layering is measured with sophisticated magnetic and electronic machinery. The measurement is determined accordingly with the CSA G-164 standard or any other standard (American, European, …)   


Packaging, Handling and Stocking

The anchor bolts are packaged in a round pack of approximately 16 inches of diameter. Each package is attached with three galvanized metal straps to assure maximum protection of your anchor bolts.

Handling of your anchor bolts should be done as precisely and carefully as possible. We suggest you to use mostly (or when possible) nylon cable attachments which is the same method used at Ancrabec to handle our anchor bolts.

Ideally, storage of anchor bolts should be done in a way to prevent the products to be in contact with humid and wet surfaces. So, to assure longevity to our products and eliminate the risks of rust stains on the galvanized sections of your anchors and bolts, we strongly suggest to higher the galvanized section of your anchor bolts