Kelly Bar Square Adapter
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About Us: http://sinodrills.org/4-6-adapter.html
We have two different sections of square heads for customers to choose from. One is BAUER, and the other is SANY. Bauer square heads have two lifting holes, and SANY has a single lifting hole.
Our square heads go through a heat treatment, forging, then grinding to meet size requirements as determined by the customer. The special treatment makes the square head harder, rougher, and increases the kelly bar's service life.
Please choose the right size for your kelly bar, according to the following parameters: 150 x 150, 200 x 200, or customized.
These square head joints use a 1.5m longer and thicker steel pipe welded together to form the whole set.
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