With the longer steel tending to be larger in diameter. Conventional extension steel is characterized by a duplicate thread on each end of the steel. Hexagonal and round cross sections are available. Round cross sections are more prevalent.
Standard Length of Extension Steels
1200mm 1800mm 2400mm 3100mm 3700mm 6100mm
Since the coupling does not enter the hole, a bit diameter closer to the steel diameter can be used. This enhances flushing and hole accuracy.
Various Different Size and Different Quality Requirement
A. Flexible Supplying Plan to make your purchasing much more fun than before.
B. Never Ever fast response to every customer saving your precious time for ever.
C. Special Order proceed in advance without down payment give you 100% confidence and trust care.
D. We accept customer tailer-made order based on samples or drawings.
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