The construction section of the transmission line renovation project is 70 kilometers long, with more than 3,000 piles, with depth of 4-8m including 2m of weathered sand strata, dimension of 400-600mm. The project works 6 hours a day for 8 -10 piles. Its ultra high hole forming efficiency and stable product quality have won the unanimous praise of the 11th Bureau of Water Resources and Hydropower and foreign friends. Upholding the image of Made in China product.
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