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Product name: Kelly
writer:   release time: 2017-10-12
Product details
We can manufacture square drill rods and hexagonal drill rods as per requirements of customers. They are made of AISI 4142H-4145H forged or rolled alloy structural steel.  Quenching plus tempering thermal treatment will be conducted over the whole length. Its Brinell hardness can reach 285-341 on the basis of such thermal treatment. Charpy impact energy: 54J. The formulated process can ensure that the misalignment of the hole reaches the standard wall thickness. Kelly bars are manufactured according to the technical code API.

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Address: 045499, People`s republic of China, No.114 Chaoyang West Street, Shouyang county, Jinzhong city,Shanxi Province.

Tel:  +86(354) 4602448/919  Fax: +86(354) 4602 431 E-mail: hj@huanjie. com. cn / gongjinwu@huanjie. com. cn

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