Specifications

1.As customer`s request
2.AISI 4145H
3.Fast delivery&Best service

Kelly

Features:

       We can manufacture square kelly and hexagonal kelly 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.