Specifications

1.API standard
2.Material: AISI 4145H chromium-molybdenum steel
3.Size: 2 1/2" ~ 5 1/4"

 Hexagonal kelly

Features:

       We can manufacture  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.