Specifications
1.API standard2.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.
