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Product Description:
Kellys are manufactured with one of two drive configurations, square or hexagonal. Square kellys are furnished as forged or machined in the drive section. Hexagonal or fully machined square kellys are machined from full length quenched and tempered round bars.
Square kellys are fabricated as per requirements or customers. The kellys are made of AISI 4142H~4145H forged or rolled alloy structure 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: > or = 54 J. The formulated process can ensure that the misalignment of the hole reaches the standard wall thickness. Kelly bars are manufactured according to API Spec 7-1. -
FAQ:
Why you need to choose Lake Petro?
As a professional oil and gas service company, Lake Petro has many good experience in selling and serves for the oilfield industries for years. Quality is the culture of the company, we provide API and BV certified products for customer.
Can you make us the best quality products as well as a good price?
Yes, we can give you really high quality products with competitive price. We have a better understanding in Chinese market, with us your money will be safe.
What is special compare with other companies?
First, we provide the quality products, with BV and API certified; At the same time, we provide our customer with the best service after sale, any time any where.
