Api Slick Or Spiral Drill Collars - China

We supply slick drill collars, spiral drill collars and non-magnetic drill collars; their sizes are from 3-1/8 to 11 inches.

Besides the drill collars in the table below, we can supply other drill collars at customers' request.

Materials: Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the "as rolled" surface finish condition.

Alternative surface finishes are available.

Rigid Inspection Procedures: We inspect all our drill collars to ensure compliance with API SPEC 7-1 standards.

These inspections include visual dimensional checks as well as ultrasonic inspections over the entire body of the drill collar.

Cold Rolling: Drill collar thread roots, as well as elevator recess upper radius, are cold-rolled.

Cold rolling creates a compressive recess upper radius stress condition that increases fatigue life by minimizing crack initiation.

Phosphate-coated or Copper Plating: All connections are phosphate-coated or copper plated to improve resistance to corrosion.

Slip Groove, Elevator Groove and Size:

Lake offers optional slip and elevator recesses to improve handling efficiency and safety.

Unless otherwise specified, slip and elevator recesses are machined in compliance with API spec 7-1 guidelines.

Thread Protectors: Our company offers steel, cast steel and plastic steel thread protectors for its drill stem products.

Lake Petro company is a professional supplier of various oilfield equipment, including oil drilling and service equipment, oil production equipment, OCTG, wellhead & downhole tools and spare parts.

Our products have already been exported to USA, South America, Africa, Middle East, Russia and some other countries (regions).

Lake Petro company has become VIP (assigned) supplier and built strategic partnership with some countries' national petroleum companies.

Company Contact:

• Posted By: Dongying Lake Petroleum Technology Co., Ltd

• Phone: +865467080021

• Address: Huanghe Road, Dongying , Shandong , China

• Email:

• Website: https://www.lakepetro.com

• Business Description: We are a supplier from China for Oilfield equipment and tools: BOP, Mud pump, Valves, pipes, Handling tools, Downhole tools, Solid control, Wellhead control, flanges, fittings and spare parts.