Import Drill Collar — Buy in Bulk from Supplier in China

Drill collars from Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd are tubular steel components engineered to provide weight on bit during drilling operations. The product data specifies use of high-grade steel and a smooth surface finish to reduce friction, but does not state exact material grades or mechanical properties. Dimensions are available in multiple sizes, indicating production flexibility for varied wellbore requirements.

The collars are described as having a smooth finish, which typically means a surface roughness below 3.2 micrometers Ra, common in premium drill collars to prevent premature wear on stabilizers and BHA components. While API certification is mentioned, no specific standard (e.g., API 7-1 or API 5CT) is cited. The material is implied to be carbon or low-alloy steel, consistent with industry norms, but no heat treatment or metallurgical details are provided.

These collars are targeted at drilling contractors in oil and gas exploration, mining, and construction sectors. Common sizes range from 5 inches to 10 inches in outer diameter, with standard lengths of 30 to 32 feet. Packaging is described as secure, likely using steel frames or wooden crating. Trade terms include FOB and L/C, but MOQ and lead time are not stated. Buyers must confirm these directly with the supplier.

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is located in Mudanjiang, Heilongjiang Province, China. The supplier is classified as imported with harbor trust verification, indicating export activity. No details are provided about company history, workforce size, production volume, or client references. The listing confirms drill collar manufacturing but does not mention certifications, testing facilities, or quality control procedures.

The supplier has no recorded response rate or average response time, suggesting limited buyer communication through the platform. While API certification is referenced, no documentation is attached or specified. Buyers must treat this as a manufacturer with export capability but must independently verify all technical claims, material grades, and compliance standards before procurement.