logo
Puyang Zhongshi Group Co., Ltd.
المنتجات
أخبار
المنزل > أخبار >
أخبار الشركة عن Oil Drill String-Drill Collar
الأحداث
الاتصالات
الاتصالات: Mrs. Liza
فاكس: 86-393-4807842
اتصل الآن
راسلنا بالبريد الإلكتروني

Oil Drill String-Drill Collar

2026-05-08
Latest company news about Oil Drill String-Drill Collar

A drill collar is an essential tool used in oil and gas rigs for drilling operations. It has many functions, including providing weight on the drill bit for efficient drilling and stability during operation.

The drill collar is manufactured from chrome-molybdenum alloy 4140. Furthermore, they are heat-treated and quenched over their entire length, with a Brinell hardness range of 255 to 341 to obtain mechanical properties as specified by API Spec 7-1. Their bore is accurately machined to ensure smooth, balanced rotation. Drill collars are manufactured in a wide range of sizes (ODs) and are available in length ranges 2: 9.15–9.76 m (30–32 ft); and 3: 12.8–13.27 m (42 ft-43 ft).

 

آخر أخبار الشركة Oil Drill String-Drill Collar  0