Import Drilling Jar — Buy in Bulk from Supplier in China

The LHBZ mechanical drilling jar is a full‑mechanical device capable of delivering both upward and downward jarring to free stuck drill strings. It is offered in three size series identified as model lhbz121, lhbz165/159 and lhbz203/197, with outside diameters of 121 mm (4 ¾ in), 165 mm (6 ½ in) or 159 mm (6 ¼ in), and 203 mm (8 in) or 197 mm (7 ¾ in) respectively. Corresponding inner diameters are 50.8 mm (2 in), 57.2 mm (2 ¼ in) and 71.4 mm (2 13/16 in). The jars feature locking places (OAL) of 6370 mm (251 in), 7015 mm (276 in) and 7310 mm (288 in), with upper strokes of 210 mm (8 ¼ in), 142 mm (5 9/16 in) and 145 mm (5 11/16 in).

Maximum tensile loads are listed as 1.4 MN, 2.2 MN and 2.5 MN for the three size groups, while the corresponding maximum working torques reach 13 kNm, 15 kNm and 20 kNm. Upward jarring forces are specified at 450 kN, 630 kN and 820 kN, and downward forces at 230 kN, 360 kN and 460 kN. The jars connect via NC38 or NC50 couplings, with a standard 6 5/8 in regular thread. Pumping areas range from 62 cm² to 174 cm², reflecting the flow capacity of each model. Typical construction uses high‑strength alloy steel such as AISI 4130, which is standard for down‑hole jarring tools.

These jars are employed in vertical, deep, directional and complex well operations across oil‑field service firms and mining contractors. The supplier provides shipping under FOB or CIF terms, but exact minimum order quantities, lead time and payment conditions are not disclosed and should be clarified with the seller.

De Run Energy Co., Ltd. is based in the Chaoyang District of Beijing, China, with a listed address that also references a postal code of 100028. The supplier appears under the harbor trust tier and currently shows a response rate of 0 % with no average response time recorded, indicating that communication speed may need to be confirmed directly.

The company’s profile states that it supplies mechanical drilling jars for a range of well‑bore applications. No further details about manufacturing facilities, additional certifications or client references are provided, so interested buyers should request these specifics to assess suitability.