The alloy steel n / WL NR / WL wireline drill pipe NWL wireline drill pipe used for diamond core drilling is made of the highest quality heat-treated seamless steel pipe and complies with S135 / ASTM 4130 steel grade standard. Ultimate tensile strength, yield strength, high accuracy and good straightness provide the best performance under different drilling conditions. The rod end surface hardening can protect the threaded connection and improve its wear resistance and rod life. We have many years of experience in manufacturing coring drill pipes, and we strive to provide you with the most cost-effective products. Extracting core samples from deep holes requires reliable equipment and tools. It is very time-consuming to unnecessarily pull out the core from these depths - time is money! We are always proud of the quality of our drill pipes.

Raw materials:

We choose the best steel tubes in the market to manufacture our drill rods and pipes. Spot check will be conducted after the steel tubes delivered to company. We will make sure the compositions and specifications match the inspection report form the suppliers.

Based on the depth of drill bore, WL series wireline core drill rods are classified into A and B grades. A grade drill rod is entire-length or ends thermal processed and B grade drill rod is entire-length processed.

Material:30CrMnSiA or 45MnMoB(A grade), XJY850 or BG850( B grade)

WIRELINE DRILL RODS OFFERINGS