NQ/NRQ wireline core drill rods drill pipe

Coring barrel is a section of tube in coring drilling, it is attached to the upper part of the drill bit to accommodate and protect the core. It also acts as a guiding tool when drilling. The ordinary core tube is only a seamless steel pipe with thread at both ends, and the diameter is slightly smaller than the diameter of the drill bit (2 to 4 mm). The single core tube is 3 to 4.5 meters long. In order to prevent the bending of the hole, several core tubes can be connected to form a long and large diameter drilling tool.

Drill pipe usage notes
1.New drill pipe should be pasted oil before connection
2.Make up and break at least 3 times before drilling
3.Hard bending and plastic coating can be processed according to clients' special requirements

Shijiazhuang WeiLiDa Prospecting Machinery Co., Ltd. is a professional manufacturer of drill pipe, drilling rig and other drilling tools. Our factory is located in Jinzhou, Shijiazhuang . 200 km from the capital Beijing. We have good export conditions to Tianjin port and Huanghua port. Our factory covers an area of 20000 square meters. Its total assets is 50 million yuan.

Our company has advanced friction welding, drill pipe thickening equipment and a variety of molding technology and processing equipment. According to the customer's requirements, we can produce various specifications of the drill pipe and connecting parts of the United States standards. At the same time, we are also equipped with a set of physical and chemical testing machine on the hydraulic pressure, heat treatment, no damage, etc. to ensure the quality of products. At the beginning of the establishment, we passed the certification of CQC and ISO9001. Through years of manufacturing experience and customer's use of reflection, the application, safety and reliability of the domestic industry of our products have reached a leading level. We adhere to the "quality first, reputation first" business philosophy. We do our best to meet the customers' need .We are very pleased to establish a long-term business relationship with you on the basis of mutual benefit. We believe that we will be your best partner in China