According to the urgent demands of deep wire-line coring drilling tube in geology prospecting industry in China,based on the analysis on the operation requirement and took the comparison to foreign popular materials in the same industry,traditional producing process of seamless steel tube was modified with new XJY850 sophisticated high-strength geological pipe material developed.

The computer simulation of high precision tube drawing process;

Straightening multiple length precision tube can effectively increase rate of finished products.

The process of producing high strength finish tube of 20 steel for oil cylinder by LD60 three-high cold tube mill is introduced The influence factors on facial coarseness and properties of tube are discussed.

Application of ground penetrating radar to control of geological hazards of road tunnel;