Application field: widely used in gas, electric power, water conservancy, communications and other industries, from the ground trenchless accurate detection of underground electronic information marker equipment.

　　Scope of use : 1, directly buried non-metal gas pipelines and facilities must use electronic identification system;

　　2, directly buried metal gas pipelines and facilities according to the complexity of the use of electronic identification;

　　3, all underground gas pipeline all kinds of valves;

　　4, all invisible manhole cover or may be buried by municipal (road, green) manhole cover;

　　5, all underground gas pipeline non-man well turn;

　　6, all underground gas pipeline branch points, joints, such as tee and reducer joints, etc. .

　　7, all underground gas pipeline and other underground facilities at the intersection;

　　8. The two ends of a gas pipeline across a road, river, building, fence, or other public relations facility may be the two ends of a gas pipeline protection pipeline;

　　9. The highest and lowest position of a gas pipeline when the depth of the change is greater than 0.5 meters;

　　10. All pre-buried Gas Pipeline Ends;

　　11. Both ends of the underground pipeline laid by trenchless technology;

　　12. Repaired underground gas pipeline or joint (for marking Maintenance Information) ;

　　13. Other important underground gas facility points marked on all file drawings;

　　14. All areas identified by operators as requiring marking and precise positioning.

　　2250M-IDStandard fitting