"Our company is a real manufacturer, headquartered in Shanghai, doing various regions of the country sales are ex-factory price, without any intermediate miscellaneous agents. Shanghai Gan Jue Industrial Co., Ltd. is a large sign pile manufacturers, China's oil supply Pipeline signs pile, China Petrochemical signs pile, China Mobile signs pile, China Telecom cable marker piles, road signs pile of cement, production company logo piles used in power plants, power distribution room, substations, gas, electricity, railways, telecommunications etc., Gan Jue electricity, and always adhere to the "quality first, reputation first" purpose, Gan Jue staff welcome you wish to purchase a friend in need, please contact our principal clerk, Contact: Mr. Xu Mobile: 18621966098 mark piles, pile-use encrypted communication standard rock classification: 1 Ground floor marked stone 1.1 identifies ground ID tag for a variety of ground above the pipeline, including mileage piles, piles signs, communications standard stone, encryption piles, warning signs, such as 1.2 miles. Pile milepost markers for oil and gas pipelines towards mileage pipeline ancillary facilities 1.3 test piles testpost laid on buried pipelines, ancillary facilities for monitoring and testing pipeline cathodic protection parameters Note: General mileage piles and test piles will merge settings, hereinafter referred to as mileage piles. 1.4 mark is used to mark the pipe pile markerpost direction changes, pipeline and ground engineering (underground hidden objects) Cross, at the junction of management units, structural changes in the pipeline (diameter, wall thickness, the protective layer), pipeline ancillary facilities ground markers, including corner pile, wearing (cross) more piles (rivers, roads, railways, tunnels), cross-pile (pipeline crossing crossover cable, power cable crossover), sub-pillar, facilities pile. 1.5 communication standard stone communication Ground monument to mark the laying of fiber optic communications position toward the ground to identify, also known as cable pile. hereinafter referred to as the communication standard stone. 1.6 encryption pile additionapost mileage between two adjacent piles, at a certain distance toward laying the pipeline for confirmation Mark, for both pipeline depth shallow ditches, heavy vehicles through without making the road culvert pipe protection, pipeline through densely populated areas, such as special sections on the ground warning signs. 1.7 warning signs warning sign for marking high-risk area pipeline Ground warning signs security matters and, if necessary can directly contact the company clerk, thank you. website advertising and the like do not interfere. "