Which gas mark pile factory wholesale cheap or number] 18621966098 [Gan Jue "Shanghai Gan Jue Industrial Co., Ltd. is a large signs pile manufacturers, supplies China oil pipeline signs pile, China Sinopec signs pile, China Mobile signs pile, China Telecom Cable Signs pile, cement road signs pile, I produced the signs pile used in power plants, power distribution room, substation, gas, electricity, railways, telecommunications, etc., Gan Jue electricity, and always adhere to the "quality first, credibility first" purpose, Gan Jue staff welcome your purchase. want a friend in need, and the Company's principal clerk, Contact: Mr. Xu Mobile: 18621966098 signs pile, encrypted communication by use of standard rock pile Category: 1 Ground floor mark stone 1.1 for pipes above ground ID identifies a variety of ground markings, including the mileage piles, signs pile, communications monuments, encryption pile, warning signs, etc. 1.2 mile post milepost used to mark the trend of oil and gas pipelines, pipeline mileage ancillary facilities. 1.3 test piles testpost laid in buried pipelines for monitoring and testing pipeline cathodic protection parameters ancillary facilities. Note: Average mileage piles and test piles will merge settings, hereinafter referred to as mileage pile. 1.4 Signs pile markerpost used to mark changes in pipe direction , piping and ground engineering (underground hidden objects) cross border management unit, plumbing structural changes (diameter, wall thickness, the protective layer), ground markings pipeline ancillary facilities including corner piles, wear (cross) more piles (rivers, highways, railways, tunnels), cross-pile (pipeline crossing, cable crossover, power cable crossover), sub-pillar, facilities pile. 1.5 Communication Standard Stone communication monument to mark the laying of fiber optic communications position toward the ground mark, also known as fiber optic cable pile. hereinafter collectively referred to communicate monuments. 1.6 Encryption pile additionapost between two adjacent mileage piles, buried at a certain distance toward the ground to confirm pipeline markers for both pipeline depth shallow ditches, heavy vehicles through without making the road culvert pipe protection, pipeline through densely populated areas and other special sections on the ground warning signs. 1.7 warning signs warning sign for marking high-risk areas of the ground pipeline safety precautions to warning signs and, if necessary, and the Company's business directly staff contact, thank you. website advertising and the like do not interfere. "