影响因素多，管道燃气工程中的很多环节如决策、设计、材料、设备、施工方法

Many factors, gas pipeline project in many areas such as decision-making, design, materials, equipment, construction methods, construction technology, construction conditions, technical measures, natural environment, construction personnel quality, schedule, cost, etc. These factors will directly or indirectly affecting the quality of the project. But also have some effect on the cost control of gas pipeline project

Many factors, pipeline gas engineering, such as decision-making, design, materials, equipment, construction methods, construction technology, construction conditions, technical measures, natural environment, construction personnel quality, duration, cost, etc. , these factors will directly or indirectly affect the quality of the project. At the same time, it will also have a certain effect on the cost control of pipeline gas project.

There are many influencing factors, such as decision-making, design, materials, equipment, construction method, construction process, construction conditions, technical measures, natural environment, quality of construction personnel, construction period, cost and so on. All these factors will directly or indirectly affect the quality of the project. At the same time, it will play a certain role in the cost control of pipeline gas engineering