Combined with an engineering example,the design key points for indoor natural gas piping in chaffy dish restaurant trade are discussed from aspects of equipment lectotype,piping design, safety measures and so on.

Bypass velocity control of gas pipeline defect inspection tools;

Leak detection on gas pipeline with the distributed fiber-optic sensing technology;

Fracture control of gas pipeline

Application of dust detection device in high pressure natural gas pipeline;

With the initiation of such important national natural gas pipeline project as Sichuan-to-East gas transmission,to develop pipeline simulation software with independent intellectual property is on the trend.

This paper introduces the investigation results of Carsbad natural gas pipeline accident, and points out that the internal corrosion control is the direct cause for this accident.

The present situation of pipeline natural gas and liquefied natural gas resource and market at home and abroad is introduced, and the utilizable natural gas resource and market development in China are forecasted.

Developing status quo of compressor stations over China s land natural gas transmission pipelines is described.

The allocations of gas compressor sets in compressor stations and technology status quo for China s long distance gas transmission pipelines at present are summarized and developing tendency of the gas compressor sets is analyzed in the article.

The paper introduces common dewatering methods of long-distance gas transmission pipelines at home ano abroad.