ERW steel pipe is the first choice for city gas pipeline

1, the city gas pipeline network main pipeline comparison from the aspects of safety, ERW steel pipe confined ability, tensile strength and elongation is far greater than cast iron pipe its tensile strength and bearing capacity and the ability to adapt to the temperature difference is more than "PE" pipe; From the interface rigor, ERW steel pipe welding interface than cast iron pipe interface is much more closely, more strong;

2, the comparison, from the aspects of adaptability of ERW steel pipe is suitable for gas, LNG, LPG, liquid mixing air and gas, and cast iron pipe to adapt to the ability of LNG and natural gas is much less; The scope of the ERW steel tube's ability to adapt to the temperature difference and pressure is much larger than "PE" tube.

3, from the aspects of economy, ERW steel pipe is larger than that of nodular cast iron pipe unit price and total price cheaper, when more than 160 above, ERW steel pipe also is much cheaper than "PE" tube (in general, most gas ZhuGanGuan city in phi 300).

4, ERW steel pipe corrosion resistance than cast iron pipe and PE pipe, this is in the design and construction must be good anticorrosion measures is an important problem.