1. Oil, natural gas conveyance pipes：including municipal gas distributing pipeline, long distance conveyance of oil, natural gas, etc.
2. Casing and tubing: lined inside drilling well, seamless pipes are only choice, but more and more foreign companies have been choosing ERW instead of seamless pipes for years, and reduced the procuring cost. ERW pipes will gain much more market share long with the improvement of manufacturing technology of casing and tubing of class J55, K55 and N80.
3. Constructional structural pipes(round, square and rectangular): round or square and rectangular ERW structural pipes are widely used un frameworks of super malls, theatres, airports, bridges workshops and so on.
4. Low pressure flow transmiting: ERW pipes are also used in water supply, cooling water supply of plant and equipment, low pressure thermal distributing, coal slurry transportation and the like.
5. Pipes for raw material in manufacturing industry: automobile vent-pipes, low and intermediate pressure boiler pipes, bulk materials transportation pipes.
6. Other usage: piling pipe, furniture fabricating and otherwise.
