Double wire, double-sides submerged arc weld spiral pipe production lines, with Lincoln weld machine and auto-tracing weld machine, have high weld speed, high pressure and temperature keeping are the basic of anti-penetration resistance, widely used in oil, gas, natural gas thermal power generation and other projects.

The development of straight welded steel pipe production technology starts from the construction of the manufacturing industry. Due to the fact that the straight joint steel pipe is inseparable from human life and production activities, the production technology of straight joint steel pipe industry not only develops rapidly, but also brings forth new ideas through the old ones. The production of straight welded steel pipe occupies an irreplaceable position in the steel industry.Straight—seam steel tubes are not only used to transport fluids and powdery solids, to exchange heat energy, and to make mechanical parts and containers. They are also economical steel.

The welding technology of ERW Steel Pipe is generally divided into high frequency resistance welding and high frequency induction welding.The forming process generally uses the rolling cold forming method.ERW steel tubes are generally produced with smaller diameters, usually less than 660 mm (26 inch).Mainly for liquid transportation, gas transmission, building structures, etc.

Seamless steel pipe is made of round steel perforated, the surface has no weld.Generally including hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe etc.Seamless steel tubes are mainly used for petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler and furnace pipes, bearing pipes and high-precision structural steel pipes for automobile, tractor and aviation.

Clasifications:Decorative square tubes, square tubes for machine tools, square tubes for machinery industry, square tubes for chemical purposes, square tubes for steel structures, square tubes for shipbuilding, square tubes for steel tubes, square steel tubes for steel beams, special purpose square tubes. Its products are widely used in all kinds of large buildings and large equipment etc.

The bending pipe is bent by a complete set of bending equipment, which can be divided into two processes of cold simmering and hot pushing.No matter what kind of machinery and equipment and pipeline, most of them are used in bending pipes, mainly for oil, gas, liquid, engineering bridge construction etc.