Generally by high-frequency straight seam welded pipe unit will be certain specifications elongated strip and rolled into a circular tube straight seam welded steel pipe. The large-diameter welded pipe is over 1000 mm diameter straight seam steel pipe, straight seam steel pipe on the market today can reach the largest diameter 2250 mm, large-diameter straight seam double submerged arc welded steel pipe production process mainly based products by bending , commissure, internal welding, outside welding, straightening, flat top channel processes. Is a large pipeline projects, water gas engineering, construction.
The best choice for this type of use of national natural gas pipe up to 20 million tons, most of the foreign imports, competition in the market is small, demand, market prospects broad.
The shape of the straight pipe joints may be circular, square or may be profiled, depending on the sizing after welding. Large-diameter straight seam steel pipe welds with large-diameter pipe is parallel to the longitudinal steel pipe. Usually divided into metric welded steel tube, welded thin-walled tube, transformer cooling pipes and so on.
Longitudinal production process is simple, high efficiency, low cost, rapid development. Mainly used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction. For the transport of liquids: water supply and drainage. For gas transportation: gas, steam, liquefied petroleum gas. For structural purposes: as piling pipe for bridges; docks, roads, buildings and other structures tube.
No comments:
Post a Comment