Straight seam welded pipe production process for that?
Longitudinal production process is simple, high efficiency, low cost, rapid development. Spiral Welded Longitudinal higher than the strength of the general, can use a narrow large diameter pipe billet production, but also the width of the blank with the same production of different pipe diameters. But with the same length of straight seam pipe than the weld length of 30 ~ 100%, and lower production rate.
1. Low pressure liquid delivery welded steel pipe (GB/T3092-1993), also known as general welded pipe, commonly known as the clarinet. Is used to transport water, gas, air, steam, oil and heating generally low pressure fluid and welded steel tubes for other purposes. Then divided into ordinary steel pipe wall thickness and thicker steel; take over the side into the form of non-threaded steel pipe (tubes) and with a threaded steel pipe. Specifications with the nominal pipe diameter (mm) that the nominal diameter is the diameter of the approximation. Customary common-inch, said low pressure liquid delivery welded steel pipe for the transmission fluid in addition to direct, but also a large number of low-pressure fluid used to transport the original galvanized welded steel pipe. 2. Low pressure liquid delivery galvanized welded steel pipe (GB/T3091-1993), also known as galvanized welded steel pipe, commonly known as white tube. Is used to transport water, gas, oil and heating the air steam, warm water and other fluids, or other general purpose low pressure hot-dip galvanized welding (furnace brazing or welding) pipe. Then divided into ordinary steel pipe wall thickness of galvanized steel and thicker galvanized steel; take over the side into the form of non-threaded galvanized steel pipe and galvanized steel pipe with threads. Specifications with the nominal pipe diameter (mm) that the nominal diameter is the diameter of the approximat |