2.Seamless steel pipe: It is made by cold rolling, cold drawing or hot extrusion production process using round steel perforation as raw material. Working hours. Usually the pipe wall is thick.Seamless steel pipe: The steel pipe has low precision, uneven wall thickness, low brightness on the inside and outside of the pipe, high cost of sizing, and there are pitting and black spots on the inside and outside that are not easy to remove. ASTM A53 is produced mainly for pressure and mechanical applications, and is also used for transport of steam, water, gas line pipes.Welded pipe: its pressure-bearing performance is general, mainly used to transport water, oil, gas, air, and heating water or steam and other generally lower pressure fluids. The difference on the outer surfaceWelded pipe: The steel pipe has high precision, uniform wall thickness, high brightness inside and outside the pipe, and can be arbitrarily cut to length; it can be used as a thin-walled pipe. The
stainless steel seamless pipe wholesale difference in priceThe production process of seamless steel pipe is more complicated, and its price is more expensive than welded pipe.
According to different welding methods, it can be divided into straight seam welded pipe and spiral welded pipe. The difference in production processWelded pipe: The steel plate or steel strip is used as raw material, and it is welded after being crimped by the unit and mold. Steel pipes are used to make ring parts, which can improve material utilization, simplify manufacturing procedures, and save materials and processing. Widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction.
The difference in performanceSeamless steel pipes are much higher than welded pipes in corrosion resistance and pressure and high temperature resistance.Seamless pipe vs welded pipe1.5. It is largely used to convey fluids at low / medium pressures such as oil, gas, steam, water, air and also for mechanical applications.Tips: ASTM A53 covers seamless and welded steel pipe with nominal wall thickness. In some aspects, welded pipes can replace seamless pipes.With the improvement of welded pipe manufacturing technology, the mechanical properties and mechanical properties are slowly approaching seamless pipes. ASTM A53 ERW steel pipe is a typical carbon steel pipe( CS ERW pipe). The difference in applicationSeamless steel pipe: It has a hollow section and is used as a pipeline for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials. The surface condition is usually black and hot-dipped galvanized.4.3
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