For long, higher quality of pipework components are sought after all the time. After the the Fire Services Act was revised, It is now permitted to use stainless steel for sprinkler pipes. This permission has resulted in growing demands for stainless steel tubes used for Water supply and welted stainless steel tubes used indoors.

In oil refineries and the petrochemical industry, There are many strings such as corrosion resistance, heat resistance, high-temperature strength and low-temperature toughness. To satisfy those conditions, Austenitic stainless steel is widely used.

Regarding key stainless tubes for heat exchangers in thermal and unclear power plants, They are seamless most of the time. Welted steel tubes are also used in pipework of those plants

Thick-walled austenitic stainless steel tubes – SUS 304 and 304L – is used and the thickness varies from 6 to 36 inches. As severe inspections are imposed on those welted parts, toughness and so on, Those demanded specifications are rigorous.

Except for the removal work of low pH in Kraft recovery, welted austenitic stainless steel tubes is widely used in pulp manufacturing given those maintains .

In beer and dairy factories, the insides and outsides of steel tubes are smoothed and polished to #150 - #400. Its polishing work prevents liquid stoppage and makes them beautiful.

There have been growing demands for high-quality seamless stainless steel tubes . It is because the high integration of memories and other semiconductor devices has been further advanced.
Bright Annealed and Electro Polished pipes are used. The inner roughness of the former is under 3.2μms and the later is under 0.7 μms. Besides, the insides are required to be extremely clean without any particles and liquid. SUS 316L VIM/VAR pipes are picked out in essential parts.

Pipes are seen in office appliances, precision machines, electromagnetic valves, air cylinders and so forth. Austenitic stainless steel are largely used because it is highly nonmagnetic and keeps high dimensional accuracy after machine finishing. The demand for this sort of stainless steel has considerably increased because it can be used in various devices.