Stainless steel seamless steel pipe, known for its corrosion and oxidation resistant capabilities, is widely used for fluid transport in both industrial and domestic applications. It is made of an alloy that contains chromium, nickel and molybdenum that strengthens and hardens the steel. The seamless steel pipes are produced by either cold-drawing or hot-forming, resulting in a uniformed size, shape and wall thickness. They hold true when bent and welded so they can be assembled into a variety of configurations to meet specific needs.
This seamless pipe offers many advantages over other traditional piping materials such as superior tensile strength and superior corrosion resistance due to its thinner walls and smoother inside surface. It is also used when a seamless weld is required, which is particularly beneficial in high pressure applications. Furthermore, it is non-magnetic and is resistant to corrosion from a large variety of industrial chemicals.
GB/T 14976-1994 “Stainless Steel Seamless Steel Tube for Fluid Service” is a Chinese industry standard that regulates the sizes, shapes, tolerance and packaging of the pipe for fluid transmissions. The standard covers a range of diameters from 4mm to 630mm and thicknesses from 0.5mm to 25.4mm. It stipulates various test requirements and marking rules. Generally, the seamless steel pipes are bundled together in wooden cases with a label of plastic film to protect the pipes from external rusting and other damage during transportation and storage.
The selection of the structural materials should mainly consider the operational requirements, such as temperature and pressure, working medium, flange connection standard and operating conditions. Thus, the right choice of stainless steel seamless steel pipes can help to achieve a safe and reliable system for piping applications for decades.
