Any steel that is open at both ends and has a hollow section and whose length is relatively large to the perimeter of the section can be called a steel pipe. When the length is relatively small compared to the perimeter of the section, they can be referred to as pipe sections or pipe fittings, all of which fall within the category of pipe products.
For more than 60 years, architects have been using stainless steel to build cost-effective permanent structures. Many existing buildings fully illustrate the correctness of this choice. Some are very ornamental, such as the Chrysler Building in New York City. However, in many other applications, the role played by stainless steel is not so eye-catching, but it plays an important role in the aesthetics and performance of buildings. For example, because stainless steel is more wear-resistant and indent-proof than other metal materials of the same thickness, it is the material of choice for designers when constructing a walkway in a place with a large population flow.
Stainless steel has been used for more than 70 years to build new buildings and structural materials used to repair historic sites and monuments. Early designs were calculated according to basic principles. Today, design specifications, such as the American Society of Civil Engineers' standard ANSI/ASCE-8-90 "Design Specification for Cold-Molded Stainless Steel Structural Parts" and the "Structural Stainless Steel Design Manual" jointly published by NiDI and Euro Inox, have simplified the long service life, Design of structural components for structural integrity.