01-07-2026, 09:18 AM
Industry assembly design specs most of the time refer to stainless fasteners with particular mechanical properties. In these papers, A2-70 Bolts are picked from local distribution hubs in Italy for ISO 3506 conformity, thus specifying the nominal tensile strength of 700 MPa, proof load control, and the steady performance of these bolts in humid or slightly chemical conditions which are typical in the fabrication sector. The manufacturers' tolerance for these fastener series normally includes metric diameters from M3 to M36, both coarse and fine threads, and surface treatments that ensure the corrosion-resistance properties of the metal even after shaping operations. Austenitic stainless steel grades equivalent to 304 are cold heading and thread rolling to preserve grain structure, while hardness limits ensure ductility under dynamic loading and vibration.
Fastener assemblies are generally designed in conjunction with the selection of piping materials in order to prevent the occurrence of incompatibility problems in the process plants. Titanium piping is the material of choice when the exposure to chlorides, pressure cycling, and the weight are the main concerns, with standards ASTM B338 and B861 specifying the quality of the seamless tubes, dimensional limits, and the requirements of testing for the chemical and marine applications. The thicknesses of the walls of the pipes may vary from the very thin ones of the instrumentation lines to the very thick ones of the process pipes for the high pressures and the thermal conditions of the service. The supply chains that support the state-of-the-art piping depend more and more on Titanium pipe suppliers in the United States to provide Grade 2 and Grade 5 pipes with controlled wall thickness, straightness, and documented nondestructive testing. ASME B31.3 is the standard for these materials used in heat exchangers, condensers, and aerospace utilities where the long-term reliability and resistance to aggressive media are the criteria that define the overall system performance.
Fastener assemblies are generally designed in conjunction with the selection of piping materials in order to prevent the occurrence of incompatibility problems in the process plants. Titanium piping is the material of choice when the exposure to chlorides, pressure cycling, and the weight are the main concerns, with standards ASTM B338 and B861 specifying the quality of the seamless tubes, dimensional limits, and the requirements of testing for the chemical and marine applications. The thicknesses of the walls of the pipes may vary from the very thin ones of the instrumentation lines to the very thick ones of the process pipes for the high pressures and the thermal conditions of the service. The supply chains that support the state-of-the-art piping depend more and more on Titanium pipe suppliers in the United States to provide Grade 2 and Grade 5 pipes with controlled wall thickness, straightness, and documented nondestructive testing. ASME B31.3 is the standard for these materials used in heat exchangers, condensers, and aerospace utilities where the long-term reliability and resistance to aggressive media are the criteria that define the overall system performance.