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4.8/8.8 Grade Carbon Steel Hot DIP Galvanized Electric tower Fitting polishing HDG DIN3570 U Bolts with Nuts

U-bolts, shaped like the letter U and threaded at both ends, were traditionally utilized to provide support for pipework, specifically for pipes transporting fluids and gases. Their sizing used to be defined using terminology familiar to pipe work engineers, referring to the size of the pipe they were intended to support. For instance, engineers might request a "40 Nominal Bore U-bolt," a term exclusive to their field, indicating the desired U-bolt size.

Interestingly, this "40 nominal bore" reference doesn't directly correspond to the physical size or dimensions of the U-bolt itself. Instead, it signifies the inside diameter of the pipe it's meant to support. Engineers use this measurement to determine a pipe's fluid or gas carrying capacity during the design phase.

However, as U-bolts are now being employed by a broader range of users to secure various types of tubing or round bars, a more user-friendly measurement system is required to accommodate this wider usage.

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