Internal Threads of Threaded Fittings

I should post this with the last post, but I don't have enough times to do it, because I have to finish the job first, and now Piping & Fabrication will continue the last article about Threaded Fittings.

Threaded fittings are available in pressure Classes 2000, 3000, and 6000. Socket welded fittings are available in pressure Classes 3000, 6000, and 9000. Limitations on fitting size and service conditions are as provided for by the code governing the installation. The maximum allowable pressure of the fitting is equal to that computed for straight seamless pipe of equivalent material, considering manufacturing tolerance, corrosion allowance, and mechanical strength allowance. Also, for socket welding fittings, the pressure rating must be matched to the pipe wall thickness to ensure that the flat of the band can accommodate the size of the fillet weld required by the applicable code. The recommended fitting pressure class for the various pipe wall thicknesses is as follows:

Internal threads of threaded fittings are in accordance with ASME B1.20.1-Pipe Threads, General Purpose (Inch).

But I have to rotate the table below because the limited of space, you can copy it and rotate it to see clearly.

TABLE A2.8 Dimensions of Typical Commercial Forged-Steel Threaded Fittings

TABLE A2.9 Dimensions of Typical Commercial Forged-Steel Socket-Welding Fittings