![]() These reinforcement pads provides additional strength and capability to the pipe. To increase the pressure and load carrying capability of the equipment nozzles, RF Pad are welded. Similar situation arises for Pressure Vessel Nozzle Connections. So to handle the pressure and reduce the stress concentration in that region the thickness is increased locally in the form of reinforcement pad or RF Pad. But the section where the straight pipe is punctured becomes weak section due to the presence of that hole. So, it is a standard method to fabricate the tee by cutting a hole in the header and welding the branch in the pipe. Sometimes, such fittings are not readily available as standard pieces. ![]() With the increase in pipe size, the cost of branch connection fittings increases.
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