NOVELTY - The junction (10) has a first or vertical pipe section (14) extending from second or horizontal pipe section (12) at an angle (54) in a range of from 10 degrees to 90 degrees. An enlarged zone (40) formed in a medial portion of the second pipe section defines maximum internal diameter (D-E) that exceeds internal diameter (D1) of a bore (22) of the second section, where first fluid stream (F1) and second fluid stream (F2) merge in the enlarged zone to form a combined fluid stream when the first stream is introduced into the second section and second stream is introduced into the first section.    USE - T-shaped vibration reducing pipe junction for use in a pipe manifold i.e. hydraulic fracturing manifold, of a pumping system (all claimed) for supplying fracturing fluid e.g. gas or liquid/oil, to a well head for oilfield or hydraulic fracturing operations, oil distribution and processing facilities e.g. petroleum distribution hubs and catalytic cracking plants, and electric power generating plants e.g. nuclear, coal, natural gas, hydroelectric and solar plants. Can also be used for automobiles, lorries, airplanes and trains.    ADVANTAGE - The junction ensures reduction in vibration of T-junction parts and other components of the pumping system by use of the T-junction parts to ensure increased safety at a well site when the high pressure fluid streams are combined within a single pipe junction, while ensuring reduction in pipe wall erosion and reduced stress concentration of the junction during operation of the pumping system.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for delivering fracturing fluid to a well head.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a T-shaped vibration reducing pipe junction.    Maximum internal diameter of enlarged zone (D-E)    Internal diameter of bore (D1)    Fluid streams (F1-F4)    T-shaped vibration reducing pipe junction (10)    Horizontal pipe section (12)    Vertical pipe section (14)    Bore (22)    Enlarged zone (40)    Extending angles of pipe sections (54, 56)