METHOD FOR FORMING A WELDED SEAL

摘要

A welding method includes inserting a weldable object at least partially into a through bore formed in a generally tubular body the tubular body having an interior flow passageway and an outer surface and the through bore having a borehole wall; transmitting inert gas between the weldable object and the borehole wall the gas being transmitted through the through bore; and welding the weldable object to the tubular member while the inert gas is being transmitted.