Forged Fittings Versus Casting
A cast fitting is made by pouring molten metal into a mold of the desired shape. Forged steel is stronger and more reliable than castings because the grain flow of the solid steel piece is altered to conform to the shape of the part in the die. Because of this, forging provides a uniformity of the structure and composition of the finished part. The refinement that occurs is due to the thermal cycle and deformation process which is what strengthens the final part in respect to internal working pressure, and external impact and shear strength.