Butt Weld Pipe Fittings are the recognized standard for leak-proof pipe fabrication in medium and high pressure systems and in pipelines handling corrosive and hazardous fluids. AYTC carries premium quality butt weld fittings in carbon steel and stainless steel approved by major international oil and petrochemical companies and manufactured from quality tested components. We also carry an alternative low-cost range of fittings for other applications.other applications.