0°-60° 0-5mm 0-6mm 0-7mm 0-8mm 0-10mm 0-13mm 0-14mm 0-15mm 0-18mm 0-20mm 0-25mm (0-1") 0-30mm 0-40mm 0-50mm 0-50mm/0-2" 0-60mm 0.5-5mm 1-3.5mm 1-6mm 4,6,8,10,12,14mm 37.5° 62x77mm 80°-160° 90°-150° 99x84mm -5mm~+15mm

0.05mm 0.1mm 0.2mm 0.5mm 1mm 1mm (1/16") 2mm/0.05" 5° 62x77mm 99x84mm —

weld seam height W leg height weld length undercut depth throat size thickness theoretical throat size (a) theoretical leg height of convex weld theoretical leg height of concave weld porosity size comparison pipe wall thickness misalignment (high-low) LxW length leg length leg height (b) internal misalignment gap fit-up gap fillet weld throat size fillet weld length fillet weld leg height fillet weld height distance between two marking lines of socket weld crown height convex weld size bevel on end preparation angle θ angle of preparation angle amount of porosity per 25mm 45° angle 60° angle