Welding lines to the knob on the tube of 1.5 to 2 mm when the tube thickness below 6 mm; length of the welding line width must be covered with the bevelled edge out from 1.5-2 mm
Weld pipe protruding to 1.5 to 2 mm wall thickness when under 6mm; are spot-welded to the width of the road outside edge bezel government from 1.5 -2mm