pipe mould:steel tube, plum tube, flat tube, oval tube, fan-shaped tube, polygonal tube ... With CNC machine. 4. Pipe mould: steel tube, plum tube, flat tube, oval tube, fan-shaped tube, polygonal ... tube, single and double groove pipe, tube frame, special-shaped mould, ... .9. Selection: To produce first-class pipe mould, we must have first-class raw material. We ...