| 摘要 |
<p>Pipe for transferring abrasive materials, comprising an external tubular body (11; 111) provided with at least a first external tubular portion (11a; 111a) and a second external tubular portion (11b; 111b) reciprocally connected, in correspondence to respective ends, with at least a welding bead (15; 115), and an internal tubular body (12; 112) disposed inside the external tubular body (11; 111) and made of a metal material with a resistance to wear that is greater than that of which the external tubular body (11; 111) is made. The internal tubular body (12; 112) comprises a first internal tubular portion (12a; 112a) inserted into the first external tubular portion (11a; 111a), and a second internal tubular portion (12b; 112b) inserted into the second external tubular portion (11b; 111b). Between the first internal tubular portion (12a; 112a) and the second internal tubular portion (12b; 112b), in direct correspondence with the position of the welding bead (15; 115), there is a tubular interposition element (20, 120), made of material resistant to heat and resistant to wear.</p> |
