| 摘要 |
<p>The present application relates to a method of securing in abutment two rectangular section tubular metal members (23, 24) comprising punching or drilling at least two first holes (30, 32) in one wall (31, 33) each of the metal members (23, 24) and acting through the first hole (30, 32) to each respective section holes (34, 36) to each first hole (30, 32) in the opposite wall (35, 37) of each metal member (23, 24) to form an outwardly extending collar (39).</p> |
