| 摘要 |
1,061,577. Joining metal sheets. TECHNIGAZ. June 16, 1964 [Aug. 16, 1963], No. 24889/64. Heading E1K. A metal sheet for forming a corner for tanks for hot or cold liquids e.g. liquefied gases is formed by bending a flat sheet along a line Z, Z' and also along three lines at right angles to this line to form two internal corrugations X2, B and A1, X5 the metal at the junction of the corrugations being bent along pairs of lines B, A; A', A and B, Al, A', Al from the ends of the crests, each pair converging at the line Z, Z'. |
