lock seam

lock seam, lock joint

A joint or seam in sheet-metal roofing; the two edges are bent over in the form of hooks which are inserted in each other; then they are dressed down to form a seam.
References in periodicals archive ?
1) Technology to join dissimilar materials: adoption of '3D Lock Seam' (3DLS) structure, where the steel panel and aluminium panel are layered and hemmed together twice 2) Technology to prevent electrical corrosion: adoption of highly anticorrosive steel for the inner panel and a new form that assures the complete filling of the gap with adhesive agent 3) Technology to control thermal deformation: adoption of an adhesive agent with low elastic modulus (better ability to 'stretch') and optimised position of the 3D Lock Seam The advantages of these new technologies include elimination of a spot welding process required to join conventional steel door panels.
3) Technology to control thermal deformation: adoption of adhesive agent with low elastic modulus and optimized position of the 3D Lock Seam.
The shirts include Raglan sleeves to increase range of motion, offer smooth flat lock seams for added comfort, a front chest pocket making it more functional for the worker and are a cool 5.