| Explosion-proof electrical equipment. Part 7. Protection type e.
Электрооборудование взрывозащищенное. Часть 7. Защита вида е. |
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GOST 12.2.022-80Conveyers. |
SN 496-77Provisional Guidelines for Designing Surface … |
GGTN 4660Approval of industrial safety rules for oil … |