This research describes an attempt to establish a pedagogically useful list of the most frequent formulaic sequences for engineering undergraduates who need to read the textbooks of their fields in English. The Engineering English Formulae/Formulaic Sequences List (EEFL) was derived from a corpus containing 4.57 million tokens of one hundred college textbooks across twenty engineering subjects. In consideration of formulae for widespread use and pedagogical relevance, a series of criteria were applied. Comparable to a list of 1,000 high-frequency individual words, a total of 1,000 two- to six-word sequences were selected into the EEFL and they accounted for 25.73% of the running words in the Engineering Textbook Corpus. The EEFL, not highly technical in nature, contains the most commonly-used multi-word units traversing the subfields of the engineering domain and engineering majors may encounter these word sequences very often. For matriculating engineering students, the present EEFL and the EEWL (Engineering English Word List common to engineering subjects) may be mutually complementary in providing a pathway to the engineering register and may be helpful for ESP teachers without a background of science and technology when preparing engineering English teaching materials for an EST course required by most engineering-related departments.