This is a really great article. Bill Bonekemper at Helical Pile World presents a detailed look at helical pile products manufactured by seven of the industry’s leading manufacturers – Ram Jack Systems Distribution, MacLean Power Systems – Civil Products Division – Foundation Supportworks – Hubbell-Chance – IDEAL Foundation Systems – Earth Contact Products and Empire Piers . . .
Take a look at Bonekemper’s article: A Close Up Look at Seven Helical Pile Manufacturers’ Products.