MRC Global (no. 9), NOW Inc. (no. 13) and Wolseley Industrial Group (no. 16) are all on the latest BIG 50 List, Industrial Distribution's annual list of the largest industrial distributors in the world. VMA associate member DistributionNOW is a subsidiary of NOW Inc.
All Big 50 companies are ranked according to 2016 total worldwide sales from North American operations, and all figures are reported in USD (in some cases converted based on the estimated exchange rate). Industrial Distribution obtains information for publicly-traded companies based on annual reports, earning statements and company verifications. For the privately-held companies, they rely on self-reported data and follow-up interviews. Recently published press releases and company website information is also used to supplement data.