Celebrating 100 years in 2025, Naylor spiralweld steel pipe is manufactured in accordance with ASTM A-139, ASTM A-252, and ASTM A-211. Applications for Naylor spiralweld in mining service include water, high and low pressure air, ventilation, tailings or slurry lines and shaft casing. It is available in carbon and abrasion-resistant steel in diameters from 4 in. to 96 in. and thicknesses from 1/16 in. to 1/2 in. Also available are the necessary fittings and couplings, including the exclusive Naylor heavy duty wedgelock coupling, coatings and linings to complete your pipe systems.