Z275 continuous hot sheet galvanization is suitable for soil with a pH between 6.5 and 8.5
(Lifespan estimated at 25 years, give or take 5 years.)
ZAM 300 continuous hot sheet or hot dip galvanization is suitable for soil with a pH lower than 6.5 or higher than 8.5, or for long-lasting use in alkaline soil (more than 30 years).