Steel Derrick Rust is Oil Field Problem

Wood Stand Nearly 90,000 Hours That Eats the Life Out of

in the Salt Spray Metal

The manufacturer of a special metal derrick protection preparation makes use of a double page display advertisement in a recent issue of the "Oil and Gas Journal," to exploit the two coatings which,. they say, will protect metals employed in the oil fields against "er.osion, rust and corrosion." In tests, they say, specimens treated with their preparations withstood 1,86O hours of salt spray, while rust resulted after 316 hours in the spray to electrolytic galvanized coating; hot dip galvanized coating withstood 650 hours, and sherardized coating withstood, 367 hours before forming rust. A standard nickel-plated coating was almost entirely eaten away alter 24 hours."

Wood Preserved by Salt Atmosphere

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