Seamless Tube Industry

Seamless Tube Industry is a Pennsylvania historical marker in Ellwood City, Lawrence County, dedicated 1994.

Lawrence County · dedicated 1994 · SE corner of PA 351 (Lawrence Ave.) at 7th St., Ellwood City

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A block away was the plant in which Ralph C. Stiefel, the Swiss-born engineer, invented the rotary piercing process for making steel tubing, 1895. He helped found Ellwood Weldless Tube Co., which became a nucleus for National Tube Div. of U.S. Steel.

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under a mile from where William Gabby lived in the 1760s

what this marker records spans 1777 to 1789, overlapping William Gabby's years here

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Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov

Seamless Tube Industry

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