Air Liquide America and Woodworth Group Sign Nitrogen Supply Equipment Contract Air Liquide America L.P., Houston, Tex., and The Woodworth Group, Detroit, Mich., have reached agreement to provide the ALNAT(tm) HP high-pressure nitrogen supply system for Woodworth Inc.'s new gas quench cell. The ALNAT(tm) HP system provides high-pressure gas (30-bar) without the use of gas compressors reducing or eliminating both operational and maintenance costs. The new unit will support Woodworth Inc.'s high-pressure gas quenching process.