Gangsteel located at Zhengzhou city of henan province, a city of prosperous economy and convenient transportation, is joint stock company in China on the base of international,domestic steel markets and processing steel in China We are specialized in super thick steel plate, max weight/per is 28.6mt. Thick:6mm to 700mm Width:1500mm-4020mm Length:3000mm to 27000mm Ultrasonic Test adopt standard: