Construction materials made of metal, namely, metal pipes for use as pipe lines in the oil, gas, and water industry; steel pipes for use offshore as tubulars, cans, legs, piles, bracings, conductors, risers and tethers; steel pipes for use in the construction industry for bridges, stadiums, and high-rises; steel pipes for use in steel structures under water as piles, dolphins, and anchor piles; metal machinery pipes for use in the paper industry as felt rolls, wire rolls, press rolls, dryers,...