... .Standard: API 5L/5CT, EN10217, EN10219, ASTM A53, ASTM A2526.Steel grade: GR.A/B, X42, X46, X52, X56, X60, X65 ... , building construction, water conveying, steel structure, shipbuilding.....13.Package: small sizes in bundled packed by steel strips , and big sizes in loose14.Brand: Huilitong15.Loading ... LC20.Others: as per costomer's requirement API hot rolled /cold drawn welded carbon steel pipe