... SERIES: SEAMLESS STEEL PIPES FOR USE IN LOW AND MEDIUM PRESSURE BOILERS, PETROLEUM CASING PIPES, SHIPS, FLUID CONVEYANCE, PETROLEUM CRACKING, CHEMICAL ... PIPES ACCORDING TO THE STANDARDS SUCH AS GB,ASTM,API 5L,API 5CT, DIN, AND JIS. OUR PRODUCTS HAVE BEEN EXPORTED TO DOZENS ... OF COUNTRIES AND REGIONS IN THE WORLD SUCH AS SOUTHEAST ...