Henan BBN Steel co.,ltd located in zhengzhou ,henan province of china. Since it was established in 2008. Based on the domestic rich product resources and the great steel demand of the international market, BBN'service has already spread many countries in Europe , America, Southeast Asia, Middle East, South America, Africa, etc, and BBN has won an outstanding reputation for its professional exporting steel products BBN Steel is the most professional steel exporter in China, for we can provide the most comprehensive steel grade in the different standard,like: ASTM / ASME / AISI / SAE / API / EN / JIS / ST / SB / ISO / DIN / NFA / BS / IS / API / EU / SEW / UNI / UNE