... .T max 50MMcarbon steel pipe All of the products we are supplying can reach the international standard like: ASTM, JIS, DIN, EN, API, ... . Production in our facilities is also realized in accordance with the international standards such as TS, DIN, AWWA, ASTM, BS, UNI, ... max 50MM carbon steel pipe All of the products we are supplying can reach the international standard like: ASTM, JIS, DIN, EN, API, ...