... PSL2 2)ASTM A106,ASTM A53 Carbon Steel Pipes as per ASTM A 106 Gr A / B / C ... facilities is also realized in accordance with the international standards such as TS, DIN, AWWA, ASTM, BS, UNI, JIS, GOST ... PSL2 2)ASTM A106,ASTM A53 Carbon Steel Pipes as per ASTM A 106 Gr A / B / C ... facilities is also realized in accordance with the international standards such as TS, DIN, AWWA, ASTM, BS, UNI, JIS, GOST ...