Daim ntawv teev nqi
-                API 5L / ASTM A53 GR.B, ERW Carbon Steel Yeeb NkabNyeem ntxiv
-                API 5L / ASTM A106 GR.B, Seamless Carbon Steel Yeeb NkabNyeem ntxiv
-                API 5L / ASTM A106 GR.B, SSAW carbon steel yeeb nkabNyeem ntxiv
-                API 5L / ASTM A106 GR.B, LSAW Carbon Steel Yeeb NkabNyeem ntxiv
-                API 5L / ASTM A106 GR.B, ERW Carbon Steel Yeeb NkabNyeem ntxiv
-                API 5L / ASTM A106 GR.B, Seamless Carbon Steel Yeeb NkabNyeem ntxiv
 
                 




