... 12mm Material:Q195,Q195+Q235, Q235,Q345 Length:2m-12m 1.Standard: ASTM A106,ASTM A53,GB/T8162,GB/T8163, ... Surface treatment: black painted, varnished, galvanized, or anti-corression treatment.4.Pipe end: plain end, bevelled end with plastic caps protected ... EuropeNorth AmericaMid East/AfricaCentral/South AmericaAsiaWestern EuropeAustralasia carbon steel according to all kinds of standard erw pipes