Tubería de acero con bajo contenido de carbono de aceite Rade B/X42/X52/X60/X70 L245/L290/S320/L360/L390/L415 tubo de acero sin costura de acero al carbono tubo sin costura
1.Black varnish painted or oil painted, 2PE.3PE on the surface.
2.Plain,square cut or beveling ene by caps.
3.In hexagon or triangle buddle with steel strips.
4.Other as the customer's requires.