API 5L Gr.BX42 X46 X52 X56 X60 X65 X70 TPCO SMLS tubes en acier sans soudure tuyaux d'huile tuyaux en acier au carbone ms tuyau en acier au carbone tuyau sans soudure en acier tube sans soudure
API, API 5L, ASTM A106-2006, ASTM A53-2007, ASTM A210-1996, ASTM A199, DIN 1626, DIN 1629/4, DIN 17175, BS 1387, JIS G3461-2005, GB/T 8163-1999, GB/T 8162-1999
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.