black painting carbon steel pipe 1 Standard: ANSI B36.10 2 Material:ASTM A53 3 ... 45#, A53-A369, ST35-ST52, Q195-Q345,20#, A53(A,B), A106(B,C), St37, St37-2, Q235SIZE:2 ... ,STD,XS,XXS LENGTH:Max 12 MetersSURFACE TREATMENT:Black painting, black varnish, Glavanized or as per customer's request ... All the productions process are according to ISO9001:2000 standard strictly.5. Application: for use in the Pulp ...