Carbon steel seamless / welded pipe & tu

Specification: ASTM A53, A106, A179, API 5L, BS1387...
Surface: Black, black varnish coating, zinc-coating,
End type: plain end, beveled end; with / without caps on ends
ASTM A53: (black or galvanized)
Grade: Gr. A, Gr. B
Size range: OD 1/2" ~ 8" (23.1 ~ 219.1mm) X WT Sch40 ~ Sch80 (2.77 ~ 6.35mm)
ASTM A106:
Grade: Gr. A, Gr. B
Size range: OD 1/2" ~ 14" (23.1 ~ 355.6mm ) X WT Sch40 ~ Sch80
ASTM A179:
Size range: OD 5/8" ~ 5" (15.88 ~ 127.0mm) X WT BWG20 ~ BWG10 (0.91 ~ 3.4mm)
API 5L:
Grade: Gr. A, Gr. B, X42...etc.
Size range: OD 1/2" ~ 14" (23.1 ~ 355.6mm ) X WT Sch30 ~STD ~ Sch160
BS 1387: (black or galvanized)
Size range: OD 1/2" ~ 6" (21.0 ~ 164.1mm) X WT 2.0 ~ 5.4mm
* Other specification available on request.