Diameter: 219-610mm
Thickness: 4.5-16mm
Length: 6-12m/pcs
Standard: API Spec 5L. Grade: GB/T9711: L210-L485. API 5L : A-X70..H40. J55. K55.N80
External Coating: 2PE. 3PE. FBE
Internal Coating: Cement or bitumen
