Application: Conveying gas,water,and oil in both the oil and natural industries Tubular goods for petroleum and natural gas industries Production Standard, Grade, Steel No: API 5L PSL1 L175/A25, L210/A, L245/B, L290/X42, L320/X46, L360/X52, L485/X70 PSL2 L245R/BR, L290N/X42N, L320N/X46N, L360N/X52N, L415/X60N API 5CT PSL1, PSL2, PSL3, H40, J55, K55, N80 GB/T 9711.1 L175, L210, L245, L290, L320, L360 GB/T 9711.2 L245NB, L290NB, L360NB GB/T 9711.3 L245NC, L290NC, L360NC Size: customized Delivery Condition:Annealed, Normalized, Normalized and Tempered Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness), Drift Test, Surface and Dimension Test,NDE, Hydrostatic Test, MT Surface Treatment:Oil-dip, Shot Blasting, Varnish