China N80Q Seamless Tubing Manufacturer Landee Supplies N80Q Seamless Tubing, API 5CT, R2, Size 4-1/2 Inch, Black Painted Surface Treatment.
China API 5CT Seamless Piping Manufacturer Landee Supplies API 5CT Seamless Piping, N80Q, Size 4-1/2 Inch, Ends Design EU/RD, Painted Surface Treatment.