Steel grade: ASTM A335 P11
Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
|Tensile strength, min, (MPa)||415 Mpa|
|Yield strength, min, (MPa)||205 Mpa|
|Elongation, min, (%), L/T||30/20|
Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
A / N+T
N+T / Q+T
Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.
P11 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].