ASTM A333 Grade 3 Oil Fired Boiler Tube System
|Album||View larger image|
|Heat Treatment Requirements||Normalizing or Quenched and Tempered|
|Surface treatment||Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting|
|Terms of Payment||L/C, T/T|
ASTM A333 Standard Specification for Seamless and Welded Steel Pipe for Low Temperature Service
Grades: Grade 3
|Grade 3||0.19 max||0.31-0.64||0.18-0.37||0.025 max||0.025 max|
1.Outer Dimensions: 19.05mm-457mm
3.Lengths: Lengths required shall be specified on order.If no definite lengths required, following practice applies:
Single Random — 17′ ~ 24′ lengths
Double Random — 36′ ~ 44′ lengths
Heat Treatment Requirements: All seamless and welded pipe shall be treated to control their microstructure by the following methods:
1.Normalizing per ASTM A333 Standard Specification for Seamless and Welded Steel Pipe for Low Temperature Service section 22.214.171.124; section 126.96.36.199 or section 188.8.131.52
2.Quenched and Tempered per A 333/A 333M – 05 section 184.108.40.206
3.Double Normalized and Tempered per A 333/A 333M – 05 section 220.127.116.11
Testing: Inspection and Test: 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.
1.For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot.
2.For small lots, at least one pipe shall be tested.
3.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.
5. Impact Test One notched bar impact test, consisting of breaking three specimens shall be made from each heat represtented in a heat-treatment load on specimens taken from the finished pipe.
Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Required Markings on Each Length (On Tags attached to each Bundle in case of Bundled Pipe):
Markings will adhere to prescribed specifications in A 999/A999M and be: Rolled, Stamped, or Stenciled (Mfrs. Option)
Packing: Bare packing bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
Weight of bundle – up to 5000 kg upon request of customer.