ASTM A333 Grade 11 Seamless or Welded Steel Pipe for Low Temperature
- Model
- Grade 11
Item specifics
- Heat Treatment Requirements
- Normalizing or Quenched and Tempered
- Surface treatment
- Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
- Outside Diameter
- 40-400mm
Review
Description
Quality Standard:
ASTM A333 Standard Specification for Seamless and Welded Steel Pipe for Low Temperature Service
Chemical Copmosition(%):
Grade | C | Mn | Si | P | S | Cr | Ni | Mo | Co |
Grade 11 | 0.10 max | 0.60 max | 0.35 max | 0.025 max | 0.025 max | 0.50 max | 35.0-37.0 | 0.50 max | 0.50 max |
Size Range:
1.Outer Dimensions: 19.05mm-457mm
2.Wall Thickness:2.0mm-60mm
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 4.2.1.1; section 4.2.1.2 or section 4.2.1.3
2.Quenched and Tempered per A 333/A 333M – 05 section 4.2.2.1
3.Double Normalized and Tempered per A 333/A 333M – 05 section 4.2.2.2
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.
4.Hydrostatic Test
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.
