ASTM A249 Stainless Steel Welded Tubes
Austenitic steel has good resistance to oxidation and acid resistance, can work for a long time in 540 ~ 875 ℃, but prone to brittle damage of grain boundary corrosion.
Stainless Steel Welded Tubes Specification :
| Specifications | ASTM A249 / SA 249 |
| Dimensions | ASTM, ASME and API |
| Size | 1/8″NB TO 30″NB IN |
| Welded 317L Tubes | 1/2" NB - 16" NB |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | ASTM A 249 TP 317L Welded Tubes |
| Specialized in | Large Diameter Size |
| Length | Single Random, Double Random & Cut Length. |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| End | Plain End, Beveled End, Treaded |
A249 Welded Pipe Grade List
| Grade | Specification |
| Stainless 304/304L, 304/304H | ASTM A249/SA249 |
| Stainless 309S | ASTM A249/SA249 |
| Stainless 310S | ASTM A249/SA249 |
| Stainless 316/316L, 316/316H | ASTM A249/SA249 |
| Stainless 317/317L | ASTM A249/SA249 |
| Stainless 321/321H | ASTM A249/SA249 |
| Stainless 347/347H | ASTM A249/SA249 |
GNEE A249 stainless steel welded pipe inspection:
Flattening test
A flattening test must be conducted on each end specimen of one finished pipe (other than the one used for the flaring test) in each batch.
Flange test
In each batch, one specimen from each end of a finished pipe must be used for a flange test, other than the specimens used for the flattening test.
Reverse bending test
One specimen per 1500 feet [450 meters] of finished pipe must be subjected to a reverse bend test.
Hydrostatic or non-destructive electrical testing
Each pipe shall be subjected to a hydrostatic test or a non-destructive electrical test. The purchaser may specify which test is used.
Grain size
Grain size determinations for grades TP309H, TP309HCb, TP310H and TP310HCb must be carried out on the same number of steel pipes specified.
A249 Welded Stainless Steel Pipe
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