ASTM Specification A53 covers seamless and welded, black and hot-dipped galvanized nominal (average) wall pipe for coiling, bending, flanging and other special applications, and is suitable for welding.
Grade and Chemical Composition (%) Of ASTM A53 Grade B ERW Steel Pipe
| Type | Grade | C≤ | M≤ | P≤ | S≤ | Cu≥ | Ni≤ | Mo≤ |
|
Type E
(electric-resistance welded)
|
A | 0.25 | 0.95 | 0.05 | 0.045 | 0.4 | 0.4 | 0.08 |
| B | 0.3 | 1.2 | 0.05 | 0.045 | 0.4 | 0.4 | 0.08 |
Mechanical Properties Of ASTM A53 Grade B ERW Steel Pipe
| Grade | Rm Mpa Tensile Strength | Mpa Yield Point | Elongation | Delivery Condition |
| A | ≥330 | ≥205 | 20 | Annealed |
| B | ≥415 | ≥240 | 20 | Annealed |
A53 Test requirements for seamless and welded steel pipes
Hydrostatic test pressures are specified for plain, threaded and connected pipes. The hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and ERW pipe.
Mechanical testing:
Tensile test: For NPS 8 and larger sizes of ERW, two transverse tests are required, one across the weld and the other opposite the weld.
Crush Test: For NPS 2 and larger, STD and XS wall ERW (not required for XXS pipe)
Bend test (cold): for NPS 2 and below, XS wall and below; for NPS 1-1/4 and below, XXS wall
GNEE Supply A53 B Seamless Pipe
