A53 Seamless And Welded Carbon Steel Pipe

A53 seamless and welded carbon steel pipe
a53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless1


1, Steel No.
C(max)a
Mn
P(max)
S(max)
Si(min)
Cu(max)a
Ni(max)a
Cr(max)a
Mo(max)a
V(max)a
Grade A:
0.25
0.95
0.05
0.045
0.4
0.4
0.4
0.15
0.08
0.08
Grade B:
0.3
1.2
0.05
0.045
0.4
0.4
0.4
0.15
0.08
0.08
B These five elements combined shall not exceed +/-1 %.
2, Diameter & Tolerance:
For pipe = NPS 11⁄2 [DN 40], the outside diameter at any point shall not vary more than 1⁄64 in. [0.4 mm].
For pipe =NPS 2 [DN 50], the outside diameter shall not vary more than +/-1%.

3, Tensile Requirements
Grade A
Minimum Yield: 30, 000 PSI (205MPa)
Minimum Tensile: 48, 000 PSI (330MPa)

Grade B
Minimum Yield: 35, 000 PSI (240MPa)
Minimum Tensile: 60, 000 PSI (415MPa)

4, Wall Thickness & Tolerance:
Wall thickness: Scheduled
Wall Tolerance: +/- 12.5%
5, Galvanized
1), Zinc: The zinc used for the coating shall be any grade of zinc conforming to Specification B 6
2), Weight of Coating The weight of zinc coating shall be not less than 1.8 oz/ft2[0.55 kg/m2] as determined from the average results of the two specimens taken for test in the manner prescribed in 19.5 and not less than 1.6 oz/ft2[0.49kg/m2] for either of these specimens. And testing the weight of zinc according to ASTMB90

6, Common Uses:

- Low pressure systems
- Structural applications
- Mechanical components
- Bollards
- Casing