Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe
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ASTM A53 Carbon Steel Pipe Specifications


ASTM A53 Carbon Steel Pipe Specifications

Specifications A/SA53 NPS 1/4" - 30" Schedules 10 through 160, STD, XH and XXH

Scope

 Covers Seamless and Welded, Black and Hot-Dipped Galvanized nominal
(average) wall pipe for coiling, bending, flanging and other special purposes
and is suitable for welding. Continuous-Welded pipe is not intended for flanging.
Purpose for which pipe is intended should be stated on order.

Chemical Requirements

　 　 Type S 
(seamless)		 　 Type E 　 Type F
　 　 　 (electric-
resistance welded)		 　 (furnace-
welded pipe)
　 Grade A Grade B 　 Grade A Grade B 　 Grade A
Carbon max.  0.25% 0.30% 　 0.25% 0.30% 　 0.3%
Manganese 0.95 1.2% 　 0.95% 1.2% 　 1.2%
Phosphorous, max. 0.05% 0.05% 　 0.05% 0.05% 　 0.05%
Sulfur, max.  0.045% 0.045% 　 0.045% 0.045% 　 0.045%
Copper, max. 0.40% 0.40% 　 0.40% 0.40% 　 0.4%
Nickel, max.  0.40% 0.40% 　 0.40% 0.40% 　 0.4%
Chromium, max.  0.40% 0.40% 　 0.40% 0.40% 　 0.4%
Molybdenum, max.  0.15% 0.15% 　 0.15% 0.15% 　 0.15%
Vanadium, max.  0.08% 0.08% 　 0.08% 0.08% 　 0.08

ASTM A53 Carbon Steel Pipe

Permissible Variations in Outside Diameter

Outside Diameter at any point shall not vary from standard specified more than:
　

For NPS 1 1/2 and Smaller Sizes 　 For NPS 2 and Larger Sizes
1/64" 　 1/32" under 　 1% over 　 1%under

 

Mechanical Tests Specified

Tensile Test -- Transverse required on ERW for NPS 8 and large.

Sending Test (Cold) -- STD and XS-NPS 2 and under XXS-NPS 1 1/4 and under.

　

　 Degree of Bend 　 Diameter of Mandrel
For Normal A53 Uses 90 　 12 x nom dia. of pipe
For Close Coiling 180 　 8 x nom dia. of pipe

Flattening Test -- NPS 2 and larger STD and XS. (Not required for XXS pipe.)

 

Permissible Variations in Wall Thickness

The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.

　

Number of Tests Required

Seamless and Electric-Resistance-Welded -- Bending, flattening, tensile on one length of pipe from each lot of 500 lengths or less of a size.

Continuous-Weld -- Bending, flattening, tensile

NPS 1 1/2 & smaller 　 NPS 2 & larger
one / 25 tons 　 one / 50 tons

 

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