ASTM A53 Grade A Seamless Steel Pipe
ASTM A53 / A53M Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A53 Grade A Seamless Steel Pipe Dimensional Range & Specification
Outside Diameter ：21.3mm——219mm
Wall thickness：1.8mm——15mm
Length：6000mm、12000m or specified length as required.
Materials and Manufacture
The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric-furnace, or basic-oxygen.
When steels of different grades are sequentially strand cast, identification of the resultant transition material is re- quired. The producer shall remove the transition material by any established procedure that positively separates the grades。
The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding to a minimum of 1000°F [540°C] so that no untempered martensite remains, or otherwise processed in such a manner that no untempered martensite remains.
When pipe is cold expanded, the amount of expansion shall not exceed 11⁄2 % of the outside diameter pipe size.
ASTM A53 Grade A Seamless Steel Pipe Chemical Composition(%)
| Material |
Chemical Composition(%) |
| C |
Mn |
P |
S |
Cu |
Ni |
Cr |
Mo |
V |
| Grade A |
≤0.25 |
0.95 |
≤0.05 |
≤0.045 |
≤0.40 |
≤0.40 |
≤0.40 |
≤0.15 |
≤0.08 |
ASTM A53 Grade A Seamless Steel Pipe Mechanical Properties
| Material |
Mechanical Properties |
| Tensile Strength(MPa) |
Yield Strength(MPa) |
| Grade A |
≥330 |
≥205 |
Seamless Steel Pipe
| ASTM / ASME |
| Product Name |
Executive Standard |
Dimension (mm) |
Steel Code / Steel Grade |
| Black and Hot-Dipped Zinc-Coated Seamless Steel Pipes |
ASTM A53 |
Ø10.3~1200 x WT1.0~150 |
Gr.A, Gr.B, Gr.C |
| Seamless Carbon Steel Pipes for High Temperature Service |
ASTM A106 |
Ø10.3~1200 x WT1.0~150 |
Gr.B, Gr.C |
| Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes |
ASTM A179 |
Ø10.3~426 x WT1.0~36 |
Low Carbon Steel |
| Seamless Carbon Steel Boiler Tubes for High Pressure |
ASTM A192 |
Ø10.3~426 x WT1.0~36 |
Low Carbon Steel |
| Seamless Cold-Drawn Intermediate Alloy Steel Heat-Exchanger and Condenser Tubes |
ASTM A199 |
Ø10.3~426 x 1.0~36 |
T5, T22 |
| Seamless Medium-Carbon Steel Boiler and Superheater Tubes |
ASTM A210 |
Ø10.3~426 x WT1.0~36 |
A1, C |
| Seamless Ferritic & Austenitic Alloy Steel Boiler, Superheater & Heat-Exchanger Tubes |
ASTM A213 |
Ø10.3~426 x WT1.0~36 |
T5, T9, T11, T12, T22, T91 |
| Seamless Carbon and Alloy Steel for Mechanical Tubing |
ASTM A333 |
Ø1/4"~42" x WT SCH20~XXS |
Gr.1, Gr.3, Gr.6 |
| Seamless & Welded Carbon Steel Pipes and Alloy Steel Pipes for Low Temperature Use |
ASTM A334 |
Ø1/4"~4" x WT SCH20~SCH80 |
Gr.1, Gr.6 |
| Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes |
ASTM A556 |
Ø10.3~426 x WT1.0~36 |
A2, B2 |
Bending Requirements
For pipe NPS 2 [DN 50] and under, a sufficient length of pipe shall be capable of being bent cold through 90° around a cylindrical mandrel, the diameter of which is twelve times the outside diameter of the pipe, without developing cracks at any portion and without opening the weld.
Double-extra-strong pipe over NPS 1 1 ⁄ 4 [DN 32] need not be subjected to the bend test.
Tests and Inspection
Flattening Test
Flaring Test
Hardness Test
Hydrostatic or Nondestruction Electric Test ( Eddy Current and Ultrasonic Testing)
Hydrostatic Testing
Hydrostatic inspection test pressures for plain end and threaded and coupled pipe are specified. Hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and electric-resistance-weld pipe.
Test Methods
The longitudinal tension test specimen shall be taken from the end of the pipe or, for continuous-welded pipe, it shall be permissible to be taken from the skelp, at a point approxi- mately 90° from the weld, and shall not be flattened between gage marks. The sides of each specimen shall be parallel between gage marks. If desired, the tension tests are permitted to be made on the full section of pipe. When impracticable to pull a test specimen in full section, the standard 2-in.
Transverse weld test specimens from electric- resistance-welded pipe shall be taken with the weld at the center of the specimen. All transverse test specimens shall be approximately 11⁄2 in. [40 mm] wide in the gage length and shall represent the full wall thickness of the pipe from which the specimen was cut.
Test specimens for the bend and flattening tests shall be taken from pipe. Test specimens for the flattening test shall be smooth on the ends and free from burrs.
All specimens shall be tested at room temperature.
ASTM A53 Gr.A Black and Hot Dipped Zinc-Coated Seamless Steel Pipes,ASTM Specification A53 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.
