ASTM A53 standard specifies requirements for the fabrication of black as well as hot-dipped galvanized welded and seamless steel pipe for general fluid transfer and mechanical structural purposes.
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ASTM A53 Scope
ASTM A53 Type and Grade
ASTM A53 End Finish
ASTM A53 Raw Materials
Heat Treatment
Chemical Requirements
Mechanical Properties
ASTM A53 Other Experimentation
Galvanized
ASTM A53 Dimensional Tolerances
Pipe Weight Chart and Schedule 40 and Schedule 80
Product Marking
Appliance
Certification
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ASTM A53 Scope
Seamless and welded steel pipes from DN 6 to 650 mm with wall thicknesses according to ASTM A53 Tables X2.2 and X2.3, as well as galvanized steel pipes.
ASTM A53 Type and Grade
Pipe Type
Type F:
Furnace Butt-Welded Pipe - Continuously welded pipe. Produces multiple lengths of pipe, which are then cut into individual lengths and welded by mechanical pressure created by hot rolls.
Note: Type F is not available with flanges
Type E:
resistance-welded pipe. A longitudinal butt joint in a single length, or in a plurality of lengths from a crimped casing, then cut into individual lengths, having a longitudinal butt joint, wherein the merger is produced by heat gained from the resistance of the current in the circuit in which the pipe is situated, and by the application of pressure.
Note: Typе E is furnished either nonexpanded or cold expanded at the option of the manufacturer.
Type S:
Seamless Piping - Weldless Pipe Joints It is manufactured from hot-worked steel, if necessary, by subsequent cold-working of the hot-worked tubular product to produce the desired shape, size, and properties.
Grade Group
Grade A:
This is the base grade and is suitable for general low-pressure fluid transfer and some structural applications.
Grade A is preferred when pipes need to be tightly coiled or cold bent.
Grade B:
This is a higher tensile strength and pressure resistance grade than Grade A and is typically used in higher-pressure applications.
ASTM A53 End Finish
Flat End: the ordinary form of the end of the pipe is not processed, applicable to the need for further processing of the situation.
Threaded End: The end of the pipe is processed with threads to facilitate pipe connection.
Beveled End: The pipe end is beveled, and mainly used for welding connections.
ASTM A53 Raw Materials
Steel for seamless and welded pipes should be produced by one or more of these processes:
Open Furnace, Electric Furnace, or Alkaline Oxygen.
Heat Treatment
Welds in Grade B Type E or Type F pipe shall be heat-treated after welding to at least 1000 F [540°C] so that no untempered martensite exists.
Chemical Requirements
Mechanical Properties
ASTM A53 Other Experimentation
Bend Test
DN 50（NPS 2）or smaller: a sufficient length of pipe shall be capable of being bent cold through 90° arounda cylindrical mandrel, the diameter of which is twelve times thespecified outside diameter of the pipe, without developingcracks at any portion and without opening the weld.
Close coiling:the pipe shall stand being bent cold through 180°around a cylindrical mandrel, the diameter of which is eight times the specified outside diameter of the pipe, without failure.
Double-extra-strong pipe over DN 32 (NPS 1 1/4) : not need be subjected to the bend test.
Flattening Test
Welded pipe over DN 50 mm in extra-strong weight or lighter: shall be flattening test.
Seamless Pipe: No testing.
Hydrostatic Test
Plain-End Pipe: Applicable pressure according to Table X2.2.
Threaded and Coupled Pipe: Applicable pressure according to Table X2.3.
Nondestructive Electric Test
If a non-destructive electrical test has been performed, the length shall be labeled with the letters "NDE".
Galvanized
ASTM A53 Galvanized pipe shall be galvanized internally and externally by the hot dip process.
The zinc used for the coating shall be any grade of zinc conforming to Specification B6. The galvanized pipe shall be free from uncoated areas, blisters, flux deposits, and gross dross inclusions. Lumps, projections, globules, or heavy deposits of zinc which will interfere with the intended use of the material will not be permitted.
The surface of the steel pipe shall have a zinc coating of not less than 0.40 kg/m² by calculation of the weight and area of the galvanized coating.
ASTM A53 Dimensional Tolerances
| List | Sort | Scope |
| mass | Theoretical weight = length x specified weight (in accordance with the requirements in tables 2.2 and 2.3) |
±10% |
| Diameter | DN 40mm[NPS 1/2] or smaller | ±0.4mm |
| DN 50mm[NPS 2] or larger | ±1% | |
| Thickness | minimum wall thickness shall be in accordance with Table X2.4 | min 87.5% |
| Lengths | lighter than extra-strong(XS) weight | 4.88m-6.71m (not more than 5 % of the total number of threaded lengths furnished being jointers(two pieces coupled together)) |
| lighter than extra-strong(XS) weight (plain-end pipe) |
3.66m-4.88m (Not more than 5% of the total number) |
|
| XS, XXS, or thicker wall thickness | 3.66m-6.71m ( no more than 5% total of pipe 1.83m-3.66m） |
|
| lighter than extra-strong(XS) weight （double-random lengths） |
≥6.71m (Minimum average length of 10.67m) |
Pipe Weight Chart and Schedule 40 and Schedule 80
If you want to know more about ASTM A53's steel pipe weight table, you can click for more information.
Product Marking
→ Manufacturer's name or logo
→ Specification number
→ Size (NPS and weight class, plan number, or specified wall thickness; or specified outside diameter and specified wall thickness)
→ Grade (A or B)
→ Pipe type (F, E or S)
→ For seamless pipe there are also hydraulic and non-destructive electrical two test items need to pay attention to, if you do which test items, which test will be marked (hydraulic labeling test pressure, non-destructive electrical labeling DNE).
Appliance
Low-pressure liquid transportation: including water, gas, and air, etc.
Structural uses: such as building supports, bridge beams, etc.
Steam and hot water systems: heating pipes and industrial steam lines.
Building and construction: piping systems for supporting structures, building scaffolding, and transporting and arranging wires and cables.
Certification
Provide a Certificate of Compliance (MTC) and test report stating that the material has been manufactured, sampled, tested, and inspected in accordance with ASTM A53 and found to be in compliance.
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Post time: Mar-07-2024