The process of Lsaw steel pipe:
Plate feeding → Edge Milling and Beveling → Board Probe → Edge Crimping →molding→Slag→Track Pre-Welding → Tab Welding → Inside Welding → Slag → Outside Welding → Tab Removal → Ultrasonic Inspection → X-ray Inspection → Mechanical Expansion → Flame Flat → Hydro-static Testing → Ultrasonic Inspection for pipe end and welding seam → Weld and Pipe End X-ray Inspection → Tube end weld grinding → End Facing and Beveling → Weighing and measuring → Spray paint Marking → Final Inspection → Storage → Storage and Shipment
A53 PIPE SPECIFICATIONS
A/SA53
NPS 1/8″ – 26″
Schedules 10 through 160, STD, XH and XXH
ASTM A53 pipe (also referred to as ASME SA53 pipe) is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. It is suitable for welding and for forming operations involving coiling, bending, and flanging, subject to certain qualifications.
American Piping Products stocks a full range of A53 pipe (SA53 Pipe) in:
Grade B
NPS 1/8” to 26” diameter
Schedules 10 through 160, STD, XH and XXH
Scope
ASTM A53 pipe 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.
Looking for specific post-production services? See our full list.
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. The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding.
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.
Permissible Variations in Weights per Foot
Plus or minus 10%
Permissible Variations in Outside Diameter
Outside Diameter at any point shall not vary from standard specified more than:
Download the full product catalog.
Tensile Requirements
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.
Mechanical Tests Specified
Tensile Test — Transverse required on ERW for NPS 8 and larger.
Flattening Test — NPS 2 and larger XM and lighter walls.
Plate feeding → Edge Milling and Beveling → Board Probe → Edge Crimping →molding→Slag→Track Pre-Welding → Tab Welding → Inside Welding → Slag → Outside Welding → Tab Removal → Ultrasonic Inspection → X-ray Inspection → Mechanical Expansion → Flame Flat → Hydro-static Testing → Ultrasonic Inspection for pipe end and welding seam → Weld and Pipe End X-ray Inspection → Tube end weld grinding → End Facing and Beveling → Weighing and measuring → Spray paint Marking → Final Inspection → Storage → Storage and Shipment
A53 PIPE SPECIFICATIONS
A/SA53
NPS 1/8″ – 26″
Schedules 10 through 160, STD, XH and XXH
ASTM A53 pipe (also referred to as ASME SA53 pipe) is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. It is suitable for welding and for forming operations involving coiling, bending, and flanging, subject to certain qualifications.
American Piping Products stocks a full range of A53 pipe (SA53 Pipe) in:
Grade B
NPS 1/8” to 26” diameter
Schedules 10 through 160, STD, XH and XXH
Scope
ASTM A53 pipe 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.
Looking for specific post-production services? See our full list.
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. The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding.
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Chemical Requirements |
Type S
(seamless)
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Type E |
Type F |
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Download Chart |
(electric-
resistance welded)
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(furnace-
welded pipe)
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Grade A |
Grade B |
Grade A |
Grade B |
Grade A |
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Carbon max. % |
0.25 |
0.30* |
0.25 |
0.30* |
0.3 |
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Manganese % |
0.95 |
1.2 |
0.95 |
1.2 |
1.2 |
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Phosphorous, max. % |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
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Sulfur, max. % |
0.045 |
0.045 |
0.045 |
0.045 |
0.045 |
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Copper, max.% |
0.40 |
0.40 |
0.40 |
0.40 |
0.4 |
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Nickel, max. % |
0.40 |
0.40 |
0.40 |
0.40 |
0.4 |
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Chromium, max. % |
0.40 |
0.40 |
0.40 |
0.40 |
0.4 |
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Molybdenum, max. % |
0.15 |
0.15 |
0.15 |
0.15 |
0.15 |
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Vanadium, max. % |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
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.
Permissible Variations in Weights per Foot
Plus or minus 10%
Permissible Variations in Outside Diameter
Outside Diameter at any point shall not vary from standard specified more than:
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For NPS 1 1/2 and Smaller Sizes |
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For NPS 2 and Larger Sizes |
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1/64″ over |
1/64″ under |
1% over |
1%under |
Download the full product catalog.
Tensile Requirements
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Seamless and Electric-resistance-welded |
Continuous-Welded |
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Grade A |
Grade B |
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Tensile Strength, min., psi |
48,000 |
60,000 |
45,000 |
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Yield Strength, min., psi |
30,000 |
35,000 |
25,000 |
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.
Mechanical Tests Specified
Tensile Test — Transverse required on ERW for NPS 8 and larger.
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Degree of Bend |
Diameter of Mandrel |
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For Normal A53 Uses |
90 |
12 x nom dia. of pipe |
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For Close Coiling |
180 |
8 x nom dia. of pipe |
Flattening Test — NPS 2 and larger XM and lighter walls.
Lengths
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Standard Weight |
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Single Random — 16′ – 22′. 5% may be jointers. If Plain Ends — 5% may be 12′ – 16′. |
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Double Random — Shortest Length 22′, minimum average for order 35′. |
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Extra Strong and Double Extra Strong |
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Single Random — 12′ -22′. 5% may be 6′ – 12′. |
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Double Random (XS and lighter) — Shortest Length 22′, minimum average for order 35′. |
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Lengths longer than single random with wall thicknesses heavier than XS subject to negotiation. |
Required Markings on Each Length
(On Tags attached to each Bundle in case of Bundled Pipe)
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Rolled, Stamped, or Stenciled (Mfrs. Option) |
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Name brand of manufacturer |
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Kind of pipe, that is, Continuous Welded, Electric-Resistance-Welded A, Electric-Resistance-Welded B, Seamless A, Seamless B, XS for extra strong, XXS for double extra strong. |
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ASTM 53 |
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Length of pipe |
General Information
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Couplings — Applied handling tight. Couplings, 2″ and smaller straight tapped, other sizes taper tapped. |
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Thread Protection — Applied to pipe 4″ and larger. |
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End Finish (unless otherwise specified) — |
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STD or XS, or wall thicknesses less than 0.500 in. (excluding XXS): Plain and beveled |
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All XXS and wall thicknesses over 0.500 in.: Plain end square cut. |
