ASME SA178 GR. A, 50.8MM * 3.048MM * 18300MM Electric-Resistance-Welded Carbon Steel Tube
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ASTM A178 Standard covers minimum-wall-thickness, electric-resistance-welded tubes made of carbon steel and carbon-manganese steel intended for use as boiler tubes, boiler flues, superheater flues, and e ends.
SA178 tubing sizes and thicknesses usually furnished to this specification are 1⁄2 to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.360 in. [0.9 to 9.1 mm], inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification.
Applications:
ASTM A178 tubes are a kind of frequently-used tubes in our life, they are mainly used in manufacturing heating pipelines, containers, coal-saving devices, superheaters, arch superheated tube, airway tube etc.
Specification:
| Standard specification | ASTM A178, ASME SA178 |
| Grade | Grade A, Grade C, Grade D, BKW, NBK, GBK |
| Available sizes | 4 Inch to 26 Inch, Customized Size Available |
| OD | 12.7mm to 127mm |
| Wall thickness | 1.5mm to 6.0mm |
| Length | 6m-25m, Custom Double / Single Random |
| End Finish | Plain End, Beveled End, Treaded Protected With Plastic End Caps |
| Shape | Round, Coiled, “U” Bend, Rectangular, Hydraulic |
| Manufacturing types | Welded & ERW SA178 & A178 Tubes |
| Fabricated & CDW A178 & SA178 Tubes |
| Common uses & application | - Boilers
- Heat Exchangers
- Power Plants, i.e Gas, Oil, Coal, Thermal, and Nuclear
- Condensers
- Marine Shipping
- Refineries
- Paper Pulp
- Petrochemical
- Pressure Vessels
- General Engineering
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| Producing process | Electric-Resistance-Welded |
| Delivery Condition | Annealed, Normalized, Tempered, Heat Treatment, BK, BKS |
| Surface | Varnish |
| Common Supply Terms followed | - Hydrostatic or Nondestructive Electric Test Heat Treatment: according to Standard
- Surface Condition: According to Standard.
- Grain Size: According to standard
- Sampling: flattening, flaring, grain size, Marking
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SA178 Chemical details:
| Element | Carbon | Manganese | Phosphorus | Sulfur |
| Grade A | 0.06-0.18 | 0.27-0.63 | 0.035 | 0.04 |
| Grade B | 0.35 max | 0.80 max | 0.035 | 0.035 |
| Grade C | 0.27 max | 1.00-1.50 | 0.03 | 0.035 |
SA178 Mechanical properties:
| | SA178 Grade A | SA178 Grade C | SA178 Grade D |
| Tensile strength, min, ksi [MPa] | 47[325] | 60[415] | 70[485] |
| Yield strength, min, ksi [MPa] | 26[180] | 37[255] | 40[275] |
| Elongation in 2 in. or 50mm, min, % | 35 | 30 | 30 |
| For longitudinal strip tests a deduction for | 1.50A | 1.50A | 1.50A |
SA178 Pipe OD and WT Tolerance:
| Outside Diameter tolerance | Wall thickness tolerance |
| OD < 50 | ±0.05mm | S < 4mm | ±12.5% |
| OD > 50 | ±1% | 4–20mm | -120 |
| | | S≥20mm | ±12.5% |
Product Tags:
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GRA Electric Resistance Welded ASME SA178 Carbon Steel Tube Images
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