| Customization: | Available |
|---|---|
| Application: | Cast Iron, Chemical Processing, Construction, Oil and Gas, Water Supply, Building Material |
| Pipe Diameter: | 1/8"-5" |
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Product Name |
ASTM A498/A498M Welded Carbon Steel Tubes Heat Exchanger Pipe |
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Size
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OD |
3.18-810mm |
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Thickness |
0.2-40mm |
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Max Length |
50m |
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Surface |
Pickled, Bright Annealed, Polished,Black | |
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Process |
Cold drawn, Hot rolled |
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Usage |
Gas Industry, Oilfield, Thermal power, Oil industry, Shipbuilding, Petrochemical, Tanker, Nuclear , etc |
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Surface |
Pickling and annealing,pickling and annealing+polishing+ EP(Electricity polish) |
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End |
Plain, Beveled with caps |
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Package |
Reinforced plywood case bysted angle bar, Playwood cased Plastic bags packing, Condenser, heat exchanger tube packing, U-tube packed with wooden cases. |
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Inspection |
With Hydraulic Testing, Ultrasonic testing or X-ray Test |
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TPI |
TUV, SGS, BV, Lloyd's, etc. |
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Payment: |
L/C at sight, L/C 180 days, T/T, D/P, OA, Western Union, |
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Port of Shipment |
Shanghai port in China |
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ASTM A498/A498MScope
1. This specification covers external helical, integral finned, seamless or welded low-carbon steel tubes for use in tubular heat exchangers, surface condensers, evaporators, superheaters, and similar heat-transfer apparatus in unfinned end diameters up to 2 in. [50 mm], inclusive.
2. Units-This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently ofthe other. Combining values from the two systems may result in non-conformance with the standard.
1. The tube after finning shall be supplied in either the annealed or as-fabricated condition, one of which shall be specified on the purchaser order.
2. The annealed condition is defined as having both the finned and unfinned portions of the tube conforming to the applicable heat-treatment requirements of the governing ASTM specification for the steel tube analysis involved.
3. The as-fabricated condition is defined as having the finned portions of the tube in the as-finned or cold-worked condition produced by the finning operation and the unfinned or plain tube portions of the finned tube in the as-fabricated
condition suitable for rolling-in operations.
ASTM A498/A498M Tensile Requirements
The tube prior to the finning operation, or unfinned portions of the finned tube, shall conform to the requirements for tensile properties prescribed in the governing plain-tube specification.
ASTM A498/A498M Pressure Test
Each tube after finning shall be subjected to an internal air pressure of 250 psi [1.7 MPa] minimum for 5 s without showing evidence ofleakage. Any evidence ofleakage shall be cause for rejection. The test method used shall permit easy visual detection of any leakage, such as testing the tube under water or by the pressure differential method.
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