| Customization: | Available |
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| Application: | Chemical Industry, Oil and Gas Industry, Building Material |
| Certification: | CE, ISO9001 |
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Product Name |
ASTM A270/A270M Seamless Stainless Steel Tubes For Boiler |
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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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Process |
Cold drawn, Cold 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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Certificate |
ISO9001/2000 |
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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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Standard: ASTM A270/A270M
Grade: TP304, TP304L, TP316, TP316L, S31254, N08926, N08367, S31803, S32205, S32750, S32003
Process: Seamless, Welded, Heavily Cold Worked Welded
Outside Diameter: 12.7 - 304.8mm
Wall Thickness: 1.5-3.4mm
Length:1000mm to 12000m
Manufacture
1. The tubes shall be manufactured by one of the following processes:
1.1 Seamless (SML) tubes shall be made by a process that does not involve welding at any stage.
1.2 Welded (WLD) tubes shall be made using an automated welding process with no addition of filler metal during the welding process.
1.3 Heavily cold worked (HCW) tubes shall be made by applying cold working of not less than 35 % reduction of the thickness of both walls and weld to a welded tube prior to the final anneal. No filler shall be used in making the weld. Prior to cold working, the weld shall be 100 % radiographically inspected in accordance with the requirements of ASME Boiler and Pressure Vessel Code Section VIII, Division 1, latest revision, Paragraph UW 51.
2. At the manufacturer's option, the tubing may be furnished either hot finished or cold finished.
Heat Treatment
1.1 All material shall be furnished in heat-treated condition. The heat treatment procedure, except for S31803, S32003, S32205, S32750, N08926 and N08367, shall consist of heating the material to a minimum temperature of 1900 °F [1040 °C] and quenching in water or rapid cooling by other means.
2.2 N08926 shall be heat-treated to a minimum temperature of 2010 °F [1100 °C] followed by quenching in water or rapidly cooling by other means. UNS N08367 should be solution annealed from 2025 °F [1110 °C] minimum followed by rapid quenching.
3.3 S31803 and S32205 shall be heat-treated in a temperature range of 1870 °F [1020 °C] to 2010 °F [1100 °C] followed by quenching in water or rapidly cooling by other means.
4.4 S32750 shall be heat-treated in a temperature range of 1880 °F [1025 °C] to 2060 °F [1125 °C] followed by quenching in water or rapidly cooling by other means.
4.5 S32003 shall be heat-treated in a temperature range of 1850 °F [1010 °C] to 2010 °F [1100 °C].
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