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Alloy Steel Boiler, Superheater Heat Exchanger Tubes Seamless ASME SA213

Categories Boiler Steel Tubes
Brand Name: HENGLONG
Certification: ISO9001, ISO18001, ISO14001, PED97/23/EC
Place of Origin: China
Supply Ability: 6000 metric tons per year
Delivery Time: 20-30 days
Packaging Details: Wooden cases
Payment Terms: L/C, T/T
Material: alloy steel
type: seamless steel tube
process: cold drawn
tube shape: round
application: boiler, superheater, heat exchanger
Price: Negoniation
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    Alloy Steel Boiler, Superheater Heat Exchanger Tubes Seamless ASME SA213

    ASME SA213 Seamless alloy steel boiler, superheater, and heat exchanger tubes


    Standard: ASTM A213 / ASME SA213

    Steel grade: ferritic alloy steels

    Material shall conform to the applicable requirements of specification A450/A450M

    T5T11T22T23T91
    Carbon, max, %0.150.05-0.150.05-0.150.04-0.100.08-0.12
    Manganese, %0.30-0.600.30-0.600.30-0.600.1-0.60.30-0.60
    Phosphorous, max. %0.0250.0250.0250.030.02
    Sulfur, max, %0.0250.0250.0250.010.01
    Silicon, max, %0.500.50-1.000.500.500.2-0.5
    Chromium, max, %4.0-6.01.00-1.501.90-2.601.9-2.68.0-9.5
    Molybdenum, %0.45-0.650.44-0.650.87-1.130.05-0.300.85-1.05
    Vanadium, min, %----0.18-0.25

    Process: cold drawn

    The tubes cover minimum wall thickness.

    Application: tubular heat exchangers, superheaters, boilers.


    Dimensional range:

    OD: 12.7-76.2mm

    Length: up to 24m

    Any specific size is to be discussed before offer


    The tube be 100% eddy current tested

    Ultrasonic test is as option

    Straightness ≤1mm/1000mm

    Roughness: Ra ≤0.8


    Heat treatment

    All tubes of grades, except T23, T91 shall be reheated and furnished in the full-annealed, normalized and tempered condition.


    Mechanical properties

    T5T11T22T23T91

    Tensile strength

    min, ksi (MPa)

    60 (415)60 (415)60 (415)74 (510)85 (585)

    Yield strength

    min, ksi (MPa)

    30 (205)30 (205)30 (205)58 (400)60 (415)

    Elongation in 50mm

    min, %

    3030302020

    Hardness

    T9 shall have a hardness not exceeding 179HB or 89HRB

    Grade T91, T92 shall have a hardness not exceeding 250HB or 25HRC

    Grade T23 shall have a hardness not exceeding 220HB or 97HRB

    Grade T5, T9, T11, T22 shall have a hardness not exceeding 163HB or 85HRB.


    Test

    • One tension test shall be made on a specimen for lots of not more than 50 tubes. Tension tests shall be made on specimens from two tubes for lots of more than 50 tubes
    • One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.
    • One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.
    • Each tube shall be subjected to the hydrostatic test, or, instead of this test, a nondestructive electric test may be used when specified by the client.

    Surface quality

    • Cold drawn steel tubes shall be free of scale and suitable for inspection. A slight amount of oxidation is not considered scale.
    • Any special finish requirement shall be subject to agreement between the supplier and the purchaser.

    Tubes shall be delivered with square cut ends. The ends are free of excessive burrs.

    The tubes are bundled in the waterproof plastic sheet and packed in the wooden cases

    The case is most suitable for hanging by forklift.

    EN10204-3.1 MTC shall be issued

    EN10204-3.2 MTC is as option





    Product Tags:

    boiler water tube

      

    steam boiler tubes

      
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