ステロイド 市販

ステロイド 市販
 
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    Spring Steels

    Edge Radius

    Flats can be supplied with an edge radius “R” which is equal to either “T’ or “T/2″, where “T” is equal to thickness.

    General Length

    We cater to orders in standard and specific length:

     

      1. a)Standard length 4 to 6 mtrs with 10% shorts down to 1 mtr.

     

      1. b) Customer’s specific lengths with tolerance + 50/-Omm.

    Straightness

    Bars hot rolled 3 mm/mtr (max) & hot rolled & machine straightened 1 mm/mtr (max)

    Quality

    Surface Condition: On visual inspection, surface is free from harmful defects, eg. Crack, lap, fold, scratch, roll/pass marks, pits etc.

    SIZES AND CONDITIONS OF SUPPLY

    Condition of SupplyShapesSizes
    Hot RolledFlat(W*T)50*5 mm-125*34 mm
    Hot RolledRound5.5 to 250 mm
    DrawnRound5-50 mm
    Peeled and GroundRound5-100 mm

    Decarburization

    DecarburizationFullPartialTotal
    Flats (upto 80*13)Nil0.150.15 mm (max)
    Flats (above 80*13)0.030.250.25 mm (max)
    Hot Rolled Round0.8%0.8% of the size (max)

    Grain Size

    5.8 (As per ASTME-112)

    As Rolled Hardness

    310 BHN (max)

    Inclusion Rating

    As per IS-4163/ASTME-45  :THIN: 2.5 A, B, C, D max

                                                          HEAVY : 1.5 A, B, C, D Max

     

                     As per JIS G-0555 :  % dA – 0.15 max

                                                           % dB + dC – 0.10 max

                                                           % d Tot – 0.20 max

    Delivery Conditions

    All bundles tied with wire/strapping at 3/4 places. 

    Approx. bundle weight : 2 MT. max

    Grade/HT. No. identification : By painted colour code and Heat Number written on each bundle / bar

    Standard shapes and sizes of Spring Steel Flat Bars

    1. RE Type

    The conventional type is of Round Edge (RE) type, having edge radius approximately equivalent to thickness but not specified.

    2. FL Type

    Feather leaf type Spring Steel flats have edge radius of half of thickness and also have many advantages over RE type in terms of economical and technical aspects. Size – wise edge radius is be mutually agreed.

    DIMENSIONAL TOLERANCES

    Flats:

    ROUNDS (HOT ROLLED)

    ROUNDS (BRIGHT BARS)

    FATIGUE GUARANTEED SPRING STEELS

    Sunflag Steel, a pioneer in making Spring Steel, has come up with products in this category, which ensure the required fatique life to springs used in vehicles, in the most demanding situations.

    THE SALIENT FEATURES OF THESE PRODUCTS ARE :

    1. Use of virgin inputs in steel making such as DRI, Pig Iron which are free from undesirable tramp elements.

    2. Carefully planned, steel making refining vacuum degassing and casting processes. .

    3. Well controlled reheating and rolling process.

    4. Closely monitored cooling parameters of rolled products.

    5. Thorough inspection and testing.

    6. Proper packing, stacking and storage for despatch.

    7. Wide size range.

    CHEMICAL COMPOSITION OF TYPICAL SPRING STEEL OF VARIOUS INTERNATIONAL STANDARDS