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Carbon Steel IBR Pipes & Tubes.
The steel shall be killed steel, with the primary melting
process being open-hearth, basic-oxygen, or electric-furnace,
possibly combined with separate degassing or refining. If
secondary melting, using electroslag remelting or vacuum-arc
remelting is subsequently employed, the heat shall be defined as all of the ingots remelted from a single primary heat.Approved under the India Boiler Regulation Act along with the form 3A/3D.
ASTM A 106 Gr. B , IBR
LT Seamless Pipe , ASTM A 333 Gr.6
Carbon Steel Seamless Boiler Tube IBR BS 3059
Part II / CDS / 360, BS / 3059/ Part II / HFS / 360
ASTM A 210 Din 17175 St 35.8
Heat Exchanger Tube ASTM A 179
API Line Pipes API 5L Gr. B / PSL Gr x 52
ERW Boiler Tubes IBR BS 3059 / Part I – 320
Size Range : 6 mm NB To 24' NB
Thickness : SCH 40, SCH 80, SCH 160, SCH XXS
length : 6 mtr & Double random Length
4.2 Steel cast in ingots or strand cast is permissible. When
steels of different grades are sequentially strand cast, identification of the resultant transition material is required. The producer shall remove the transition material by any established procedure that positively separates the grades.
4.3 For pipe NPS 11⁄2 and under, it shall be permissible to
furnish hot finished or cold drawn. 4.4 Unless otherwise specified, pipe NPS 2 and over shall be furnished hot finished. When agreed upon between the manufacturer
and the purchaser, it is permissible to furnish colddrawn
pipe.
Hot-finished pipe need not be heat treated. Cold-drawn
pipe shall be heat treated after the final cold draw pass at a
temperature of 1200°F (650°C) or higher.
Weight—The weight of any length of pipe shall not
vary more than 10 % over and 3.5 % under that specified.
Unless otherwise agreed upon between the manufacturer and the purchaser, pipe in NPS 4 and smaller may be weighed in convenient lots; pipe larger than NPS 4 shall be weighed separately.
Diameter—The tolerances for diameter shall be in
accordance with the following:
Except for pipe ordered as special outside diameter
tolerance pipe or as inside diameter tolerance pipe, variations
in outside diameter shall not exceed those prescribed in Table 5.
For pipe over 10 in. (254 mm) OD ordered as special
outside diameter tolerance pipe, the outside diameter shall not vary more than 1 % over or 1 % under the specified outside diameter.
For pipe over 10 in. (254 mm) ID ordered as inside
diameter tolerance pipe, the inside diameter shall not vary
more than 1 % over or 1 % under the specified inside diameter.
Thickness—The minimum wall thickness at any point
shall not be more than 12.5 % under the nominal wall thickness specified.
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