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ASTM A53 Grade B Seamless Pipe

Considered to be really popular in the oil and gas industry, the ASTM A53 Grade B Pipe has increased tensile strength as well as yield strength in comparison to grade A. Pipes produced according to specification ASTM A53 can be either finished by coating it with zinc or they can be devoid of any surface treatment. Usually, the surface of A53 Welded Pipe could be treated by hot dip galvanization or they could be coated with zinc. What makes zinc particularly useful is that it lends its amazing corrosion resistance properties to pipes made from various steel and iron grades. In the oil and gas industry, the outer layer of the pipe is exposed to various corrosive compounds. When a layer of zinc has been applied as a finish the A53 Gr B Erw Pipe resists getting corroded from outside, thus preventing the alloy from either getting deformed or decayed. The welded or seamless pipes produced according to the ASTM A53 specification are available in NPS 1/8 to NPS 26.

ASTM A53 Grade B Seamless Pipe

The steel used to manufacture the ASTM A53 Grade B Seamless Pipe has been categorized in either an open hearth, basic oxygen or an electric furnace processes. As a set procedure, the ASTM specification requires certain mechanical parameters to be followed such as bend, tension, as well as a flattening in addition to its chemical composition. Moreover, tests are performed on the ASTM A53 Grade B Schedule 40 in order to ensure that these pipes must match up to the mechanical properties of the standard. A hydrostatic test could be applied, without the presence of any leak through either the weld seam or the pipe body. In order to confirm that the pipe has been produced keeping in accordance with the standard, a Nondestructive electric test has to be conducted with the full volume of the ASTM A53 Grade B ERW Pipe.

Standard Specifications of ASTM A53 Grade B Seamless Pipe

Specifications ASTM A106 ASME SA106
Dimensions ASTM, ASME and API
Size 1/2” NB to 36” NB
Thickness 3-12mm
End Plain End, Beveled End, Treaded
Form Round, Hydraulic Etc
Schedules SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Type Seamless / ERW / Welded / Fabricated
Length Min 3 Meters, Max18 Meters, or according to customer’s requirement

Always Remember

ASTM A53 is Standard Specification for Pipe Available in Welded and Seamless Form. These A53 pipes comes in three types (F, E, S) and two grades (A, B). Its Tensile Strength is around 330 MPa

Chemical Structure of A53 Gr B Erw Pipe

A53 Gr.B
C Mn P S Cu Ni Cr Mo V
0.3 1.2 0.05 0.045 0.4 0.4 0.4 0.15 0.08

Mechanical Behaviour of SCH 40 SA 53 Gr.B ERW Pipe

Grade Yield Strength Tensile Strength
A53 Gr.B
240 415

Hot Forming And Heat Treatment of A 53 Gr B Pipe

Hot forming Heat treatment
Temperature °C Type of cooling Normalizing 1) Stress-relieving anneal 2) Type of cooling
1100 – 950 Air 890 – 950 °C 600 – 650 °C Air

Testing Requirements of FBE coated ASTM A53b Pipe

Test ASTM A53 Grade A ASTM A53  Grade B
Yield  30,000 psi 35,000 psi
Tensile 48,000 psi 60,000 psi
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