How to choose high quality A106GR.B seamless pipes?

How to choose high quality A106GR.B seamless pipes?

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How to choose high quality A106GR.B seamless pipes?


ASTM A106/A106M covers seamless carbon steel pipe for high-temperature service  in NPS 1 ⁄ 8 - 48 (DN 6 -1200) inclusive, with nominal (average) wall thickness as given in ASME B 36.10M.


Chemical Component (MAX, %) of A106GR.B seamless pipes

Grade

C

Mn

P

S

Si

Cr

Cu

Mo

Ni

V

A106Gr.B

0.30

0.29-1.06

0.035

0.035

0.1

0.4

0.4

0.15

0.40

0.08

Unless otherwise specified by the purchaser, for each reducion of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.65%.

Cr,Cu,Mo,Ni,V five elements combined shall not exceed 1%.


Mechanical Properties of A106GR.B seamless pipes

Grade


Tensile Strength

psi[MPa]

Yield Strength

psi[MPa]

Elongation

Full size strip

Specimen

A106Gr.B

Longitudinal

60000

[415]

35000

[240]

30

22

Transverse

16.4

12


Tolerance(variation) of Outside Diameter of A106GR.B seamless pipes

NPS(DN)

Tolerance

in. (mm)

in. (mm)

1/8<OD≤1/6 (6<OD≤40)

+/- 1/64 (+/-0.4)

1 1/2<OD≤4 (40<OD≤100)

+/- 1/32 (+/-0.8)

4<OD≤8 (100<OD≤200)

-1/16 - +1/32 (-1.6 - +0.8)

8<OD≤18 (200<OD≤450)

-3/32 - +1/32 (-2.4 - +0.8)

18<OD≤26 (450<OD≤650)

-1/8 - +1/32 (-3.2 - +0.8)

26<OD≤34 (650<OD≤850)

-5/32 - +1/32 (-4.0 - +0.8)

34<OD≤48 (850<OD≤1200)

-3/16 - +1/32 (-4.8 - +0.8)

 

Finished End of A106GR.B seamless pipes

If there is no specificed demands for pipe end from buyer, the Pipe shall be made end as below:

Outer Diameter

Wall Thickness

Pipe End

≤NPS 1-1/2[DN 40]

All

plain-end square cut, or plain-end beveled

≥NPS 2 [DN 50]

walls through extra strong weights

plain-end-beveled

≥NPS 2 [DN 50]

Walls over extra strong weights

plain-end square cut

 


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