Our Products

CS SEAMLESS SQUARE PIPE ASTM A 106 GR. B / CARBON STEEL SEAMLESS SQUARE PIPE ASTM A 106 GR. B


A106 Pipe is the black carbon steel pipe, A106 Gr B Sch 40, A106 Gr B Erw Pipe and ASTM A106 Seamless Pipe for high-temperature and high-pressure service. ASTM/ASME A-106/SA-106 grade seamless pipes are one of our most widely used grade of carbon steel and are readily available ex-stock for all standard thicknesses up to SCH160. These A106 Seamless Pipes, SA106 Pipe, ASTM A106 Grade B Line pipe are available in three grades A, B, and C of varying strength. NPS 1-1/2 and under may be either A106 grade b hot finished or A106 grade b cold drawn. NPS 2 and larger shall be A106 grade b hot finished unless otherwise specified. Surface finish standards are outlined in the specification. SA106 Material, ASTM A106 Grades A and ASTM A106 B are obtainable in most sizes and schedule numbers, SA106 Grade B permits higher carbon and manganese contents than Grade A. The A106 Grade B Pipe, ASTM A106 Grade B Schedule 40 Pipe and A106 Black Pipe supplied by ASTM Seamless Pipes has a maximum carbon content of 0.23%.


SPECIFICATIONS

Its known for superior grade of pipe.

ASTM A106 grade b pipe Sizes (Seamless): 1/2" NB - 60" NB
Sizes (ERW): 1/2" NB - 24" NB
Sizes (SAW): 16" NB - 100" NB

A106 Pipe Specification

A106 NPS 1/8 -- 48 ANSI

A106 grade b pipe wall thickness available

(SCH5, SCH5S, SCH10, SCH10S, SCH20, SCH30, STD, SCH40, SCH40S, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS)
Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.

ASME SA 106 Gr B Scope

Covers SEAMLESS carbon steel nominal wall pipe for high-temperature service, suitable for bending, flanging and similar forming operations.

NPS 1 1/2 and under may be either hot finished or cold drawn. NPS 2 and larger shall be hot finished unless otherwise specified.

Kinds of Steel Permitted For
For Pipe Material

Killed Steel
Open-hearth
Electric-furnace
Basic-oxygen

ASTM A106 Grade C Pipe Hot-Dipped
Galvanizing

Not covered in specification.

Permissible Variations
in Wall Thickness

The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.

Tensile
Requirements

A106 Gr.B Seamless Pipe

Grade A

Grade B

Grade C

Tensile Strength, min psi

48,000

60,000

70,000

Yield Strength, min., psi

30,000

35,000

40,000

Hydrostatic Testing

Inspection test pressures produce a stress in the pipe wall equal to 60% or specified minimum yield strength (SMYS) at room temperature. Maximum Pressures are not to exceed 2500 psi for NPS 3 and under and 2800 psi

for the larger sizes. Pressure is maintained for not less than 5 seconds.

Permissible Variations in Weights per Foot

Weight of any length shall not vary more than 10% over and 3.5% under that specified.
NOTE -- NPS 4 and smaller -- weighed in lots. Larger sizes -- by length

Lengths

Lengths required shall be specified on order. No "jointers" permitted unless otherwise specified.
If no definite lengths required, following practice applies:
Single Random -- 16' - 22'. 5% may be 12' - 16'
Double Random -- Minimum length 22', Minimum average 35'. 5% may be 16' - 22'.

Required Markings on Each Length

(On Tags attached to each Bundie in case of Bundled Pipe)
Rolled Stamped or Stenciled (Mfgrs. option)

Manufacturer's name or brand.

Length of pipe.

A106 A, A106 B, A106 C.

ANSI schedule number.

Hydrostatic test pressure and/or NDE.

Weight per foot (NPS 4 and larger)

or NH if neither is specified.

Additional "S" if tested supplementary requirements.

General Information

Unless otherwise specified, pipe furnished with plain ends.
Purchaser may specify NDE
Surface finish standards are outlined in specification.
in lieu of hydrostatic test or neither

ASTM a106 grade b Chemical Requirements

Grade A

Grade B

Grade C

Carbon max. %

0.25

0.30

0.35

Manganese %

0.27 to 0.93

0.29 to 1.06

0.29 to 1.06

Phosporous, max. %

0.025

0.025

0.025

Sulfur, max. %

0.025

0.025

0.025

Silicon, min. %

0.10

0.10

0.10

Number of Tests Required for ASTM A106 grade b pipe

NPS

On One Length From Each Lot of

Tensile

5 and smaller
6 and larger 200 or less

400 or less
6 and larger 200 or less

Bonding

2 and smaller

400 or less

Flattening

2 through 5
6 and over

400 or less
200 or less

A106 grade b seamless pipe Mechanical Tests Specified

Tensile Test -- NPS 8 and larger -- either transverse or longitudinal acceptable
Smaller than NPS 8 -- weighed in lots. Larger sizes -- by length.
Flattening Test -- NPS 2 and larger.
Bending Test(Cold) -- NPS 2 and under.

 

Degree of Bend

Diameter of Mandrel

For Normal A106 uses

90

12 x nom. dia. of pipe

For Close Coiling

180

8 x nom. dia. of pipe

ASTM A106 grade b material Permissible Variations in Outside Diameter

Outside Diameter at any point shall not vary from standard specified more than--

NPS

Over

Under

1 1/2 and smaller

1/64"

1/32"

2 – 4

1/32"

1/32"

5 – 8

1/16"

1/32"

10 – 18

3/32"

1/32"

20 – 26

1/8"

1/32"

 

ASTM A106 GRADE B PIPE SPECIFICATION

Standards

ASTM, ASME and API, ANSI B 36.10

Grades

ASTM A106 Grade A, ASTM A106 Grade B, ASTM A106 Grade C

Size

1/2” NB to 36” NB

Thickness

3-12mm

Schedules

SCH 20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH & heavier

Origin

European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)

Tolerance

Cold drawn pipe: +/-0.1mm

Cold rolled pipe: +/-0.05mm

Craft

Cold rolled and Cold drawn

Type

Seamless / ERW / Welded / Fabricated

Form

Round, Hydraulic Etc

Length

Min 3 Meters, Max18 Meters, or according to customer’s requirement

End

Plain End, Beveled End, Treaded

Specialized in

Large Diameter ASTM A106 Grade B Pipe

Additional Testing

Mill Test Certificates, EN 10204 3.1, Chemical /Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports, India Boiler Regulations (IBR) Test Certificate, NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR

ASME Standard

B36.10M Welded and Seamless Wrought Steel Pipe

ANSI Standard

B1.20.1 Pipe Threads, General Purpose