ASTM A106 Grade B Seamless Pipe

Short Description:

Name: ASTM A106 Seamless Carbon Steel Pipe

Standard: ASTM A106, ASME SA106 Grade: A, B, C

Processing types: ERW / Seamless / Fabricated / Welded

Outer diameter: NPS 1/2″, 1″, 2″ , 3″ , 4″, 6″, 8″, 10″, 12″ up to NPS 20 inch, 21.3 mm to 1219mm

Wall thickness: SCH 10, SCH 20, SCH STD, SCH 40, SCH 80, to SCH160, SCHXX; 1.24mm up to 1 inch, 25.4mm

Range of length: Single Random Length SGL, or Double Random Length. Fixed Length 6 meter or 12 meters.

Ends type: Plain end, Beveled, Threaded

Coating: Black paint, Varnished, Epoxy Coating, Polyethylene Coating, FBE, 3PE, CRA Clad and Lined.

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Overvier of ASTM A106/ASME SA106 Pipe

ASTM A106/ASME SA106 is the standard specification for seamless carbon steel pipe applied for high temperature services. It includes three grades A, B and C, and common use grade is A106 Grade B. It used in different industries not only for pipeline systems like oil and gas, water, mineral slurry transmission, but also for boiler, construction, structural purposes.

Chemical composition in %

● Carbon (C) Max For Grade A 0.25, For Grade B 0.30, Grade C 0.35
● Manganese (Mn): 0.27-0.93, 0.29-1.06
● Sulfur (S) Max: ≤ 0.035
● Phosphorus (P) : ≤ 0.035
● Silicon (Si) Min : ≥0.10
● Chrome (Cr): ≤ 0.40
● Copper (Cu): ≤ 0.40
● Molybdenum (Mo): ≤ 0.15
● Nickel (Ni): ≤ 0.40
● Vanadium (V): ≤ 0.08

Please note:
For each reduction of 0.01% for maximum carbon element, an increase of 0.06% manganese above the specified value shall be permitted, and up to maximum of 1.35%.
Elements Cr, Cu, Mo, Ni, V combined shall not exceed 1%.

ASTM A106 Grade B Tensile Strength and Yield Strength

Elongation formula:
In 2 in. [50mm], shall be calculated by: e = 625 000 A^0.2 / U^0.9
For inch-pound Units, e = 1940 A^0.2 / U^0.9
Explanations of e, A, and U, please find here. (Equation same with ASTM A53, API 5L pipe.)
Tensile Strength, min, psi [MPa] Grade A 48,000 [330], Grade B 60,000 [415], Grade C 70,000 [485]
Yield Strength minimum at psi [MPa] Grade A 30,000 [205], B 35,000 [240], C 40,000 [275]
Elongation in 2 in (50mm), minimum percentage %
For all small sizes tested in full section, basic minimum elongation transverse trip tests: Grade A Longitudinal 35, Transverse 25; B 30, 16.5; C 30, 16.5;
In case standard round 2 inch gage length test sample is used, above values are: Grade A 28, 20; B 22, 12; C 20, 12.

ASTM A106 Grade B Pipe Dimensions Schedule

The standard covers pipe sizes in NPS (National Standard Straight) from 1/8 inch to 48 inch (10.3mm DN6 – 1219mm DN1200), meanwhile complied the nominal wall thickness of the standard ASME B 36.10M. For other sizes out of the ASME B 36.10M is also allowed to use this standard specification.

Raw materials

The materials used for ASTM A106 standard specification shall be applicable for bending, flanging, or the similar forming processes. In case the steel material is to be welded, the welding process supposed to be suitable for this grade of ASTM A106, and applicable for the high temperature working environment.

Where there is a superior or a higher grade for the ASTM A106 steel pipe is required, the standard has a optional specification for the supplementary requirements, for the pipes that used this standard. More over, these supplementary specification asked for the additional test, when the order is to be placed.

Standards referred for making ASTM A106 pipes

References ASTM standards:
a. ASTM A530/ A530M This is the standard specification for the common requirements of the carbon, and alloy pipes.
b. E213 The standard for the Ultrasonic Examination test
c. E309 The standard for the Eddy Current examination test
d. E381 The standard for the plan of Macroetch test, for the steel products the steel bars, steel billets, blooms, and forging steels.
e. E570 The standard for the test plan for the flux leakage test of the ferromagnetic steel pipe and pipeline products.
f. Related ASME Standard:
g. ASME B 36.10M The nominal sizes standard specification for the welded and seamless steel pipe.
h. Related Military standard:
i. MIL-STD-129 The standard for the markings of shipment and storage.
j. MIL-STD-163 The standard for the storage and shipment for the steel forging products.
k. Related federal standard:
l. Fed. Std. No. 123 The standard for the civil agencies for the marking and shipments.
m. Fed. Std. No. 183 The standard specification for the continuous ID marking for steel products
n. Surface standard:
o. SSPC-SP 6 The standard specification for the surface.

Our Supply Range for Sale

Octalsupplied ASTM A106 Grade A, Grade B, Grade C seamless carbon steel pipes as below conditions:
● Standard: ASTM A106, Nace, Sour service.
● Grade: A, B, C
● Range of OD outer diameter: NPS 1/8 inch to NPS 20 inch, 10.13mm to 1219mm
● Range of WT wall thickness: SCH 10, SCH 20, SCH STD, SCH 40, SCH 80, to SCH160, SCHXX; 1.24mm up to 1 inch, 25.4mm
● Range of length: 20ft to 40ft, 5.8m to 13m, single random lengths of 16 to 22ft, 4.8 to 6.7m, double random length with average 35ft 10.7m
● Ends procession: Plain end, beveled, threaded
● Coating: Black paint, varnished, epoxy coating, polyethylene coating, FBE and 3PE, CRA Clad and Lined.