Carbon Steel Pipes (A106 Gr B Pipes) is one of the most common products that are used in the development of gas or oil refineries, petrochemical plants, ships, boilers and power plants. They are used at the place where water or oil is stored and search for a narrow space to be flown smoothly.
Generally, they are the big need of industries all around the world. They are also used where the piping should transport gases and fluid that absorb higher pressure and temperature levels. They are divided into two grades, first is A, the last one is B, but surprisingly their uses and specifications are almost same.
The total thickness of these carbon steel pipes is from ¼ to 30” and they are also differentiated in schedules,shapes, and designs even dimensions too. The wall thickness of them is out of XXH such as 4 to 24 OD, 3 walls to 18 OD and 2 walls to 8 OD.
Carbon Steel Pipes (A106 Gr B Pipes) are made by killing steel along with the first melting process being an electric furnace, basic oxygen, and open hearth and mixed with a single refining. They are given hot treatment using cold drawn pipe and steel cast in ingots is permissible.
ASTM A106 Gr-B Carbon Seamless Steel Pipe Specification
SPECIFICATIONS : ASTM A106 ASME SA106
DIMENSIONS : ASTM, ASME and API
SIZE : 1/2” NB to 36” NB
THICKNESS : 3-12mm
SCHEDULES : SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
TYPE : Seamless / ERW / Welded
FORM : Round, Hydraulic Etc
LENGTH : Min 3 Meters, Max18 Meters, or according to customer’s requirement
END : Plain End, Beveled End, Treaded
ASTM A106 Gr-B Carbon Seamless Steel Pipe Chemical Composition
| ASTM A106 – ASME SA106 seamless carbon steel pipe – chemical composition, % | ||||||||||
| Element | C max |
Mn | P max |
S max |
Si min |
Cr max (3) |
Cu max (3) |
Mo max (3) |
Ni max (3) |
V max (3) |
| ASTM A106 Grade A | 0.25 (1) | 0.27-0.93 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
| ASTM A106 Grade B | 0.30 (2) | 0.29-1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
| ASTM A106 Grade C | 0.35 (2) | 0.29-1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
ASTM A106 Gr-B Carbon Seamless Steel Pipe Mechanical & Physical Properties
| ASTM A106 pipe | A106 Grade A | A106 Grade B | A106 Grade C |
| Tensile Strength, min., psi | 48,000 | 60,000 | 70,000 |
| Yield Strength, min., psi | 30,000 | 35,000 | 40,000 |
ASTM A106 Gr-B Carbon Seamless Steel Pipe Dimension Tolerances
| Pipe Type | Pipe Sizes | Tolerances | |
| Cold Drawn | OD | ≤48.3mm | ±0.40mm |
| ≥60.3mm | ±1%mm | ||
| WT | ±12.5% | ||
