ASME SA106 GRC Seamless carbon steel boiler pipe for high temperature service
ASTM A106 / ASME SA106 seamless carbon steel pipe for high temperature service is supplied by Vanforge.
Ordering Information
The inclusion of the following, as required will describe the desired material adequately, when ordered under this specification:
1 Quantity (feet or number of lengths),
2 Name of material (seamless carbon steel pipe),
3 Grade,
4 Manufacture (hot-finished or cold-drawn),
5 Size (NPS and weight class or schedule number, or both; outside diameter and nominal wall thickness; or inside diameter and nominal wall thickness),
6 Special outside diameter tolerance pipe,
7 Inside diameter tolerance pipe, over 10 in. (254 mm),
8 Length (specific or random, Section 20),
9 Optional requirements (Section 9 and S1 to S7),
10 Test report required (Section on Certification of Specification A 530/A 530M),
11 Specification designation,
12 End use of material,
13 Hydrostatic test in accordance with Specification A 530/A 530M or 13.3 of this specification, or NDE in accordance with Section 14 of this specification.
14 Special requirements.
Process
1 The steel shall be killed steel, with the primary melting process being open-hearth, basic-oxygen, or electric-furnace, possibly combined with separate degassing or refining. If secondary melting, using electroslag remelting or vacuum-arc remelting is subsequently employed, the heat shall be defined as all of the ingots remelted from a single primary heat.
2 Steel cast in ingots or strand cast is permissible. When steels of different grades are sequentially strand cast, identification of the resultant transition material is required. The producer shall remove the transition material by any established procedure that positively separates the grades.
3 For pipe NPS 1 1/2 and under, it shall be permissible to furnish hot finished or cold drawn.
4 Unless otherwise specified, pipe NPS 2 and over shall be furnished hot finished. When agreed upon between the manufacturer and the purchaser, it is permissible to furnish cold drawn pipe.
Heat Treatment
Hot-finished pipe need not be heat treated. Cold-drawn pipe shall be heat treated after the final cold draw pass at a temperature of 1200°F (650°C) or higher.
Chemical composition, %, max.
| | Grade B | Grade C |
| C | 0.30 | 0.35 |
| Mn | 0.29-1.06 | 0.29-1.06 |
| P | 0.035 | 0.035 |
| S | 0.035 | 0.035 |
| Si | 0.10 | 0.10 |
| Cr | 0.40 | 0.40 |
| Cu | 0.40 | 0.40 |
| Mo | 0.15 | 0.15 |
| Ni | 0.40 | 0.40 |
| V | 0.08 | 0.08 |
Mechanical properties
| | Grade B | Grade C |
| Tensile strength, min, psi (MPa) | 60000 (415) | 70000 (485) |
| Yield strength, min, psi (MPa) | 35000 (240) | 40000 (275) |
Quality assurance
Bending test
Flattening test
Hydrostatic test
Nondestructive electric test
End Finish
The Pipe shall be furnished to the following practice, unless otherwise specified.
1 NPS 11⁄2 and Smaller—All walls shall be either plain-end square cut, or plain-end beveled at the option of the manufacturer.
2 NPS 2 and Larger—Walls through extra strong weights, shall be plain end-beveled.
3 NPS 2 and Larger—Walls over extra strong weights, shall be plain-end square cut.
NOTE—Plain-end beveled is defined as plain-end pipe having a bevel angle of 30°, +5° or -0°, as measured from a line drawn perpendicular to the axis of the pipe with a root face of 1/16 ± 1/32 in. (1.5875 ± 0.7938 mm). Other bevel angles may be specified by agreement between the purchaser and the manufacturer.
ASTM A106 Gr B Seamless Pipe Specifications
Standard : ASTM A106 / ASME SA106 Grade B
Outside Diameter: 325-1067 mm
Wall Thickness: 9.53-140 mm
Length: On the request
Forms : Round Pipes and Tubes
End : Plain End, Beveled End, Treaded
Production procedure
