ASTM A106 Gr B Anchor FlangeASTM A105 · Project drawing · Manufacturer, stockist & exporter, India
SA-106 Gr B · Seamless carbon steel pipe · ANC
An ASTM A106 Gr B anchor flange is a forged ring welded into a pipeline to fix it to a structure, for use with ASTM A106 Gr B pipe. ASTM A106 Gr B itself is a pipe or plate specification, so the matching anchor flange is made to ASTM A105 — which is what we supply for A106 B lines. Anchor flanges restrain pipelines against thrust and movement — at pump stations, river crossings and pig traps. They are made to project drawings.
- ASTM A105
- Project drawing
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an ASTM A106 Gr B Anchor Flange?
- What it is
- A forged ring welded into a pipeline to fix it to a structure
- Material
- ASTM A105
- Dimensions
- Project drawing
- Grade
- ASTM A106 Gr B
- Best at
- High-temperature process and steam piping in refineries and power plants
ASTM A106 Gr B Anchor Flange Specification
| Product | ASTM A106 Gr B Anchor Flange |
|---|---|
| Material standard | ASTM A105 |
| Dimensional standard | Project drawing |
| Sizes | ½" – 24" (ASME B16.5) · 26" – 60" (ASME B16.47) |
| Pressure class | Class 150, 300, 400, 600, 900, 1500, 2500 · PN 6 – PN 100 |
| Facing | RF · FF · RTJ · tongue & groove |
| Bore | To match pipe schedule (state on order) |
| Testing | Chemical & mechanical per heat · NDT · impact where specified |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose an Anchor Flange
Anchor flanges restrain pipelines against thrust and movement — at pump stations, river crossings and pig traps. They are made to project drawings.
- Made to drawing
- Usually weld neck on both sides
- Often large and heavy forgings
More on choosing: Anchor flange guide.
ASTM A106 Gr B Anchor Flange: Why A106 B for anchor flanges
Anchor flanges restrain pipelines against thrust and movement — at pump stations, river crossings and pig traps. They are made to project drawings. In ASTM A106 Gr B, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Carbon and low-alloy flanges carry most utility, hydrocarbon and high-temperature service. ASTM A106 Gr B is picked for high-temperature process and steam piping in refineries and power plants. |
|---|---|
| Typical service | Refineries — Process and steam lines. |
| B16.5 material group | 1.1 |
| Bolting | ASTM A193 B7 studs with A194 2H nuts |
| Welding to carbon steel | Matching carbon or low-alloy filler is used; joints to stainless need ER309L |
| Matching filler | ER70S-6 / E7018 |
ASTM A106 Gr B Anchor Flange Chemical Composition
| Element | Weight % |
|---|---|
| Carbon | 0.30 max |
| Manganese | 0.29 – 1.06 |
| Silicon | 0.10 min |
| Phosphorus | 0.035 max |
| Sulphur | 0.035 max |
| Chromium | 0.40 max |
| Copper | 0.40 max |
| Nickel | 0.40 max |
ASTM A106 Gr B Anchor Flange Mechanical Properties
| Minimum values (elongation varies with wall) | Value |
|---|---|
| Tensile strength | 415 MPa · 60 ksi |
| Yield strength 0.2% | 240 MPa · 35 ksi |
| Elongation | 30% |
Full chemistry, properties and equivalents are on the ASTM A106 Gr B grade page.
Other ASTM A106 Gr B flanges
ASTM A106 Gr B Anchor Flanges for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiASTM A106 Gr B Anchor Flange — questions buyers ask
What information is needed to quote an anchor flange?
The project drawing with pipe size, wall, design loads and material, plus the inspection plan.
What pressure rating does a ASTM A106 Gr B anchor flange have?
It depends on class and temperature. ASTM A106 Gr B forgings are in ASME B16.5 material group 1.1; read your class column in that group's table at the design temperature.
Can ASTM A106 Gr B anchor flanges be welded to carbon steel?
Yes — matching carbon or low-alloy filler is used; joints to stainless need ER309L.
Which standard covers ASTM A106 Gr B anchor flanges?
The material is ASTM A105; dimensions follow Project drawing. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a ASTM A106 Gr B anchor flange?
The steel price, the size and pressure class, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026