| Parameter | Specification |
|---|---|
| Product Name | A105 Extra Heavy Blind Flange |
| Material Grade | ASTM A105 (Carbon Steel) |
| Flange Type | Blind Flange |
| Size Range | 26" to 72" (custom sizes available on request) |
| Bore Type | Large Bore |
| Pressure Class | ANSI Class 150, 300, 600, 900, 1500, 2500 |
| Standard Compliance | ASME B16.5, ASME B16.47 (Series A & B), ASTM A105 |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Surface Finish | Stock Finish (125–250 AARH), or as per customer requirement |
| Dimensions Tolerance | As per ASME/ANSI standards |
| Testing & Inspection | Hydrostatic, PMI, UT, RT (as required) |
| Coating / Protection | Black paint, anti-rust oil, or as specified by customer |
| Applications | Oil & Gas, Petrochemical, Power Plants, Water Treatment, Marine, Industrial |
| Origin | Manufactured by Raj Bhoomi Engineers – India |
| Export Markets | Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, USA, Canada, Africa, etc. |
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.35 |
| Manganese (Mn) | 0.60 – 1.05 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Silicon (Si) | 0.10 – 0.35 |
| Copper (Cu) | ≤ 0.40 (if specified) |
| Nickel (Ni) | ≤ 0.40 (if specified) |
| Chromium (Cr) | ≤ 0.30 (if specified) |
| Molybdenum (Mo) | ≤ 0.12 (if specified) |
| Vanadium (V) | ≤ 0.08 (if specified) |
| Property | Value / Specification |
|---|---|
| Tensile Strength | 485 MPa (70,000 psi) minimum |
| Yield Strength | 250 MPa (36,000 psi) minimum |
| Elongation | 22% minimum in 50 mm (2 inches) |
| Reduction of Area | ≥ 30% |
| Hardness | ≤ 187 HB (Brinell Hardness) |
| Impact Test | Not required by default, can be provided if specified |
| Temperature Range | Suitable for -29°C to 425°C (-20°F to 800°F) |
| Heat Treatment | Usually supplied in normalized or forged condition |
| A105 Pressure Vessel Flange | Forged A105 Blind Flange |
| A105 Flange RTJ | A105 RF Blind Flange |
| CS HEAVY BLRF FLANGE | ANSI B16.47 Series A Blind Flange |
| ANSI B16.47 Series B Blind Flange | MSS SP-44 A105 Blind Flange |
| A105 Schedule 160 Blind Flange | ANSI/ASME B16.5 Blind Flange |
| ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges | ANSI/ASME B16.47 Series B Blind Flange |
| carbon steel slip on flanges | Custom A105 Blind Flange |
| A105 Forged Oversized Flange | A105 XXS Blind Flange |
An A105 Extra Heavy Blind Flange is a solid carbon steel flange manufactured from ASTM A105 material, designed with greater thickness to withstand higher pressure and stress. It is used to seal the end of pipelines or pressure vessels in demanding applications.
They are widely used in oil & gas, petrochemical plants, refineries, power generation, and high-pressure steam systems, where pipelines carry fluids or gases at extreme pressure and temperature.
A105 Extra Heavy Blind Flanges are generally available in high-pressure classes (600#, 900#, 1500#, and 2500#), suitable for critical service conditions.
Yes, they can be supplied in various diameters, drilling patterns, thicknesses, and coatings (galvanized, epoxy, anti-corrosion) to match specific industrial and project requirements.
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