Petroleum ASTM A105 Carbon Steel Flange Rings With Non Standard Bolt Holes

Custom Shaped Petroleum Flange Rings (Non-Standard Bolt Holes) ASTM A105 Carbon Steel High Pressure Corrosion Resistant

1: Product Overview:

Our Custom-Shaped Petroleum Flange Rings are engineered for demanding oil and gas applications requiring high-pressure resistance, corrosion durability, and non-standard configurations. Manufactured from ASTM A105 carbon steel and precision-machined to accommodate complex geometries and bespoke bolt hole patterns, these flanges ensure reliable performance in pipelines, wellheads, and refinery systems.

2, Features & Specifications

1. Superior Material Properties

Material: ASTM A105 Carbon Steel (Forged & Normalized)

Standards Compliance: ASME B16.5, API 6A, NACE MR0175

Mechanical Properties:

Tensile Strength: ≥485 MPa | Yield Strength: ≥250 MPa

Hardness: ≤187 HB (Annealed for Machinability)

Corrosion Resistance: Ideal for CO₂/H₂S environments with optional coatings

3. Precision Manufacturing

Custom Geometry: Laser-scanned profiles for non-circular or asymmetrical shapes.

Non-Standard Bolt Holes: CNC-drilled with positional accuracy ±0.2mm

Pressure Rating: Class 150 to Class 2500

Surface Finish: Machined to Ra ≤3.2μm (or coated for enhanced corrosion protection).

3. Technical Specifications

Size Range: 2" to 48" nominal diameter (Customizable dimensions).

Temperature Range: -29°C to 425°C (Compatible with cryogenic to high-heat operations).

Dimensional Tolerance:

Outer Diameter: ±1.5mm | Bolt Hole Circle (BHC): ±0.5mm.

4, Advantages:

✅ Bespoke Design Flexibility

Adapt to non-standard bolt patterns and irregular shapes without costly molds, ideal for retrofit or legacy systems.

3D modeling support (STEP/IGES files) for seamless integration into existing pipelines.

✅ High-Pressure Integrity

ASTM A105’s forged structure ensures uniform grain flow, critical for high burst strength in oilfield operations.

✅ Rapid Turnaround

Prototype to bulk production in 15-30 days (Small batches accepted).

✅ Compliance & Safety

NACE MR0175 certification available for sour gas (H₂S) environments.

100% PT (Penetrant Testing) or UT (Ultrasonic Testing) to detect subsurface defects.

5, Applications:

Oil & Gas: Pipeline connectors, wellhead flanges, subsea equipment.

Refineries: High-temperature reactor flanges, valve manifolds.

Petrochemical: Acid-resistant flange joints, compressor systems.

Energy: Hydraulic power units, geothermal piping.

6, Manufacturing process

1. Forging & Shaping Hot forging ASTM A105 billets into near-net shapes.

2. Heat Treatment Normalizing (900-950°C) to refine microstructure.

3. CNC Machining 5-axis CNC milling for custom profiles and bolt holes.

4. Surface Finishing Shot blasting + anti-corrosion coatings (optional).

5. Quality Control Dye penetrant (PT) / ultrasonic (UT) testing + 3D CMM.

JimaFor provides professional R & D services and customized production of high - end components
Our main business specializes in the R & D and custom production of high - end metal components, catering to the needs of various industries and focusing on complex and challenging products.

Our Advantages
Our strength lies not only in the ability to manufacture and supply forgings, castings, and machined parts but also in our strong optimization and integration capabilities. We are able to integrate advanced manufacturing technologies from across China, providing customized solutions tailored to meet the unique needs of our customers.

Our Mission
By integrating advanced technologies and manufacturing resources, we are dedicated to addressing the following challenges for our customers: technical issues, sourcing, quality, lead time, and cost concerns.