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The tapped round flange with 4 black-core malleable cast iron mounting holes is an essential component of piping. It provides a strong connection between a threaded tube and a flat surface, such as a wall, floor or beam. Its primary function is to provide a fixed and solid anchor point to support, stabilize and direct fluid lines. It is a crucial support element that ensures grid stability and alignment, while maintaining the integrity of the facility. Its malleable cast iron design gives it mechanical robustness capable of supporting heavy loads.
Flanges are connecting and fastening parts that play a fundamental role in piping. Unlike fittings that are used to join tubes together, the threaded flange is designed to anchor the system. It provides a stable support surface to securely attach the tube to a support structure. This function is vital for absorbing vibrations, managing the weight of piping and fluids, and preventing unwanted movement that could compromise the sealing of the seals. It ensures that your network will remain in place, upright and secure.
This tapped flange excels in dispensing a variety of fluids. It is suitable for water, gas, steam pipes, and any non-corrosive liquid or gas. It is a support of choice for HVAC (Heating, Ventilation and Air Conditioning) systems, ensuring the attachment of ducts to building surfaces. The industrial furniture market has also widely adopted this component. The flange is the basic element for creating free-standing structures : table legs, shelf supports, wall fixings for hooks or lighting. Its black finish and 4 mounting holes contribute to a highly sought-after loft and vintage aesthetic.
The quality of this flange is certified by a rigorous design, manufacturing and control process, respecting industry standards. The parts are produced in accordance with the international standards EN 10242 and ISO 49, guaranteeing recognized reliability and performance. The material chosen is malleable cast iron EN-GJMB-350-10, as required by EN 1562. This material is selected for its high mechanical strength and its ability to withstand load stresses over the long term.
The performance of this flange is based on the quality of its tapping and surface protection.
The flange is tapped with a cylindrical female thread (Rp) that meets ISO 7-1 (BSPT). This thread is designed to receive the tapered male thread (R) of the pipe, ensuring a strong and tight mechanical connection.
For maximum durability and rust protection, the flange has a black finish applied with a minimum thickness of at least (micrometers). This protective layer against corrosion is essential to preserve the integrity of cast iron.
The 4 circular mounting holes ensure even load distribution and make it easy to anchor to various types of supports.
Quality is assured: each fitting is tested to ensure that it is watertight (of the thread).
To guarantee the efficiency and aesthetics of this round flange, a few assembly recommendations must be followed:
Choice of Fasteners: Use fixing screws or bolts that are appropriate for the material of the support (concrete wall, wood, metal) and sized for the load that the system will have to support.
Securing the Tube: Apply a suitable sealant (Teflon or joint paste) to the male thread of the tube before screwing it firmly into the female thread (Rp) of the flange.
Alignment: Ensure that the flange is fixed perfectly perpendicular to the axis of the pipe to avoid stress and ensure alignment of the pipes.
Decorative Use: For industrial furniture, the black flange is often left visible. For ground structures, the use of under-flange pads can protect the surface from scratches.
The table below provides a summary of the key specifications of this flange:
Characteristics | Specifications |
Fitting Type | Round Tapped Flange |
Material | Malleable Cast Iron with Black Core (EN-GJMB-350-10, according to EN 1562) |
Manufacturing Standards | EN 10242 and ISO 49 |
Areas of application | Water, Gas, Steam, Non-Corrosive Liquids/Gases, HVAC, Industrial Furniture |
Threading | Cylindrical Female (Rp), ISO 7-1 compliant (BSPT) |
Fixation | 4 Holes for bolts/screws |
Finishing | Black, anti-corrosion protective layer |
Finishing Thickness | |
Quality control | leak test |
Free Nuts (Union) | Gas type, according to ISO 228-1 (BSPP) (If applicable) |
Combinations | Diameter | Reference | Stock | Price | Add to cart |
Diameter : 1/2'' Reference : B321TNOIR-1/2 | 1/2'' | B321TNOIR-1/2 | Available later | €4.19 TTC | €4.19 TTC |
Diameter : 3/4'' Reference : B321TNOIR-3/4 | 3/4'' | B321TNOIR-3/4 | Available later | €5.75 TTC | €5.75 TTC |
Diameter : 1'' Reference : B321TNOIR-1 | 1'' | B321TNOIR-1 | Available later | €6.71 TTC | €6.71 TTC |
Diameter : 1''1/4 Reference : B321TNOIR-1/14 | 1''1/4 | B321TNOIR-1/14 | Available later | €9.60 TTC | €9.60 TTC |