65mm MS or Carbon Steel
Define the pipe grade, schedule, weld scope and coating. In addition, specify any required bolted end flange separately.
Mesta Inc. manufactures 65mm puddle flanges for tanks, pump rooms, treatment plants and concrete-wall penetrations. First, we verify the pipe standard and actual OD; then, we follow the approved plate dimensions, sleeve length and connection details.
A 65mm pipe penetration often serves water distribution, pump-room drainage or tank connections. However, water can follow the interface between the pipe and concrete when the detail lacks a suitable water-stop barrier.
A 65mm puddle flange places a projecting plate around the pipe or sleeve. Consequently, the plate interrupts the direct seepage path through the concrete. It therefore supports the penetration design for tanks, chambers, walls, slabs and treatment facilities.
Mesta Inc. manufactures standalone puddle collars and complete 65mm puddle flange pipe assemblies. Buyers can define the material, plate geometry, sleeve length and end connections according to their approved drawing.

The terms 65mm, DN65 and 2½ inch do not define every physical dimension. In fact, the pipe OD and wall depend on the material and dimensional standard. Therefore, the purchaser should identify the complete pipe system in the enquiry.
| Size designation | 65mm or DN65; purchaser to confirm the governing pipe standard and actual outside diameter. |
|---|---|
| Inch reference | Commonly associated with nominal 2½-inch pipe, subject to dimensional verification. |
| Pipe wall | Schedule, SDR, pressure class or actual wall thickness according to the pipe system. |
| Pipe materials | Mild steel, carbon steel, stainless steel, PVC, uPVC, HDPE or another approved material. |
| Plate diameter | Total OD or radial projection beyond the pipe as the penetration detail specifies. |
| Plate thickness | Project-defined value compatible with material, attachment method and service. |
| Sleeve length | Length based on wall thickness, required projection and site-connection access. |
| End connections | Plain, bevelled, threaded, socket, spigot or flanged ends where technically suitable. |
| Surface protection | Compatible primer, paint, galvanizing, passivation or project-defined finish. |
| Inspection | Material, dimensional, joint, coating and documentation checks as agreed. |
Dimensional note: Do not select the puddle flange bore from “65mm” alone. Instead, send the pipe material, standard and measured outside diameter so the assembly matches the intended pipe.
Material affects the dimensional system, attachment method, corrosion resistance and available end connections. Consequently, each order requires a complete material and pipe designation.
Define the pipe grade, schedule, weld scope and coating. In addition, specify any required bolted end flange separately.
For corrosive or hygienic service, state the stainless grade, wall, finish and material-certification requirements.
Provide the dimensional standard, pressure class and actual OD together with an approved plastic-compatible attachment method.
Identify the PE grade, SDR and OD. Moreover, coordinate the assembly with the specified joining and movement requirements.
Compare stainless steel puddle flanges, MS puddle flanges and PE puddle flanges.
The plate must provide the drawing-defined obstruction without creating congestion around reinforcement. Therefore, coordinate these design points:
System note: The central puddle plate acts as the water stop in the concrete. By contrast, an end flange provides a separate piping connection and needs its own standard, rating, facing and drilling details.
A controlled sequence links the approved penetration drawing with the finished assembly and its site position.
First, confirm the material, standard, OD, wall thickness, service and connection ends.
Next, verify the wall thickness, plate dimensions, plate position and assembly length.
Then, prepare the pipe and plate and complete the approved material-compatible attachment.
Inspectors check dimensions, plate alignment, joint condition, ends and finish before release.
At site, installers maintain the required line, level and end projection during concrete work.
Finally, the site team examines the exposed ends before completing joints and specified tests.
The inspection plan should verify that the assembly matches both the pipe system and penetration drawing. Accordingly, typical checks include:
Inspectors compare the manufactured bore or pipe OD with the confirmed dimensional standard.
They verify the plate OD, thickness, position and alignment against the approved drawing.
The team examines the welded, bonded, fabricated or mechanical attachment as required.
Finally, inspectors check connection details, surface protection, marking and agreed documents.
Projects use 65mm puddle flanges for medium-bore services that cross concrete boundaries. For example, common project-defined applications include:
Additionally, buyers can review water-tank puddle flanges, concrete-wall penetrations and fire-water applications.
For an accurate technical and commercial review, send these details:
It is a water-stop collar or pipe assembly for a compatible 65mm-class penetration through concrete. Its projecting plate helps interrupt seepage along the outside of the pipe.
Suppliers often associate these descriptions. Nevertheless, buyers should confirm the governing standard and actual pipe OD before ordering.
Not automatically. Nominal metric and inch descriptions may refer to a similar size class, but the physical OD depends on the pipe standard and material.
Yes. In that case, specify the flange standard, size, pressure designation, facing, drilling and orientation separately from the puddle plate.
Subject to feasibility, buyers can request mild steel, carbon steel, stainless steel, PVC, uPVC, HDPE or another approved material.
Typical uses include tanks, pump rooms, treatment plants, sumps, valve chambers and service-water penetrations.
Send the pipe standard, actual OD, wall, material, plate dimensions, sleeve length, connection ends, quantity and drawing.
Send Mesta Inc. your pipe dimensions, puddle plate details, material, drawing, quantity, inspection scope and delivery requirements. Then, our team will review the enquiry and confirm the appropriate manufacturing scope.
+91 22 2386 0222 / +91 22 2386 0223 +91 22 67492118 / +91 22 6636 2118 +919820007728 +919867899897 +919819546861
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