Duplex Puddle Collar
A duplex water-stop collar fits a compatible 90mm pipe according to the approved attachment detail.
Corrosion-resistant 90mm water stops made to approved drawings
Duplex 90mm Puddle Flange Manufacturer
Mesta Inc. manufactures duplex 90mm puddle flanges with project-defined pipe dimensions, plate geometry and connection ends. Moreover, we control material traceability, welding, inspection and surface treatment according to the approved specification.
90mm Puddle Flange in Project-Specified Duplex Steel
A duplex 90mm puddle flange creates a corrosion-resistant water stop around a compatible pipe penetration. Its projecting plate interrupts the direct path along the pipe-to-concrete interface. Consequently, the component supports watertight walls, tanks, slabs and containment structures.
However, “duplex” does not identify one universal grade, and “90mm” does not always identify the same pipe dimension. Therefore, buyers should state the exact duplex designation, product-form specifications, pipe standard, measured OD and wall thickness.
Mesta Inc. manufactures each duplex puddle flange to an approved drawing. Moreover, our team reviews the pipe, plate, optional end connections, welding, heat input, inspection, cleaning and documentation as one fabrication package.
90mm OD verificationWe confirm whether 90mm identifies actual pipe OD or another project size designation.
Exact duplex gradeThe purchaser specifies 2205, 1.4462 or another duplex designation only when the project requires it.
Controlled fabricationApproved welding and heat-input controls help protect the required duplex material condition.
Material verificationPMI, certificates and traceability can identify pipe, plate and connection materials as specified.
Duplex 90mm Puddle Flange Specifications
A complete specification must define both the 90mm pipe system and exact duplex grade. Therefore, include the following details in the drawing and bill of materials.
| Size designation | 90mm plus the governing pipe standard, actual outside diameter and tolerance. |
|---|---|
| Pipe wall | Specified wall thickness or schedule according to the selected product form. |
| Duplex grade | Exact UNS, EN/DIN or ASTM grade designation required by the project. |
| Pipe specification | Separate material standard, grade, manufacturing route and dimensions. |
| Plate specification | Separate duplex plate standard, grade, OD or width, thickness and opening. |
| Plate position | Drawing-defined location along the pipe and within the concrete section. |
| End connections | Plain, bevelled or flanged ends with separately specified flange details where required. |
| Welding controls | Approved procedures, filler material, heat-input/interpass controls and acceptance criteria. |
| Surface treatment | Project-specified cleaning, pickling, passivation or other compatible finish. |
| Inspection records | Material certificates, PMI, weld/NDT reports, dimensions and release documents as agreed. |
Grade note: Do not use “duplex” as the complete material specification. Instead, identify the exact grade and product-form standard for the pipe, puddle plate and every connection component.
Duplex 90mm Puddle Flange Configurations
The penetration drawing determines whether the project needs a collar, straight pipe assembly or connected flange. Consequently, buyers can define several configurations.
Duplex Pipe Assembly
A straight duplex pipe and plate create one fabricated wall sleeve with controlled overall dimensions.
Single-Flanged Assembly
One end flange provides a bolted connection. Meanwhile, the opposite end uses the drawing-defined preparation.
Double-Flanged Assembly
Two end flanges support bolted connections on both sides while a central plate forms the water stop.
Review related DIN 1.4462 puddle flanges, stainless steel puddle flanges and puddle flange pipes.
Selecting Duplex Steel for a 90mm Puddle Flange
The project designer should choose a duplex grade from the complete service conditions. Therefore, evaluate these factors before procurement:
- Chloride exposure: consider concentration, temperature, wetting, deposits and crevice locations.
- Service fluid: identify water chemistry, process chemicals and cleaning agents.
- External environment: review concrete contact, groundwater, coastal atmosphere and embedded conditions.
- Welding: define procedures that suit the grade, thickness, joint and required properties.
- Dissimilar metals: assess adjoining materials and specify isolation where the design requires it.
- Inspection scope: state PMI, ferrite measurement, NDT, corrosion tests or other requirements only when applicable.
Selection note: Duplex steel does not remove the need for correct detailing. Instead, the designer must coordinate grade, welding, surface condition, joint geometry and exposure.
Duplex 90mm Puddle Flange Manufacturing Process
A controlled process protects material identity, weld quality and the finished water-stop geometry.
Review Material Requirements
First, confirm the exact duplex grades, product standards, 90mm pipe dimensions and plate geometry.
Verify and Segregate
Next, match certificates and markings while protecting duplex materials from carbon-steel contamination.
Prepare Components
Then, cut and prepare the pipe and plate with suitable tooling and controlled surface handling.
Fit and Weld
Qualified personnel set the plate position and follow the approved welding procedure and thermal controls.
Inspect and Treat Surfaces
Afterwards, inspectors complete specified NDT before cleaning, pickling or passivation as required.
Verify and Release
Finally, the team checks dimensions, marking, protection and the agreed quality dossier.
Quality Control for Duplex 90mm Puddle Flanges
The inspection plan should verify material identity, fabrication quality and surface condition. Accordingly, typical controls include:
Material Traceability and PMI
First, certificates, markings and specified PMI connect the pipe, plate and flanges to the approved BOM.
Welding Records
Weld maps, procedure references, welder identity and thermal-control records support traceability.
NDT and Dimensions
Inspectors perform specified examination and verify pipe OD, plate geometry, position and end orientation.
Surface Condition
Finally, the team checks cleanliness, contamination control, passivation requirements and protection.
Duplex 90mm Puddle Flange Applications
Projects may select duplex for 90mm penetrations exposed to corrosive water or demanding industrial environments. For example, applications may include:
- Coastal and marine concrete structures
- Desalination and high-chloride water systems
- Industrial wastewater and effluent plants
- Chemical-treatment and dosing areas
- RCC tanks, pits and containment walls
- Cooling-water and process-water penetrations
- Offshore or near-shore utility structures
Additionally, buyers can review water-tank puddle flanges, concrete-wall penetrations and super-duplex adjustable puddle flanges.
Details Required for a Duplex 90mm Puddle Flange Quote
For accurate material review, fabrication and pricing, send these details:
- Exact duplex grade and product-form standards
- 90mm pipe standard, actual OD and wall thickness
- Puddle plate material, OD or width, thickness and position
- Concrete wall or slab thickness and assembly length
- Plain, bevelled, single-flanged or double-flanged ends
- Flange standard, class, facing, drilling and orientation
- Applicable construction code and welding requirements
- PMI, ferrite, NDT or other inspection requirements
- Cleaning, pickling, passivation and contamination controls
- Quantity, documentation, packing and delivery schedule
Duplex 90mm Puddle Flange Frequently Asked Questions
What is a duplex 90mm puddle flange?
It is a water-stop collar or pipe assembly made from a specified duplex grade for a compatible 90mm-class penetration through concrete.
Does 90mm always identify the actual pipe OD?
No. It may identify actual OD or another size designation. Therefore, provide the pipe standard, measured OD and wall thickness.
Which duplex grade should I specify?
The project designer must select the exact grade from the service environment and governing specification. Do not use “duplex” as the complete material designation.
Is duplex 2205 the same as super duplex?
No. Duplex and super-duplex families use different grade designations and properties. Consequently, buyers must state the exact required grade.
Can the assembly include flanged ends?
Yes. Buyers can specify one or two end flanges with their material, standard, class, facing, drilling and orientation.
Which inspections can buyers request?
Depending on the specification, the scope may include material certificates, PMI, ferrite checks, visual inspection, PT and other NDT.
What should I send for a quote?
First, send the exact grade, pipe OD and wall. Then, provide the plate, flange, welding, inspection, surface-treatment and delivery requirements.
Request a Duplex 90mm Puddle Flange Quote
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.