Maidong reviews replacement extruder screens and screen packs for compatible pipe and profile melt-filtration equipment. Send your screen drawing, current layer schedule and material requirements for a quotation.
Single woven screens, loose multi-layer sets, spot-welded packs and rimmed constructions are specified against confirmed dimensions and assembly details. Match the screen to the filter housing and process, rather than the finished pipe size.
The mesh assembly retains suitable solid contamination from the polymer melt in a compatible filtration system before the pipe or profile die. The screen requires the support and retention arrangement specified for that equipment.
Process context: polymer melting → equipment-defined filtration → forming die → downstream calibration, cooling and haul-off. The exact arrangement follows the line design.
This page covers extrusion melt-filter components. A filter installed in a water pipe or process pipeline is a different application. Explore the complete extruder screen and screen pack range for available construction enquiries.
State the actual resin grade, additives and feed condition. Provide the approved screen specification and filtration objective instead of selecting mesh from pipe diameter.
Identify the material and relevant melt stream. Tube wall thickness is product information, not a direct conversion to mesh opening.
Describe the compound and the equipment-defined filter position. For PVC or filled formulations, submit the existing approved arrangement for review.
Label each filter by extruder or melt stream. Keep the screen requirements for different materials separate, even when they feed the same final product.
Individual mesh layers supplied to a complete schedule with a stated flow direction.
Layers attached at specified points. Confirm weld locations and maximum finished thickness.
Edges retained by a specified rim. State rim alloy, width, profile and thickness separately.
Reference / custom available: round/disc, oval, kidney, rectangular, annular and drawing-defined shapes. An annular finished pipe does not automatically require an annular screen.
Photos show existing Maidong product construction examples, not verified installations on a particular pipe line.
Reference / custom available: SS304, SS316 and SS316L woven mesh can be reviewed against the complete requirements. Confirm alloy, weave and availability before ordering. No universal temperature or pressure rating is implied.
| Parameter | Information to provide | Procurement purpose |
|---|---|---|
| Component dimensions | OD or full profile, ID where present, tolerances | Match the filter cavity, not the pipe diameter |
| Finished thickness | Total pack and rim thickness; recess depth | Confirm assembly fit and contact areas |
| Every mesh layer | Alloy, mesh count, wire diameter and weave | Define the cloth beyond a mesh number |
| Layer direction | Full sequence, inlet face and support layers | Remove assembly ambiguity |
| Edges and attachment | Loose, weld positions or rim drawing | Define retention and handling construction |
| Material stream | Resin, additives, filler and relevant feed details | Identify the actual melt passing through this filter |
| Equipment interface | Changer drawing, active opening and breaker plate/support | Assess the requested component format |
| Operating / cleaning duty | Known throughput, melt conditions and backflush requirements | Review suitability against the equipment limits |
| Acceptance requirement | Target contamination or observed product issue | Avoid promising unrelated dimensional corrections |
| Supply details | Quantity by configuration, packing, documents and destination | Prepare a comparable quotation |
For square mesh, include wire diameter. For Dutch weave, provide the complete warp/weft construction and relevant filtration data. Mesh count is not a guaranteed micron retention rating.
Reference / custom available: 20/40/80/40/20 mesh, 20/60/100 mesh and 40/80/200/80/40 mesh illustrate multi-layer descriptions. They are not fixed settings for HDPE pipe, PP tubing or PVC profiles.
The final schedule follows the extrusion process, material, filtration requirement and support arrangement. Confirm each layer and flow direction using our screen pack mesh combinations and layer-order guide.
A machine model is useful context, but a replacement needs the actual cavity drawing, recess depth, active opening and support details. Confirm overall thickness and any critical edge contact or orientation features.
Manual, continuous and backflush systems can use different component formats. Do not assume a flat pack replaces a belt, candle or other proprietary element.
For coextrusion, assign a separate part identifier to each filter configuration. The number of finished product layers does not determine mesh-layer count.
Describe the observed contamination and how the pipe or profile will be inspected. Filtration is one process step; a new screen cannot be promised to correct wall variation, all surface marks or every quality issue.
When considering a different specification, compare product condition, pressure trend and output under comparable conditions and follow equipment limits. Finer mesh and more layers are not automatically better.
If the enquiry centers on contaminated recycled feed, see plastic recycling extruder screen packs. Any product-compliance documentation required for the final pipe application must be stated separately.
Start with dimensions, the complete layer schedule, quantity and delivery country. Include the filter drawing or measured sample details, resin, relevant melt stream and current filtration requirement.
Mark unknown details “to confirm.” Photos clarify visible shape and construction but do not verify alloy or hidden layers. Use a drawing revision and separate quantities for each configuration.
Use our screen pack drawing and RFQ checklist to prepare dimensions, the complete layer schedule and order quantities.
It is a mesh filtration assembly installed in compatible polymer melt-filter equipment before the forming die. It is not a strainer installed inside the finished pipe.
No. The screen outside diameter and profile follow the filter cavity and support arrangement. Finished pipe diameter and wall thickness do not define replacement screen dimensions.
Provide the approved working specification or your filtration objective, together with resin, additives, feed condition and equipment details. There is no universal HDPE or PP pipe mesh recommendation.
Submit the actual filtration arrangement and approved component specification for review. Do not assume every PVC line uses a conventional screen pack or that a specification from a PE line can be transferred unchanged.
The finished product shape does not establish the screen shape. Specify round, annular or another profile from the actual filter drawing, including any central opening and its tolerance.
Identify each extruder or melt stream, its material and the corresponding filter component. Finished pipe or profile layers are different from the mesh layers within a screen pack.
No such result is guaranteed. Filtration addresses suitable retained contamination. Dimensional or surface issues can require investigation of the die, material, controls and downstream process as well.
Only after confirming the actual component format, support and cleaning duty. Continuous systems do not all use the same mesh assembly, and welding alone does not prove reverse-flow suitability.
Send the component drawing, dimensions and tolerances, alloy, mesh count, wire diameter and weave for every layer, layer direction, edge details, quantity and destination. Add the resin, filter equipment and filtration objective.
Send your component specification and pipe or profile extrusion requirements to Maidong Metal Wire Mesh Products Co., Ltd. We will review the construction and quote against the confirmed requirements.
