Removable stainless steel baskets combine a perforated shell, closed bottom, seating rim and lifting handle. They capture coarse solids directly or carry a separate fine-mesh liner or filter bag, with the housing interface and filtration layer specified independently.
Perforated metal screensShare a drawing, reference sample or application requirements to discuss the configuration.
Perforated strainer baskets — Product view
The rolled perforated shell forms the active cylindrical surface. A longitudinal joint closes the shell; a welded bottom closes the flow path, and a reinforced upper rim locates the basket in its housing. Flat and formed bottoms, straight and inclined basket openings, and lifting handles define different installed geometries. The basket drawing identifies each feature separately.
Hole diameter, centre-to-centre pitch, hole arrangement and sheet thickness define the perforated surface. A 60° staggered pattern with 3 mm holes on 5 mm pitch has 32.6% geometric open area. The assembled basket has additional solid zones at its longitudinal seam, upper rim, bottom joint and support rings; its effective flow area is calculated from the exposed perforated surface.
An unlined basket intercepts particles at its perforations. A mesh-lined basket uses the woven liner as the finer separation layer and the perforated shell as mechanical support. In a bag-filter housing, the basket supports the filter bag against differential pressure while the bag material determines filtration grade. These constructions have separate media specifications and cleaning procedures.
The seating rim carries the basket at the housing shoulder. Its outside dimension, contact width, gasket location and installed height determine the sealing interface. The handle fits below the cover when assembled and provides a lifting point during service. Removal clearance includes basket depth and handle height. Cleaning follows the exposed hole pattern and bottom seam so retained solids leave the basket completely.
304 and 316L stainless steel are specified by component: perforated shell, bottom, rim, handle and any retaining ring. The fabrication sequence is perforation, blank cutting, rolling, seam joining, bottom and rim assembly, deburring and cleaning. Smooth hole edges and continuous attachment of the bottom protect a fitted bag or mesh liner during installation and removal.
The dimensional schedule records basket outside diameter, body depth, bottom profile, rim geometry, handle height and support positions. Inspection checks the hole pattern and thickness, roundness, overall height, seam continuity, rim seating and handle attachment. Replacement baskets use the housing seat and withdrawal envelope as the dimensional datum.
A replacement strainer basket is the removable screening or support component inside a basket strainer. In a simplex basket strainer, the housing contains one operating basket. Match the replacement to the seating rim, installed depth, handle clearance and seal location. The perforated basket sizes on this page identify basket geometry; the assembled housing has its own pressure and connection specification.
The five numbered 304 stainless steel basket sizes below retain their own body geometry, hole options and thickness options. Dimensions are in millimetres; the seating rim is dimensioned separately on the housing drawing.
| Basket size | Body diameter × length (mm) | Hole diameter (mm) | Sheet thickness (mm) |
|---|---|---|---|
| 1 | 180 × 370 | 1 / 2 / 4 | 1 / 1.2 / 1.5 |
| 2 | 180 × 730 | 1 / 2 / 4 | 1 / 1.2 / 1.5 |
| 3 | 110 × 220 | 4 | 1.2 |
| 4 | 110 × 330 | 4 | 1.2 |
| 5 | 110 × 500 | 4 | 1.2 |
| Component | Defined geometry or function |
|---|---|
| Perforated shell | Diameter, depth, hole diameter, pitch, pattern and sheet thickness |
| Bottom | Flat or formed profile; seam and drainage arrangement |
| Seating rim | Outside dimension, contact width, installed height and gasket location |
| Lift handle | Attachment points, folded or fixed height and withdrawal clearance |
| Liner or filter bag | Separate retention grade, attachment and cleaning method |
A perforated basket screens through its open wall. A solid bottom redirects liquid toward the perforated side; a perforated bottom provides an additional screened outlet. Identify the bottom construction on the drawing and define the open wall height independently from the seating rim and bottom joint.
The rim, sealing face and handle perform different jobs. Match the rim to the housing seat, then define the gasket position and the handling clearance. Measure the finished body at several heights to check fit. Protect the rim and bottom against distortion during transport, and keep handles from loading adjacent baskets.
| Feature or construction | Role in the assembly | Drawing or acceptance check |
|---|---|---|
| Perforated sidewall | Screening or support surface | Hole size, pitch, wall thickness and active height |
| Solid bottom | Closes the axial outlet | Bottom joint and sidewall flow path |
| Perforated bottom | Adds a screened outlet area | Hole pattern and bottom support |
| Seating rim | Carries and locates the basket | Outside diameter, thickness and contact face |
| Lifting handle | Allows removal | Attachment and installed extraction clearance |
1 seating rim; 2 screening body; 3 lifting handle; 4 bottom. D is the rim diameter and H the body projection below the rim. Check the handle and lifting path separately.
| Supply item | Order basis |
|---|---|
| Production lead time | 2–3 weeks after order and drawing confirmation. |
| Trial orders | Small trial quantities for fit and process evaluation. |
| Regular production orders | 50 pieces or US$3,000 per order. |
| Quotation basis | Material, finished dimensions, filter construction, connections and quantity. |
| Parameter | Specification | Notes |
|---|---|---|
| Shell and bottom | Rolled perforated shell with attached bottom | The rim locates the removable basket in its housing. |
| Material | 304 / 316L stainless steel | The five numbered bag-support sizes use 304 stainless steel. |
| Perforation options | 1/16 · 3/16 · 1/4 in | Individual hole sizes for separate basket specifications. |
| Open-area calculation | 32.6 % | 3 mm holes on 5 mm pitch; 60° stagger; perforated-sheet geometric area. |
| Installed geometry | Body diameter, depth, rim and bottom profile | Rim geometry and handle clearance are dimensioned independently. |
| Sealing and lifting | Seating rim, handle and housing clearance | The gasket contact and cover clearance define the installed interface. |
Include these details when discussing your requirements.
The removable basket captures scale and debris; access through the housing cover provides a direct cleaning route.
The shell and bottom form a closed screen envelope, with a fitted seating rim controlling the bypass path around the basket.
The basket supports a filter bag while its perforations distribute flow over the bag surface.
The bag material defines the filtration rating. The perforated basket provides support and a flow path around that bag.
Body diameter and depth define the envelope; rim contact, bottom profile, handle height and cover clearance complete the installation dimensions.
Hole diameter and pitch determine sheet open area. Effective basket area also accounts for seams, rims, support rings and the surface exposed to flow.
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