D-Type Stainless Steel Support Rod
Short Description:
D-Type Stainless Steel Support Rod is a shaped support profile used behind wedge wire surface wires in Johnson-type and welded wedge wire screen structures. It provides structural support, maintains screen rigidity and forms welded intersections with the surface profile wire. SAKY STEEL supplies customized D-shaped support rods in stainless steel grades such as 304 and 316 according to profile drawings, dimensions and screen requirements.
D-Type Stainless Steel Support Rod Overview
D-Type Stainless Steel Support Rod is a shaped support profile used in welded wedge wire screens, Johnson-type screen structures, filter cylinders and screen panels. Unlike the wedge-shaped surface wire that forms the filtering slot, the support rod is positioned behind the working wires to provide structural strength and maintain screen geometry.
SAKY STEEL supplies D-shaped stainless steel support rods according to customer drawings and screen-manufacturing requirements. Material grade, profile width, height, radius, tolerance and straight-length requirements can be customized according to the finished screen design.
D-Type Support Rod Quick Information
Product: Stainless Steel Support Rod
Profile: D-Type / D-Shaped Profile
Common Grades: 304 / 316 / Other Agreed Grades
Surface: Bright / Smooth / Customized
Supply Form: Straight Length / Coil When Feasible
Dimensions: According to Customer Drawing
Application: Wedge Wire Screens / Johnson-Type Screens / Screen Cylinders
Function of the Support Rod
In a welded wedge wire screen, the surface profile wires create the filtration slots while the support rods run perpendicular to them. Each intersection is welded to form a rigid screen structure.
| Function | Purpose |
|---|---|
| Structural Support | Supports the wedge-shaped surface wires and helps the finished screen carry mechanical loads. |
| Welding Base | Provides the contact surface for resistance welding with the working profile wires. |
| Screen Stability | Helps maintain wire spacing, screen shape and structural rigidity. |
| Load Distribution | Transfers operating loads across the welded screen structure. |
Surface Wire vs Support Rod
| Feature | Wedge Surface Wire | D-Type Support Rod |
|---|---|---|
| Main Function | Forms the screening / filtration surface | Provides structural support |
| Typical Profile | V-shaped / wedge-shaped | D-shaped support profile |
| Position | Working surface of the screen | Behind / beneath the surface wire |
| Design Priority | Slot size, flow and anti-plugging performance | Rigidity, span and load capacity |
Custom D-Type Support Rod Dimensions
D-shaped support rods should be ordered according to the required cross-sectional geometry. For custom profiles, please provide a drawing with the critical dimensions and tolerances.
| Profile Parameter | Information to Specify |
|---|---|
| Profile Width | Overall section width |
| Profile Height | Overall section height |
| Flat Surface | Required flat-side dimension for welding contact |
| Rounded Section | Radius or curved-bottom geometry |
| Length | Required straight length or other delivery form |
| Tolerance | Critical dimensional tolerances according to screen design |
304 vs 316 Stainless Steel Support Rod
| Grade | Main Characteristic | Typical Selection |
|---|---|---|
| 304 | Good general corrosion resistance and economical material selection | General screening, industrial filtration and water applications |
| 316 | Improved corrosion resistance in chloride-containing and more aggressive environments | Water treatment, chemical processing and demanding wet-service screens |
D-Type Support Rod Manufacturing & Inspection
| Inspection Item | Purpose |
|---|---|
| Material Verification | Confirm stainless steel grade and material traceability |
| Profile Dimensions | Verify width, height and D-shaped geometry |
| Straightness | Check straight-length condition for downstream screen welding |
| Surface Inspection | Check surface condition and visible defects |
| Documentation | MTC and dimensional inspection records as required |
Applications of D-Type Support Rod
| Wedge Wire Screens Structural support beneath working wires | Screen Cylinders Longitudinal support for cylindrical screens | Filter Elements Support profiles for welded filter structures |
| Water Well Screens Internal support for continuous-slot screens | Water Treatment Screen and filtration structures | Industrial Separation Structural support for screen assemblies |
Support Rod Packaging
D-type stainless steel support rods are packed according to profile dimensions, straight length, unit weight and transportation requirements.
Frequently Asked Questions
What is a D-type support rod?
A D-type support rod is a shaped structural profile used beneath wedge-shaped working wires in welded screen structures. Its main purpose is to support the surface wires and strengthen the finished screen.
Is a support rod the same as wedge wire?
No. Wedge wire forms the filtering surface and slot openings, while the support rod provides structural support behind the working wires.
Can D-shaped support rods be customized?
Yes. Cross-sectional width, height, curved section, straight length and dimensional tolerance can be reviewed according to customer drawings.
Can D-type rods be used for Johnson-type screens?
Yes. Shaped support rods are used in welded wedge wire and continuous-slot screen constructions where they support the working profile wires.
Request a D-Type Stainless Steel Support Rod Quote
Send your profile drawing, stainless steel grade, cross-sectional dimensions, length, tolerance and quantity. SAKY STEEL will review the support-rod requirements before confirming the offer.
