Custom profile guide
Cut-to-Length and Secondary Processing for Custom PVC Profiles
The cross-section is only part of a finished profile's definition. Cut lengths, hole locations, marks and packaging can affect how the part is received and assembled. Describe these requirements alongside the drawing or sample so they can be reviewed before production.
Cut-to-length: define the finished piece
We can review cutting profiles to the lengths your project requires. Specify the finished length, the unit used and the required length tolerance. If an order contains several lengths, list each length and its quantity separately.
Explain whether the ends are visible, fitted into another part or used as a reference for later operations. Include any specific end condition in the drawing or brief. A cutting requirement is confirmed for the project; it should not be inferred from the length of a display sample.
Punching: make the hole positions unambiguous
Show the hole shape, size, position and spacing on the drawing. Identify the reference face or end from which the positions are measured. If the part is handed or has a front and back, make that orientation clear.
Include the intended fastener or mating part when it helps explain the requirement. We review punching against the confirmed drawing and profile. If a hole or feature is needed for a fit, identify the relevant tolerance rather than assuming a standard value.
Engraving: state the mark and its location
Provide the required artwork or text, its position, orientation and the intended appearance. Tell us whether the mark is functional, decorative or used to distinguish parts. Include the material and colour because the proposed engraving needs to be reviewed with the profile.
Use a drawing or reference image to show the result you expect. The agreed project requirements, rather than a general engraving label, define the work.
Welding: review the material and joint design
Profile welding is assessed for the material and structure. Share the joint geometry, the parts to be joined and how the assembly will be used. Tell us which fit, appearance or functional requirements need to be checked.
Do not assume that one welding arrangement applies to every profile or material. We review the proposed arrangement with you and confirm the applicable requirements for the project before proceeding.
Create one operation list
| Operation | Information to identify |
|---|---|
| Cutting | Finished length, quantity per length, unit and required tolerance. |
| Punching | Hole geometry, positions, reference faces, orientation and fit requirements. |
| Engraving | Text or artwork, location, orientation and reference appearance. |
| Welding | Material, joint geometry, intended use and agreed review requirements. |
| Packaging | Protection, pack quantity, labels, handling and delivery requirements. |
Mark operations that are required and leave the others as not required. This helps avoid treating every listed capability as part of your order.
Review the complete part before approving production
If processing affects assembly or appearance, discuss whether the trial sample should include that processing. Check the finished part against the agreed drawing and sample requirements. If several lengths or orientations are involved, identify the versions covered by the approval.
Custom packaging can also be reviewed with the product and delivery requirements. At Dalang, PVC extrusion is our main focus. Secondary operations and packaging are discussed for the individual profile, with PE, ABS and PP enquiries reviewed against the project requirements.