A custom pultruded profile needs its own mould (die), so the specification has to be right before tooling starts. This page is the checklist we use; you can copy it into an email.
| # | Item | What to send | Example |
|---|---|---|---|
| 1 | Drawing or sample | 2D/3D drawing (DWG, DXF, STEP, PDF) or a physical sample; sketch with units if you have no drawing | 50 × 50 × 5 mm square tube |
| 2 | Dimensions and tolerance | Section size, wall thickness, length, allowed deviation, holes or slots | Length 6 m, ± 5 mm |
| 3 | Application and environment | What it holds, where it is used, indoor or outdoor, UV, chemicals (name and concentration), temperature | Outdoor walkway beside a cooling tower |
| 4 | Mechanical, electrical and fire needs | Load and span, insulation requirement, fire standard and class | ASTM E84 Class A |
| 5 | Material | Fibre (glass, carbon, basalt), resin family, surface (smooth, textured, veil/gelcoat), colour (RAL/Pantone) | Isophthalic polyester, RAL 7035 |
| 6 | Quantity and delivery | Annual quantity, first order, packing and shipping needs | 2,000 m first order |
| 7 | Post-processing | Cutting, drilling, edge sealing, labelling | Cut to 2.4 m, drill 2 holes |
Common drawing mistakes
- No units, or mixed mm and inch.
- Sharp internal corners: ask for small radii, they help resin flow and make the profile easier to pull.
- Tolerances tighter than pultrusion normally holds – ask us what is realistic before you fix them.
- Wall thickness missing on hollow sections.
- No statement of which direction carries the load.
Standard section or custom?
If a standard section from our profile range meets the load and environment, it avoids the one-time cost of a new die. Choose a custom section when the shape, wall thickness or function cannot be met by a standard one and the quantity justifies the die.
What happens after you send it
- We review feasibility and suggest changes that make the profile easier to pull or cheaper to tool.
- You confirm the profile parameters in writing.
- We design and build the mould, then make a trial sample for new profiles so you can check fit and surface.
- After approval we produce, inspect (size, surface, colour, mechanical sampling as agreed) and pack.
Tips that save a week
- If you only have an application, describe the load and the environment; we can propose a section.
- Choose the resin from the environment, not from the price: see the resin guide.
- Remember that a custom profile pays back through volume: the die is a one-time cost. See our moulds and how the process works.
Send us your requirement
Guangdong Haikuo Composite Materials Co., Ltd. (Huizhou, Guangdong) designs pultrusion moulds in-house and produces custom FRP profiles. Send a drawing, a sample or just the application and the environment, and we will tell you what is feasible.
Browse the standard FRP profiles first – a standard section may already do the job.
Email: [email protected] | WhatsApp: +86 189 5198 8522