Model Building Guides
Evergreen Styrene Tube #230: 5/16-Inch Sizing & Use Guide

Product details and price checked October 18, 2026. Evergreen Scale Models styrene tube #230 (SKU EVG230) is listed as three 14-inch tubes with a nominal 5/16-inch outside diameter. Use the item number to identify the product, then check the dimensions and package details against your model before ordering. The current listing is $7.18; stock and fulfillment can change.
Evergreen styrene tube #230 specifications
| Detail | Current listing |
|---|---|
| Manufacturer / item | Evergreen Scale Models #230 |
| Store SKU | EVG230 |
| Material / profile | Styrene; hollow round tube |
| Outside diameter | 5/16 inch (listing also states .312 inch) |
| Length | 14 inches per tube |
| Package quantity | Three tubes |
| Inside diameter / wall thickness | Not stated in the current product record |
| Current listed price | $7.18 before shipping and tax |
Note the listing’s two rounded outside-diameter expressions: 5/16 inch equals 0.3125 inch, while .312 inch is slightly smaller. Treat these as nominal listing dimensions, not a precision tolerance. If another part must fit inside or around the tube, measure the material you receive or confirm the current manufacturer specification before designing a close fit.
Check fit before choosing tube #230
Start with the project drawing or the part that the tube must meet. Confirm whether the required measurement is outside diameter, inside diameter, wall thickness or length; they describe different dimensions. The store record does not provide the inside diameter, wall thickness, tolerance or a confirmed telescoping fit with another tube or rod. Do not infer those details from the outside diameter alone.
For an HO-scale project, compare the actual profile and scale appearance against the reference. A 5/16-inch tube may suit a large hollow detail, but it is not automatically an HO-scale dimension or a structural support. Dry-fit a short sample before cutting several matching pieces.
Cutting and finishing hollow styrene
- Mark the required length around the tube so the cut stays square.
- Support the tube while cutting to reduce crushing or splitting.
- Use a suitable fine saw or hobby cutting method and follow its safety instructions.
- Square and lightly smooth the end, then test-fit it before repeating the cut.
- Use an adhesive and finish labeled as compatible with styrene; test on scrap first.
The listing is for styrene tube material. It does not include adhesive, paint, primer, tools or project-specific fittings. This hobby stock is not a pressure-rated or safety-rated tube; do not use it for plumbing, fuel, compressed air or load-bearing applications.
Tube #230 compared with Evergreen strip stock
- Evergreen tube #230 is the listed hollow, round 5/16-inch OD profile.
- Evergreen HO 2×12 strips #8212 are listed as flat strip stock; check the package for the exact dimensions and quantity.
- Evergreen HO 4×12 strips #8412 are another flat profile. Confirm dimensions and intended scale from the live listing before substituting.
Browse model-building supplies to compare styrene, adhesives and finishing materials. Product names identify the listings; check the live product pages for current price, availability and package details.
Frequently asked questions
What size is Evergreen styrene tube #230?
The listing gives a nominal 5/16-inch outside diameter (also written as .312 inch), a 14-inch length per tube and three tubes. It does not state the inside diameter or wall thickness.
Will another tube or rod fit inside #230?
The current record does not confirm a matching inside diameter or telescoping fit. Check manufacturer specifications or measure the actual stock before relying on a close fit.
Is this tube suitable for an HO-scale model?
It may suit a particular project, but the 5/16-inch outside diameter is a physical measurement, not an HO-scale dimension. Compare the model’s reference and actual fit.
What comes in the package?
The product title lists three 14-inch styrene tubes. Glue, paint, tools and fittings are not included.
What does Evergreen #230 cost?
The current store listing is $7.18 before shipping and applicable tax. Check the listing for current availability and final checkout terms.
Review Evergreen tube #230
View Evergreen Scale Models styrene tube #230 · Browse model-building supplies
Product dimensions, package quantity and price were checked October 18, 2026. The live product listing and manufacturer specifications are the reference for current details; verify close-fit measurements before cutting or ordering.

