Arcstruct PT 250 Internal Flow Efficiency Lining
Thin-film two-pack epoxy lining for the bore of steel line pipe and tube, applied to reduce internal surface roughness and so reduce pressure drop, and to protect the bore during storage and transport. Supplied in grades matched to gas transmission duty and to general process and structural tube.
Grade Arcstruct PT 250 | Range Industrial and Infrastructure Coatings | Technology Thin-film two-pack epoxy, oven or induction force cured
Technical Data Sheet
Arcstruct PT 250
Issue 2026.09
1. Product description
Thin-film two-pack epoxy lining for the bore of steel line pipe and tube, applied to reduce surface roughness and so reduce pressure drop, and to protect the internal surface during storage and transport. The film is smooth and hard rather than heavy, because hydraulic efficiency depends on wall roughness and not on thickness. Supplied in grades matched to gas transmission duty and to general process and structural tube.
2. Features
- Smooth, hard film that lowers wall roughness
- Thin film, since hydraulic efficiency depends on roughness rather than thickness
- Protects the bore during storage and transport
- Line applied by lance or spinning head and force cured
- Grades for gas transmission and for process and structural tube
3. Recommended uses
Internal lining of steel line pipe for gas transmission and of process and structural tube, where lower pressure drop and protection of the bore before commissioning are required.
Substrates. Internally blast-cleaned carbon steel pipe and tube
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | Thin-film two-pack epoxy, oven or induction force cured | Formulation |
| Appearance | Smooth, hard, uniform film, free of runs and dry spray | Visual bore inspection |
| Volume solids | 80 to 90 per cent | ISO 3233-1 |
| Density, mixed | 1.3 to 1.6 g/cm3 | ISO 2811-1 |
| Dry film thickness per coat | 50 to 100 micrometres, set by grade and specification | ISO 2808 |
| Surface roughness, cured lining | Low and uniform, assessed against the pipeline specification | Customer or supplier protocol, stylus profilometer |
| Adhesion, cross-cut | Classification 0 to 1 | ISO 2409 |
| Cure state after force cure | 50 to 100 MEK double rubs without softening | ASTM D5402 |
| Holiday detection, where specified | No detected discontinuity by low-voltage wet sponge test, the method suited to a thin film of this build | ASTM D5162 Method A, or ASTM G62 Method A where the pipeline specification names it |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Application method | Airless spray from a travelling lance or spinning head on a pipe coating line, with the pipe rotated for even distribution. |
| Surface preparation | Bore blast-cleaned to Sa 2.5 to ISO 8501-1, with the profile held towards the lower end of the medium grade to ISO 8503-2 so the thin film covers the peaks, and blast residues removed from the bore. |
| Mixing | Two-pack, proportioned at the stated ratio and used within the pot life. |
| Film thickness | 50 to 100 micrometres dry, verified to ISO 2808. |
| Cure | Force cured in an oven or by induction heating of the pipe wall, with the schedule set by wall temperature and line speed; cure confirmed by solvent rub before handling. |
| Inspection before despatch | Film thickness checked, bore inspected for runs and dry spray, and holiday detection carried out where the specification calls for it. |
Process. Airless spray from a travelling lance or spinning head on a pipe coating line, pipe rotated for even distribution. Two-pack, force cured in an oven or by induction heating of the pipe wall. Film thickness checked and the bore inspected for runs and dry spray before despatch, with holiday detection where the specification calls for it
6. Storage and handling
Store in the original closed containers under cover, dry and out of direct sun, at 5 to 35 degrees Celsius; stir the base to redisperse any settlement before mixing. Shelf life is stated on the label and the Certificate of Analysis. Handle and use the product in line with its Safety Data Sheet.
7. Safety and regulatory information
Read the Safety Data Sheet before use. Safety Data Sheets and regulatory declarations are issued by our technical centre against the product and batch supplied, so they are sent on request rather than published. Request a Safety Data Sheet or declaration.
This Technical Data Sheet is published for on-screen reference. The information is given in good faith from laboratory and application experience and describes typical values; it is not a specification and does not replace a trial on your own substrate and line. Arctic Materials may revise this sheet without notice. Issue 2026.09.
Technical Data Sheets on this site are for on-screen viewing. For a controlled copy, write to tech@arcticmaterials.com.
Other grades in this range
Need a Safety Data Sheet, a regulatory declaration or a grade specified to your line? Contact our technical centre.