Fusion-Bonded Epoxy Coatings Awwa C213 Standard

Short Description:

Fusion-Bonded Epoxy Coatings and Linings for Steel Water Pipe and Fittings

This is an American Water Works Association(AWWA) standard. FBE coatings is mainly used on steel water pipes and fittings, for example the SSAW pipes, ERW pipes, LSAW pipes seamless pipes, elbows, tees, reducers etc. for the purpose of corrosion protection.

Fusion-bonded epoxy coatings are one part dry-powder thermosetting coatings that, when heat activated, produce a chemical reaction to the steel pipe surface while maintaining the performance of its properties. Since 1960 on, application have expanded to larger pipe sizes as internal and external coatings for gas, oil, water and wastewater applications.


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Physical properties of epoxy powder materials

Specific gravity at 23℃: minimum 1.2 and maximum 1.8
Sieve analysis: maximum 2.0
Gel time at 200 ℃: less than 120s

Abrasive blast cleaning

Bare steel surfaces shall be abrasive blast-cleaned in accordance with SSPC-SP10/NACE No. 2 unless otherwise specified by the purchaser. The blast anchor pattern or profile depth shall be 1.5 mil to 4.0 mil(38 µm to 102 µm) measured in accordance with ASTM D4417.

Preheating

Pipe that has been cleaned shall be preheated at temperature less than 260℃, the heat source shall not contaminate the pipe surface.

Thickness

The coating powder shall be applied to the preheated pipe at a uniform cure-film thickness of not less than 12 mils(305μm) on the exterior or interior. The maximum thickness shall not exceed a nominal 16 mils(406μm) unless recommended by the manufacturer or specified by the pruchaser.

Optional epoxy performance testing

The purchaser may specify additional testing to establish epoxy performance. The following test procedures, all of which shall be performed on production pipe test rings, may be specified:
1. Cross-section porosity.
2. Interface porosity.
3. Thermal analysis (DSC).
4. Permanent strain (bendability).
5. Water soak.
6. Impact.
7. Cathodic disbondment test.


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