Standard Practice for Evaluating the Quality of Molded Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings by the Heat Reversion Technique

Importancia y uso:

3.1 This practice is applicable to distinguish between properly and improperly molded PVC plastic pipe fittings. It can be used to:

3.1.1 Determine whether cold slugs or unfused areas are present (Note 2),

3.1.2 Determine the amount of molded-in stress produced by the molding process (Note 3),

3.1.3 Reveal contamination, and

3.1.4 Show the quality of the weld line.

Note 2: A cold slug is a piece of material that enters the mold at a significantly lower temperature than the rest of the mass.

Note 3: A stress-free part will generally have better properties and higher strength than those with a high degree of stress. Stress-free parts will generally react better when exposed to chemicals.

Subcomité:

F17.40

Referida por:

F1336-20

Volúmen:

08.04

Número ICS:

23.040.20 (Plastic pipes), 23.040.45 (Plastic fittings)

Palabras clave:

evaluating; fittings; plastic; PVC; quality;