Ask X3What does 49 CFR 178.517 (Standards for plastic boxes) require?
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According to 49 CFR 178.517, plastic boxes must meet specific identification codes and construction requirements:
* Identification Codes:
* 4H1 represents an expanded plastic box (maximum net mass of 60 kg / 132 pounds).
* 4H2 represents a solid plastic box (maximum net mass of 400 kg / 132 pounds).
* General Construction:
* Boxes must be made of suitable plastic material, have adequate strength for their capacity and intended use, and resist aging and degradation from the contained substance or ultra-violet (UV) radiation.
* Other additives (besides UV protection) are allowed if they do not adversely affect the box material.
* Expanded Plastic Boxes (4H1):
* Must consist of two molded parts (a bottom section with cavities for inner receptacles and an interlocking top section) that fit inner receptacles snugly.
* The inner receptacle's closure cap must not touch the inside of the top section.
* For transport, they must be closed with a weather-resistant self-adhesive tape (with compatible adhesive and sufficient tensile strength) or an equally effective closing device.
* Solid Plastic Boxes (4H2):
* Must include compatible carbon black, pigments, or inhibitors for UV protection if required.
* Must feature closure devices made of suitable, strong material to prevent unintentional opening.