Re: 1969 camaro fuel tank stencil
It's usually a ASTM number, material size & grade of material, and a heat number. They were probably painted every 8 ft or so depending on where they were heading or if the end user required it more often depending on the size of there dies and material usage. All of our material is marked one way or another, I require it for PMI and a must for matching certs for ASME code requirements.
BIG
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