Are enamel containers and glass-lined containers the same thing?

Enameled containers are made by firing after glazing, while glass-lined containers are created by layering fiber cloth and resin together.

The Tang glass manufacturing process is similar to that of enamel: glaze powder is sprayed first, then the material is fired, and this process is repeated multiple times...

It’s just a different name; it should refer to the same thing. Enameled equipment and glass-lined equipment refer to devices in which a thin layer of enamel is sintered onto a metal substrate at a certain temperature. The matrix material is pressure-resistant, while the enamel is corrosion-resistant.

Points to note for welding procedure qualification include: 1. Assignment of welding procedure qualification: The construction unit shall carry out the welding procedure qualification internally through its own efforts; it is not allowed to delegate this critical task to another entity. 2. Prepare the pre-welding procedure: It shall be developed by technicians with relevant professional knowledge and sufficient experimental experience; copying or using welding procedure qualification data from other organizations is not allowed. 3. Welding test pieces: Welded by skilled welders from the same organization using the organization’s welding equipment, this approach not only demonstrates the welding skills and equipment quality of the welding unit but also eliminates the influence of the welders’ individual skills. 4. Test piece inspection: The inspection items for weld evaluation test pieces shall include at least: visual inspection, non-destructive testing, mechanical property tests, and bending tests. 5. Issuance of report: Records should be kept throughout the welding procedure qualification process, and a welding procedure qualification report should be prepared upon completion. This report must be reviewed by the welding technician in charge.