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  2. Plastic welding - Wikipedia

    en.wikipedia.org/wiki/Plastic_welding

    The speed tip heats the rod and the substrate, while at the same time it presses the molten weld rod into position. A bead of softened plastic is laid into the joint, and the parts and weld rod fuse. With some types of plastic such as polypropylene, the melted welding rod must be "mixed" with the semi-melted base material being fabricated or ...

  3. Pipe dope - Wikipedia

    en.wikipedia.org/wiki/Pipe_dope

    Petroleum-based pipe dope is not intended for use on threaded PVC, CPVC or ABS pipe and fittings since it will deteriorate the plastic. Builders in the US are expected to use thread compounds that meet ASTM F2331 - Standard Test Method for Determining Chemical Compatibility of Thread Sealants with Thermoplastic Threaded Pipe and Fittings Materials or thread seal tape on PVC, CPVC and ABS threads.

  4. Adhesive bonding - Wikipedia

    en.wikipedia.org/wiki/Adhesive_bonding

    Gluing forms only part of the occupational training in a few occupations, and in this case only the bonding processes relevant to the respective profession are usually taught. As a result, there was a need for professional training for personnel involved in the development, production and repair of glued products.

  5. Wiped joint - Wikipedia

    en.wikipedia.org/wiki/Wiped_joint

    Wiped joints were used for centuries to install water plumbing and similar joints can be seen in Roman plumbing. [3] As the wiping technique allowed a great deal of on-site flexibility for the style and dimensions of the work produced, this meant that plumbers needed few parts other than pipe, lead sheet and solder.

  6. Solvent bonding - Wikipedia

    en.wikipedia.org/wiki/Solvent_bonding

    An epoxy may be used for mounting, but can lead to failure in the epoxy/polymer interface instead of in the bonded joint. [2] The most common method for testing solvent bonds is the tensile shear test using a lap joint configuration. Specimens are tested in shear to failure at a given overlap cross section via tensile loading.

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    www.aol.com/7-dow-jones-dividend-stocks...

    The Dow Jones Industrial Average is chock-full of industry-leading blue chip stocks-- many of which pay dividends.But the Dow tends to underperform the S&P 500 during growth-driven rallies when ...

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