Plastics Identification:

You can only weld “like” materials. For example, Polypropylene (most car bumers) can only be welded with a Polypropylene welding rod. So it is very important to first identify the material to be welded. Today most plastics used in the manufature of modern vehicles are stamped with plastics identification codes, however, where this identification is not present, a welding test is required to ID the material to be welded. The quickest, safest and easiest way to do this is using a Techspan Rod Test Kit or RTK
Read more