GPK's company-wide effort to manufacturing superior products
GPK has a multi-faceted approach to quality control:
We start with high quality raw materials, including our proprietary resin blend for our molded products.
Quality is a team effort. Eighty percent of our employees have visual inspection responsibilities during the manufacturing process. Knowledgeable shift managers spearhead this frontline quality control, each having an average of 5-10 years of experience and some with 35 years of service.
GPK has been manufacturing PVC fittings for nearly 50 years. Our production steps have been fine-tuned through trial and testing. The defined standards we have in place for fabrication and molding help ensure the quality of our finished products.
- We regularly test our mainline Wyes, Tees and Tee Wyes in the following areas:
Heat Reversion Testing
A fitting is heated, then cut and a cross section is inspected for wall delamination.
With forces on the product, fitting integrity and deflection are evaluated.
We test to ensure performance of the fittings under low-pressure (10.8 PSI) applications.
Using force against the branch of a fitting, we examine the point of bending or cracking.