Manufacturing Process And Quality Control Of Pressure Pipeline Components - Polyethylene (PE) Pipe Fittings

1. The manufacturing process of polyethylene pipe fittings:

Polyethylene (PE) pipe fittings are produced by injection molding. Injection molding process refers to the process of creating semi-finished products of a certain shape by applying pressure, injection, cooling, and disengagement to the molten raw materials. The production process of polyethylene pipe fittings: PE raw materials → transportation and loading → hopper storage → feeding → heating and melting → extrusion and injection → cooling and shaping → mold opening → inspection → storage. Electrofusion pipe fittings involve electric heating wire wiring. The one-time injection molding production process: inner sleeve injection → insertion of electric heating wire → finished product injection → final inspection → packaging → storage. The post-wiring manufacturing process of electrofusion pipe fittings: blank injection → inspection → blank storage/outbound → finished product wiring → final inspection → packaging → storage

2.The main inspection items for polyethylene pipe fittings include: for gas-usage buried polyethylene pipe fittings, the main inspection items cover appearance, dimensions (wall thickness, outer diameter), elongation at break, static hydraulic strength test, oxidation induction time, melt mass flow rate, etc.