Isobaric compression molding PTFE pipe molding process, isostatic compression molding, sometimes called hydroforming, is mainly suitable for the compression of products with complex shapes. It is more economical and effective for large-area products. It can directly press the desired shape without the need or Very little machining is required. Isobaric PTFE pipe molding can be divided into the following three types: 1. Internal hydraulic pressure molding PTFE pipe, also known as dry bag method, is suitable for processing PTFE beakers, storage tanks, sleeves and hemispherical shell products. 2. The external hydraulic pressure moulding of PTFE pipes has become the wet bag method, which is suitable for processing thin-walled pipes with relatively large long diameters and large blanks for turning plates. 3. Internal and external hydraulic pressure moulding of PTFE pipes is suitable for processing products lined with metal structural parts, such as metal-lined PTFE-lined tee, PTFE-lined four-way, PTFE-lined elbow, and PTFE-lined pipe fittings And lined with PTFE valve, lined with PTFE pipeline, etc.