Product Specifications: DN65 (D75), DN80 (D90), DN100 (D110), DN100 (D125), DN15...
Product Specifications: DN15 (D20), DN20 (D25), DN25 (D32), DN32 (D40), DN40 (D5...
A 1-inch PVC screw plug costs less than a coffee, yet the wrong one can split the threaded boss on a filter housing and take a line down for a shift. On a dosing skid or a water-treatment header, that small threaded part is often the last thing specified and the first thing to leak. The specification sheet matters far...
View MoreA 110 mm PVC flange on a brine line starts weeping three weeks after commissioning. The bolts feel tight, the pipe is sound, and the gasket matched the size on the drawing. In most cases like this, the gasket itself is not faulty — the selection is. An EPDM pad went onto a stream carrying oil mist, a full-face gasket ...
View MoreWhen a plastic flange weeps at the bolt circle, the flange body is usually the last component to blame. On most PPH, PPN and PVDF lines the leak starts with the gasket, the bolt load or the alignment of the two faces, not with the moulded part. That order of causes matters, because it tells you what to specify before ...
View MoreWhat are the main materials of PPN pipes?
1. Modified Polypropylene (PP): PPN pipes use polypropylene (PP) as the matrix, which is β-modified or copolymerized to give it higher temperature resistance, chemical corrosion resistance, and aging resistance.
2. High Transparency and Low Water Absorption: PPN material has an extremely low water absorption rate (≈0.01%), and hardly expands in aquatic environments, making it suitable for industries highly sensitive to moisture, such as cleanrooms, pharmaceuticals, and semiconductors.
3. Excellent Mechanical Strength: The modified PPN pipe wall is dense, significantly improving impact strength and pressure resistance, and can operate stably in a wide temperature range of -10℃ to +100℃.
What are the differences between PPN pipes and ordinary PP pipes (PPH)?
1. Compositional Differences: PPN pipes use polypropylene raw materials directly, while PPH pipes are β-modified from ordinary PP to form a more uniform and delicate β-crystalline structure.
2. Performance Comparison:
Chemical Resistance: PPN performs better in strong acid and alkali environments, exhibiting stronger corrosion resistance; while PPH also possesses good chemical resistance, it is slightly inferior.
High Temperature Resistance: PPN can be used continuously at temperatures above 100℃, suitable for high-temperature process pipelines; the maximum operating temperature of PPH is generally around 90℃.
Abrasion and Aging Resistance: PPN pipes exhibit superior abrasion resistance and anti-aging properties, resulting in a longer service life, making them particularly suitable for harsh conditions such as chemical and pharmaceutical industries.
3. Application Scenarios: PPN is more inclined towards high-end photovoltaic, semiconductor, chemical, and pharmaceutical fields where extremely high material purity and temperature resistance are required; PPH is commonly used in general industrial pipelines, water supply and drainage, and medium- and low-pressure transmission systems.
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