What raw materials are used to make screw-in protective plugs

2026-06-10

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1. Carbon Steel & Alloy Steel

  • Carbon Steel (ASTM A105): High cost-effectiveness and excellent strength. Ideal for municipal water supply and low-pressure steam pipelines.
  • Alloy Steel (e.g., F91): Superior resistance to high temperatures and high pressures. Ensures structural integrity in power generation and petroleum refining.
  • Provides reliable sealing in demanding industrial applications.

2. Stainless Steel Variants

  • Standard Grades (304, 316L): Exceptional corrosion resistance against acids, alkalis, and saline environments.
  • Specialized Alloys (Duplex F51/F53, Inconel 625, Hastelloy C276): Prevent material degradation in highly corrosive or specialized chemical processing scenarios.
  • Long‑term performance in aggressive media.

3. Advanced Polymers & Plastics

  • Engineering Plastics (Polyamide PA 6): Outstanding IP68 waterproofing and resistance to harsh environmental conditions.
  • Aerospace‑Grade Composites: Lightweight, manufactured to strict dimensional standards for aerospace fluid systems.
  • Ensures precise fit without adding unnecessary weight to aircraft structures.

4. Specialized Safety Alloys

  • Low‑Melting Eutectic Alloys (Bismuth, Indium, Tin): Used in Pressure Relief Vent / fusible plug designs.
  • Precise Thermal Response: Engineered melting points (e.g., 73±2°C). Remains solid during normal operation, melts rapidly under extreme heat or fire.
  • Instantly releases internal pressure to prevent catastrophic explosions.