Product Parameters
Material: High-quality malleable iron (malleable cast iron)
Surface Treatment: High-temperature blackening and rust-proofing process
Thread Standard: Metric/Imperial (e.g., G thread, NPT thread, etc., available upon request)
Size Range: DN8-DN50 (commonly 1/4" to 2")
Connection Type: External thread (compatible with internal thread fittings, internal thread valves, or equipment interfaces)
Pressure Rating: PN10-PN16
Operating Temperature: -20℃ to 120℃
Key Features
✅ Robust and Reliable – Malleable iron provides high strength and good toughness, resisting tension and torsion, ensuring a stable connection.
✅ Precision Threads – Precision machining on CNC lathes results in clear, regular threads, smooth screwing, and excellent sealing.
✅ Long-lasting Rust Prevention – Dense and uniform blackening layer effectively resists moisture and general corrosive media, extending service life.
✅ High Versatility – Standard thread type, perfectly compatible with various standard internal thread fittings and equipment. Easy Installation – Simple structure; installation can be completed quickly using common tools, saving time.
Applications
• Extension and diameter reduction connections of piping systems
• Interface connections for valves, instruments, and equipment
• Building water supply, drainage, and fire protection piping
• Industrial gas and liquid transmission pipelines
• Hydraulic and pneumatic circuits for mechanical equipment
Quality Commitment Our products are manufactured in strict accordance with national standards and undergo multiple inspection processes, including dimensional accuracy, thread check/check, and pressure strength testing, ensuring stable and reliable performance for every product. We are committed to providing high-quality piping connection solutions.
Installation Recommendations: During installation, it is recommended to wrap an appropriate amount of PTFE tape or apply sealant to the external thread end to enhance the sealing effect. When screwing in, align the threads, avoid misalignment, and tighten evenly to the appropriate torque.



