Products

Class 150 socket weld flange China manufacturer Longan delivers 28J/mm heat input, 6MPa assembly stress, ≤10⁻¹¹ helium leakage. Factory-direct quality with ASTM G28 A zero failure. Nano-sealing, self-cleaning surface. For oil/gas, semiconductor fabs, fusion reactors. ISO/CE certified.

Longan China manufacturer flat face flange is a standard connection component used in industrial pipeline systems, mainly for the connection and sealing between pipelines, valves and related equipment. The product is widely used in oil and gas transmission, petrochemical processing, power engineering and marine engineering industries, and is suitable for basic structural connection requirements of various industrial pipeline systems.

Class 300 Threaded Flange from Longan is supplied for stronger sealing stability, higher pressure resistance, and improved durability under vibration and thermal cycling conditions. Longan provides factory-direct pricing, API-certified anti-vibration technology, flexible customization, and strict in-house quality control for global industrial buyers.

High pressure socket flange China manufacturer Longan delivers ≤10⁻¹¹ helium leakage, 92% lower assembly stress. Factory-direct quality with full ERP traceability. Zero heat damage welding, nano-sealing surface. For extreme pipelines (‑253°C to fusion reactors). Certifications: CE, ISO 9001/14001.

Class 150 Threaded Flange with Longan made in China provides standard threaded flange solutions for water treatment, HVAC, municipal pipelines, and light industrial systems. Manufactured with precision-machined threads and stable sealing performance, this flange supports convenient installation without welding in many low- and medium-pressure applications.

Longan forged socket weld flange China manufacturer and supplier delivers high quality pipeline sealing solutions for oil & gas, semiconductor, and energy industries. Featuring low heat impact welding, ultra-low helium leakage, and precision-machined sealing surfaces, it supports stable operation under high pressure, vibration, and extreme temperatures.