1. Raw Material Inspection:All raw materials for 718 threaded outlets are strictly inspected before mass production. The factory verifies chemical composition, mechanical properties and material certificates to ensure compliance with MSS SP 97 and national pressure pipe standards, ensuring all raw materials meet high-pressure forging requirements.
2. Precision Cutting and Blanking:
Qualified raw steel materials are precisely cut into standard blanks according to product specifications. Accurate size and weight control are carried out for each blank to ensure consistent forging quality and provide stable foundation for subsequent integral forming and thread processing.
3. High Temperature Integral Forging:
The prepared blanks are heated to professional forging temperature and integrally forged by hydraulic forging machines. The integral forging process forms the complete arc base and branch body, achieving dense internal metal structure, high strength and good overall toughness.
4. Standard Heat Treatment:
After forging forming, all semi-finished threadolet products undergo normalized and tempered heat treatment. This procedure eliminates internal forging stress, stabilizes metal structure, and improves hardness and pressure resistance to adapt to various industrial working conditions.
5. High-Precision Thread Machining:
Professional CNC threading equipment is used for precision machining of internal NPT threads and outer arc surfaces. All thread pitch, depth and tolerance strictly follow industry standards, ensuring smooth assembly, tight sealing and perfect matching with standard threaded pipe fittings.
6. Strict Non-Destructive Testing:
Every finished 718 threaded outlet undergoes full NDT inspection, including ultrasonic testing and surface flaw detection. All internal and surface defects such as cracks, inclusions and porosity are completely eliminated to ensure 100% qualified safety performance.
7. Surface Treatment and Standard Packaging:
Qualified products are polished, deburred and anti-corrosion treated to remove oxidation layers and machining residues. Finally, professional export packaging is adopted with clear marking of specifications, material and pressure grade, suitable for long-distance transportation and industrial engineering application.