Comprehensive quality inspection and analysis ensure that every product leaves the factory up to standard.
Analysis of the content of various elements in raw materials
Conduct precise pressure testing on products
Analysis of the metallographic structure of heat-treated raw material tissues
Anti-rust analysis of product surface treatment, adapted to the testing needs of different types of hardware parts, and provide exclusive solutions
Precise detection of thread strength and thread torque of products
Precise hardness measurement and detection of products
From raw materials to finished product delivery, every plug undergoes 12 inspection procedures to ensure zero quality defects
Inspect the composition and hardness of copper/stainless steel/carbon steel materials to ensure the base material meets plug usage standards
Real-time inspection of thread machining accuracy and dimensional tolerance to eliminate machining errors
Inspect the thickness and adhesion of galvanizing/chrome plating/passivation layers to ensure corrosion resistance
Salt spray test + sealing test + full dimensional inspection, only qualified products can be delivered
All plug inspection items are carried out in accordance with the following standards to ensure reliable product quality
304/316 material, 10000 hours salt spray test with no corrosion, suitable for marine/chemical environments
35# carbon steel + electro-galvanized treatment, 96 hours salt spray test, high cost performance
35# carbon steel + electro-galvanized nickel alloy treatment, 200 hours salt spray test, high cost performance
