Quality and safety are the core production principles of Qingdao Evergreen Import and Export Co., Ltd. We adhere to standardized safe LPG cylinder production workflows and implement a rigorous multi-round LPG cylinder quality inspection system for all finished gas equipment, eliminating potential safety hazards for global end users.
The full-process quality control starts with raw material component detection to ensure all steel plates and brass accessories meet international pressure vessel QC standard. Semi-finished cylinder bodies undergo ultrasonic welding seam detection and high pressure gas tank testing with 1.5 times rated working pressure, effectively avoiding hidden cracks and pressure resistance failures.
Every certified propane valve will complete a 5-minute constant-pressure gas valve leakage test. Any tiny air bubble leakage will lead to direct product scrapping, ensuring 100% airtight performance of all valve products. After surface painting and overall assembly, all finished products will pass simulated aging tests to adapt to complex global usage environments.
Each cylinder and valve is equipped with an independent traceability code, realizing full-lifecycle quality tracking. Third-party institutions including SGS and BV are welcome to conduct on-site factory audits and random inspections. Strict quality control greatly reduces product failure rates, providing risk-free and high-stability gas equipment for global distributors and energy enterprises.
