Engineered for extreme conditions, trusted by global infrastructure projects.
In the modern landscape of oil and gas transportation, the demand for leak-free, maintenance-free infrastructure has never been higher. Bolted-body valves, while traditional, present potential leak paths at body joints. The Fully Welded Ball Valve eliminates these risks by utilizing a unitary body construction. Through advanced robotic submerged arc welding and high-precision CNC machining, Chinese factories are now producing valves that redefine longevity in buried gas pipeline applications.
The manufacturing process at top-tier SLVCN factories involves rigorous non-destructive testing (NDT), including Ultrasonic Testing (UT) and Magnetic Particle Inspection (MPI) of the weld seams. This ensures that the weld strength exceeds the strength of the base forged material (ASTM A105, LF2, or F316L), providing an unparalleled safety factor for high-pressure Class 600, 900, and 1500 systems.
No bolted joints mean no potential leak paths to the environment, ideal for hazardous media.
Unitary body construction withstands high pipeline bending moments and ground shifting.
Maintenance-free design intended for direct burial without the need for concrete vaults.
Procuring fully welded ball valves from premium Chinese factories like SLVCN offers a unique blend of scalability, engineering precision, and cost-efficiency. The Chinese valve industry has transitioned from high-volume production to high-spec engineering, adhering to international standards such as API 6D, API 607 (Fire Safe), and ISO 15848-1 (Fugitive Emissions).
For international EPC (Engineering, Procurement, and Construction) companies, compliance is non-negotiable. Our manufacturing processes include:
As the world pivots toward the energy transition, fully welded ball valves are being optimized for Hydrogen service. This requires specialized material selection to prevent hydrogen embrittlement and enhanced sealing technology to contain the smallest molecules. Our R&D department is currently integrating these advanced requirements into our Class 900 fully welded trunnion-mounted gas ball valves.
Fully welded valves are essential in urban heating systems (Eastern Europe/Nordics) where they are buried directly under streets, minimizing traffic disruption for maintenance.
Used in major transmission lines across the Middle East and Central Asia, handling high-pressure natural gas with absolute sealing integrity across thousands of kilometers.
For critical isolation in refineries where fire safety (API 607) and fugitive emission control are required to protect workers and the environment.
Precision manufactured to ISO and API standards for high-stakes industrial use.
As a leading supplier of Fully Welded Ball Valves, SLVCN remains dedicated to pushing the boundaries of valve technology. Our 30-year history is a testament to our reliability. From the high-pressure gas fields of the Middle East to the cryogenic LNG terminals of Europe, our valves provide the safety and integrity required for the world's most critical infrastructure.
Contact our engineering team today for full technical specifications and project quotations.
Shoulong Valve