How to choose between 4140 and 4130? Analysis of Composition, Performance, and Welding Processing Depth
4130 and 4140 are both highly representative heat treatable low-alloy steels (HTLA) in engineering, with similar composi...
The release date of the new version of ISO 9001:2026 standard has been confirmed
According to the latest news from the International Organization for Standardization (ISO), the final draft internationa...
TongLi received its API 6A certification
On July 14, 2026, Tongli obtained the API 6A certificate issued by the American Petroleum Institute (API)!
Strengthen the safety defense line for oil and gas extraction
No need to salvage the main body during maintenance, which greatly reduces operation and maintenance costs. The supporti...
Fracturing equipment and high-pressure fittings | Our self-developed fracturing equipment has been put into operation, creating an efficient reservoir transformation plan
We can provide integrated fracturing solutions covering fracturing pump units, manifolds, wellhead connectors as well as...
API 6A Valves | Full Series of API 6A High Pressure Valves
The products cover all pressure ratings from Class 150 to 2000. Adopting special stainless steel and wear-resistant seal...
Wellhead equipment and oil (gas) production trees | Batch delivery of ultra-high pressure gas production trees to assist in efficient development of deep gas fields
Mass production and smooth delivery of extra-high pressure gas wellhead assemblies and Christmas trees have been complet...
The CEO of NOV (National Oilwell Varco) and relevant leaders from Singapore's quality department visited our company for research and investigation, jointly exploring new opportunities for deep cooperation
On May 20, 2025, the CEO of NOV (National Oilwell Varco) and relevant leaders from Singapore's quality department visite...