We are excited to announce that Haihao Group, in collaboration with GANYEAH Group and FNS (NanJing) Surface Engineering Service Co., Ltd., will be participating in the 2025 NEFTEGAZ Exhibition in Moscow, Russia, from April 14th to 17th, 2025. As a leading event in the global oil and gas industry ...

Class 2500 Male Ring-Joint Facing Figure-8 Blanks are premium piping components engineered for ultra-high-pressure systems. They provide effective isolation and sealing in critical industrial applications, where safety and reliability are paramount. These blanks are designed to perform under ext ...

Class 1500 Male Ring-Joint Facing Figure-8 Blanks are advanced pipeline components engineered for high-pressure and high-temperature applications. These components are designed to provide exceptional sealing and isolation performance, ensuring reliability in critical industrial environments such ...

Class 900 Male Ring-Joint Facing Figure-8 Blanks are precision-engineered pipeline components designed for use in high-pressure systems. These blanks are crucial for isolating or regulating flow in pipelines, offering exceptional reliability and durability in industries such as oil and gas, petr ...

Class 600 Male Ring-Joint Facing Figure-8 Blanks are precision-engineered components designed for high-pressure and high-temperature pipeline systems. These figure-8 blanks serve as critical devices for isolating or regulating flow in pipelines, ensuring safe and efficient operations in demandin ...

The Class 300 Male Ring-Joint Facing Figure-8 Blanks are engineered to meet the demanding needs of high-pressure piping systems. Designed in compliance with ASME B16.48 standard, these figure-8 blanks play a critical role in isolating or controlling the flow in pipelines, ensuring safe and effic ...

The Class 150 Male Ring-Joint Facing Figure-8 Blanks are precision-engineered components designed for use in high-pressure piping systems. These figure-8 blanks, often referred to as spectacle blinds, serve as essential tools for isolating or shutting off sections of pipelines during maintenance ...

Class 1500 Female Ring-Joint Facing Figure-8 Blanks are specialized components designed to provide reliable flow management in high-pressure pipeline systems. These figure-8 blanks, also referred to as spectacle blinds, are essential in industries where operational safety and efficiency are para ...

Class 1500 Female Ring-Joint Facing Figure-8 Blanks are specialized components used in high-pressure pipeline systems, typically for sealing purposes in conjunction with flanges. These blanks feature a Ring-Joint facing and are designed to provide a tight, leak-proof seal, making them suitable f ...

Class 900 Female Ring-Joint Facing Figure-8 Blanks are essential components in high-pressure pipeline systems, designed to provide reliable sealing and isolation when installed with Class 900 Ring-Joint (RJ) flanges. These blanks are crucial in various industrial applications, particularly where ...

Class 600 Female Ring-Joint Facing Figure-8 blanks are specialized components designed for use with Class 600 Ring-Joint (RJ) flanges. These blanks are used primarily to isolate sections of piping systems, particularly in high-pressure environments where sealing is critical. The Figure-8 shape o ...

Class 300 Female Ring-Joint Facing Figure-8 blanks are specially designed components used to close off or isolate sections of piping systems. These blanks are typically used with Class 300 Ring-Joint (RJ) flanges, which are commonly found in medium-to-high pressure systems (up to 300 psi). The F ...