Introducing our high-quality pipe and flange combination: The perfect solution for your project

At Haihao Group, we are dedicated to providing our customers with top-of-the-line products that meet their specific requirements. Today, we are excited to introduce a product that combines superior base pipe and flange components, offering exceptional performance and durability for various applications.

Prefabricated products

Prefabricated products

Base Pipe: Strength and Reliability

Our base pipe is manufactured to meet the highest industry standards. With a DN150 size and ASTM A53 specification, it guarantees excellent strength and reliability for your project. The SCH40 thickness ensures the pipe can withstand varying pressure levels while maintaining optimal flow capacity. What sets our base pipe apart is its galvanized coating with a thickness of 560g, providing superior corrosion resistance, even in harsh environments. This galvanization process adds an extra layer of protection, ensuring the longevity of the pipe and reducing maintenance needs.

Flange: Versatility and Convenience

Paired with our exceptional base pipe is a PN25 size flange that offers versatility and convenience for your installation. What makes our flange stand out is its plastic coating, applied after the welding process with the base pipe. This innovative approach provides several advantages. Firstly, the plastic coating acts as an additional protective barrier, safeguarding the flange against corrosion and external elements. Secondly, it enhances the flange’s aesthetics, making it more visually appealing. Lastly, we have taken it a step further by incorporating a cable groove on the flange, allowing for easy cable management and reducing clutter during installation.

Uncompromising Quality and Service

At Haihao Group, we prioritize quality in every aspect of our products. Our base pipe and flange combination undergoes rigorous testing to ensure they meet the highest standards of performance, durability, and safety. We utilize advanced manufacturing processes, cutting-edge technology, and stringent quality control measures to deliver products that exceed customer expectations.

Not only do we offer exceptional products, but we also provide comprehensive customer support throughout your project. Our team of experts is ready to assist you with technical advice, product selection, and any other inquiries you may have. We are committed to delivering outstanding service that matches the quality of our products.

Prefabricated products

Prefabricated products


When it comes to your project, trust Haihao Group to provide the perfect combination of base pipe and flange. Our DN150 ASTM A53 SCH40 base pipe with galvanized coating and our PN25 flange with plastic coating and cable groove offer unmatched performance, reliability, and convenience. Experience the difference our high-quality products can make in your project’s success.

Contact us today to discuss your specific requirements and discover how our base pipe and flange combination can elevate your project to new heights. At Haihao Group, we are here to deliver excellence at every step of the way.