Haihao Group has successfully produced and delivered a batch of ASTM A105 blind flanges for a valued client in Singapore. These flanges were manufactured to meet the stringent requirements of ANSI B16.5, NACE MR0175, and ISO 15156, ensuring compatibility with demanding industrial applications. F ...

Our Singapore client recently placed an order for a specialized product, a swivel flange. This product adheres to strict standards and requirements, ensuring top-tier performance and durability in high-pressure applications. Below are the detailed specifications of the product and a brief descri ...

Haihao Group, a recognized leader in the piping systems industry, continues to showcase its expertise in delivering tailor-made solutions for diverse client needs. Recently, we successfully completed the production of a custom batch of flanges for a valued client in Vietnam. These flanges, manuf ...

Haihao Group, a leading manufacturer of piping system components, is committed to delivering products that meet the most stringent material and performance requirements. For a recent project, a client requested ASME A182 F51 flanges with precise specifications to ensure reliability and durabilit ...

Haihao Group recently completed a customized order for a client, which included spiral wound gaskets (SPW) designed to meet rigorous industrial requirements. The product was meticulously manufactured and underwent strict quality inspection to ensure it met the client’s specifications and i ...

Recently, Haihao Group successfully completed a custom order for a Singaporean client involving specialized flanges and components for SOLAS International Shore Connection. This project exemplifies our unparalleled ability to deliver customized manufacturing solutions while meeting stringent cla ...

At Haihao Group, quality assurance is paramount. Recently, we conducted a comprehensive dimensional inspection of a batch of ASME B16.5 RF A350 GR.LF2CL.1 blind flanges, ensuring they met both international standards and our client’s specifications. Dimensional inspection plays a critical ...

Haihao Group recently completed production of a batch of API 6A RTJ A694 Gr. 60 PSL3 blind flanges for a distinguished client in the UAE. The order came with stringent quality requirements, demonstrating the client’s commitment to safety and performance in critical applications. Haihao Gro ...

At Haihao Group, we take pride in meeting the diverse requirements of our customers with high-quality products. Recently, a customer ordered a batch of EN 1092-1 RSt 37.2 RF weld neck flanges, which have been manufactured to exacting standards and are now ready for delivery. Product Specificatio ...

Flange sealing surfaces typically feature a ring of serrated threads, commonly referred to as a serrated gasket surface. This distinctive design plays a vital role in enhancing the sealing performance of flanges, particularly in high-pressure and high-temperature environments. The serrated surfa ...

Haihao Group is proud to announce the successful preparation and delivery of GOST 33259 weld neck flanges for a valued customer. These high-quality flanges are engineered to meet the demanding requirements of industrial applications, ensuring reliability and precision. Product Details Standards ...

Haihao Group has successfully completed an order of flat flanges for our Australian customer, crafted from premium Q235B material. These flanges were meticulously processed and treated to meet the specific requirements of the project. Product Specifications Material: Q235B, known for its excelle ...