Haihao Group has successfully completed the production and shipment of a batch of RTJ WN flanges for a critical industrial application in the United Arab Emirates. Manufactured from ASTM B564 UNS N06625, a high-performance nickel-based alloy, these flanges were supplied in sizes ½” and 2&# ...

Haihao Group recently shipped a batch of ASME B16.5 A350 LF2 CL1 weld neck flanges to Indonesia — built for high-pressure, low-temperature service with uncompromising quality. Our 10″ 900# SCH120 weld neck flanges are forged from certified A350 LF2 CL1 material, ensuring mechanical strengt ...

Haihao Group recently completed the manufacturing and shipment of a full range of ASME B16.5 A105N carbon steel flanges for a customer based in Singapore. The shipment included a variety of flange types—slip on (SO RF), weld neck (WN RF), and blind (BL RF)—covering pressure ratings of 150# and 3 ...

Over the past month, Haihao Group completed a specialized shipment of RTJ paddle blank flanges, paddle spacers, and figure 8 blanks for a major Singapore process-plant project. Our team delivered seven unique items—ranging from 2-inch inserts to 12-inch blanks—each engineered to handle pressures ...

Germany, as one of Europe’s most advanced manufacturing hubs, is renowned for its rigorous standards in engineering and industrial systems. For suppliers in the piping component industry, delivering high-quality, standard-compliant, and customized products is the key to earning trust in su ...

In today’s industrial landscape, the reliability of pipeline connections is paramount—especially in critical systems operating under high temperature and pressure. Haihao Group, a leading global supplier of pipe fittings, flanges, and gasket solutions, has once again demonstrated its manuf ...

In industrial piping systems, it is generally recommended to avoid mixing different metals—especially stainless steel and carbon steel—due to the risk of galvanic corrosion, thermal stress mismatch, and mechanical incompatibility. However, in many practical scenarios, especially in petrochemical ...

At Haihao Group, we understand that not every piping order follows a predictable schedule. In critical industrial projects, unplanned shutdowns or urgent replacements often require fast production and reliable delivery. Recently, our team was tasked with an expedited order from a client in Singa ...

In demanding industrial environments, the longevity and reliable performance of pipeline components are paramount. While every connection must be robust, specific applications call for enhanced protection and meticulous precision. At Haihao Group, we recently completed a detailed order for a val ...

A few days ago, we wrapped up a small but very specific job for a client in Russia—16-inch weld neck flanges, made from ASTM A182 F316L stainless steel, with some non-standard requirements that needed a bit more attention than usual. The client is working on a pipeline section that uses 406.4 mm ...

In the intricate world of industrial pipelines, the integrity of every connection is paramount for operational safety and efficiency. Flanges serve as crucial connecting points, ensuring leak-proof seals and structural stability under immense pressure and varying temperatures. Haihao Group, a gl ...

In the world of piping and pressure vessel systems, ASME flange standards play a critical role in ensuring safety, reliability, and global compatibility. Whether used in oil & gas, chemical processing, power generation, or water treatment, flanges serve as essential components for connecting ...