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 ...

Recently, Haihao Group produced a batch of ASME B16.36 orifice flanges for Singapore customers. In industrial piping systems, choosing the right flange type is crucial for system performance, safety and flow measurement accuracy. The most common one is the ASME B16.5 flange, which is widely used ...

In industrial pipeline systems, spectacle blinds play a vital role in system isolation for maintenance, testing, or safety shutdowns. When manufactured from ASTM A240 Grade 316/316L stainless steel, these components offer excellent corrosion resistance, mechanical durability, and compatibility w ...

In 2025, Haihao Group successfully completed the production and quality inspection of stainless steel spectacle blinds for a valued client in Singapore. These critical flow-control components were manufactured from ASTM A240 Grade 316/316L stainless steel and in full compliance with the ASME B16 ...

At Haihao Group, we understand the precision demands of global engineering procurement teams. When Singapore’s leading energy infrastructure contractor approached us for ASME B16.48 ASTM A240 GR. 316 spectacle blind flanges, our engineering team prioritized material integrity, dimensional ...

Haihao Group specializes in manufacturing industrial flanges that adhere to the most rigorous international benchmarks, with our ASME B16.5 A105N RF weld neck flanges standing as a testament to our dedication to precision engineering. These flanges are engineered to deliver exceptional performan ...