Haihao Group supplies JIS B2220 S31803 SO flanges to Singapore customer

Haihao Group recently signed a supply contract with a Singapore customer for a batch of JIS B2220 S31803 slip on (SO) flange. The order includes flanges in various sizes, such as NB 1100, NB 900, and NB 700. This order highlights Haihao Group’s expertise in producing high-quality flanges that meet stringent international standards.

The JIS B2220 S31803 SO flange is made from duplex stainless steel S31803, known for its superior corrosion resistance and high mechanical strength. The customer requested a material specification with a PREN (Pitting Resistance Equivalent Number) ≥ 35, ensuring enhanced resistance to pitting and crevice corrosion, especially in harsh environments. The high PREN value is critical for applications where the JIS B2220 S31803 SO flange will be exposed to corrosive elements such as chloride-rich environments.

JIS B2220 S31803 SO flanges

Additionally, the customer required detailed testing for the JIS B2220 S31803 SO flange, including ferrite content, metallographic structure analysis, hardness testing, and pitting corrosion evaluation. To ensure the durability and safety of the flanges, non-destructive testing (NDT) and low-temperature impact testing at -46°C were also specified. The minimum impact energy required at this temperature was set at 35J, emphasizing the toughness of the JIS B2220 SO Flange S31803 in low-temperature conditions.

Haihao Group’s production and testing processes ensure that each JIS B2220 S31803 SO flange meets the high-quality standards required by the customer. The company’s commitment to precision and quality control is evident in its ability to meet such specific and rigorous demands.

By fulfilling the order for JIS B2220 S31803 SO flange in sizes NB 1100, NB 900, and NB 700, Haihao Group demonstrates its capacity to provide customized solutions for customers around the world. The focus on material characteristics, such as PREN ≥ 35, pitting corrosion resistance, and impact toughness, makes the JIS B2220 SO Flange S31803 ideal for demanding industrial applications.

The collaboration between Haihao Group and the Singapore customer underscores the company’s capability to deliver high-performance JIS B2220 S31803 SO flange products that meet stringent material and testing requirements.