Products

If you want to find a factory that can provide you with wholesale and customized services, you can consider us; Longan 304 stainless steel flanges have a super cost-effectiveness and are the choice of most general industrial pipelines.
304 stainless steel flanges have various types, including blind plates, butt-welded necks, loose sleeves, threaded types, etc., and the chromium-nickel content is ≥18/8% verified by XRF. The service life in ordinary environments (pH>4.5) is more than 10 years, which is 400% higher than carbon steel. However, the cost is 35% lower than that of 316 flanges.

304 welding flange complies with ASME B16.5 standard, and the pressure covers Class 150~900. After 500 hours of salt spray test, the service life of carbon steel flange is increased by 400%, and the cost is 30~35% lower than that of 316 flange.

304 Neck Butt Welding Flange is suitable for non-extreme corrosion scenarios such as water treatment, HVAC, and food equipment. The product provides corrosion resistance in oxidizing environments through 18% chromium + 8% nickel components, complies with ASME B16.5 standards, and covers pressures from Class 150 to 900. Verified by a 500-hour salt spray test, the life of carbon steel flanges is increased by 400%, and the cost is 30 to 35% lower than 316 stainless steel. ASTM A182 material certification and dimensional accuracy reports are also provided.

Long Weld Neck Flanges have significantly improved corrosion resistance in chloride environments through ≥2.1% molybdenum content, comply with ASME B16.5 standards, and cover pressures from Class 150 to 2500. Compared with 304 flanges, the salt spray test has been verified for 1,000 hours, and the service life can be increased by 300%, reducing leakage risks and maintenance costs. Suitable for harsh scenarios such as seawater desalination, chemical industry, and pharmaceuticals, ASTM A182 material certification (MTR) and third-party certification (NACE/PED) can be provided

High-quality 316 Neck Butt Welding Flanges can provide superior corrosion resistance in chloride environments. Longan produces a full range of 316 flanges with pressure ratings from 150 to 2500 and sizes from 1/2 inch to 24 inches. We are MTR certified, have sufficient supply and fast delivery. Click here to request a quote now!

You can rest assured to buy High Pressure Flange from our factory. Longan provides engineering-grade flange solutions to solve high-pressure seal failures, covering stainless steel/carbon steel/alloy steel, etc., meeting DINA, SME, API, standards, and providing pressure calculator + 72h emergency replacement service, as well as free system diagnosis services. Come and contact us.