Products

Products

Longan is a professional manufacturer and supplier in China. Our factory provides stainless steel flanges, Steel Flat Flange, Convex Flange, etc. If you are interested in our products, you can inquire now, and we will get back to you promptly.
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Duplex stainless steel forged flanges
Duplex stainless steel forged flanges
Procuring heavy-duty components from a China Duplex stainless steel forged flanges factory allows engineering firms to cut weight without sacrificing safety. Longan Flange delivers these high-strength forged connections to withstand aggressive chemical environments.
316L stainless steel forged flange
316L stainless steel forged flange
Longan Flange offers industrial buyers the option to wholesale 316L stainless steel forged flange components directly from our production line. This component effectively eliminates grain-boundary chromium depletion, stopping structural cracking during heavy industrial welding processing.
sme b16.5 flat face flange
sme b16.5 flat face flange
The sme b16.5 flat face flange is manufactured by Longan factory under the ASME B16.5 standard framework. Its bionic honeycomb structure increases bending strength by 65%, and the measured DN300 burst pressure reaches 42MPa, exceeding the GB/T 1048 requirement by 280%. The gradient quenched high-carbon steel combined with the neck-embedded titanium alloy reinforcement ring provides 89J impact toughness at -70°C. The product has passed API 6A PSL 3G certification and is suitable for ultra-high pressure gas media. Longan factory supplies directly, supporting batch customization and fast delivery.
flat raised face flange
flat raised face flange
A flange that works with both full-face and raised-face gaskets is now available. The flat raised face flange from Longan delivers exactly that. It handles DN300 burst pressures up to 42MPa (280% above GB/T 1048) and boosts bending strength by 65% through a bionic honeycomb structure. API 6A PSL 3G certified. Factory-direct pricing, free samples, and technical support provided.
stainless steel flat flange
stainless steel flat flange
The stainless steel flat flange with excellent corrosion resistance is directly manufactured by Longan factory, offering much higher cost performance than European and American suppliers. The gradient quenching process combined with bionic honeycomb structure increases bending strength by 65%. The DN300 burst pressure reaches 42MPa, and it has passed API 6A PSL 3G certification. It is suitable for corrosive environments such as offshore platforms and seawater pipelines, and supports customized production.
flat flange asme b16.5
flat flange asme b16.5
Manufactured by Longan in China, this flat flange asme b16.5 is available at factory rates with custom non-standard sizes. Built with gradient quenching and bionic honeycomb structure, it boosts bending strength by 65%. The DN300 variant reaches a burst pressure of 42MPa (280% higher than national standards) and holds API 6A PSL 3G certification. We accept customization per drawings and samples.
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