Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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We are one of the largest engineering piping product suppliers in China, our products include steel pipes/pipes, pipe fittings, flanges. After more than 20 years of development, we have accumulated many customers all over the world, and Yuhong products have also won unanimous praise from customers.
AS4087 is the latest standard for BS Tables D to H, using the same boreholes but with a new PN pressure rating system. The flange thickness has increased slightly due to the new pressure rating being slightly higher. Also, the convex dimension (although rarely specified, mostly flat is used) is slightly larger. Tables C, J to R no longer exist, PN16 drilling is the same as Table D, PN21 is the same as Table E, PN35 is the same as Table H.
This AS 4087 flange standard specifies requirements for circular flanges made of copper alloys, grey cast iron, ductile iron or steel. The shape of the flange can also be any other shape. It covers nominal sizes of PN 14, PN 16, PN 21 and PN 35 for pressure classes with operating temperatures up to 80°C. The standard also specifies requirements for joining materials. Flanges are suitable for pipes, fittings, valves and other accessories primarily used to transport or store water or waste water. NOTE: For applications beyond the limits specified in this standard, appropriate flange details can be determined from AS 2129 Series, Flanges for pipes, valves and fittings and AS/NZS 4331 Series, Metallic flanges.
| Standard Specifications | ASTM A182 / A240 & ASME SA182 / SA240 |
|---|---|
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Standard |
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| Size Range | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 or special sizes |
| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
| Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| JIS | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Most common types | Forged / Threaded / Screwed / Plate |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production technique |
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| Special design | As per your drawing AS, ANSI, BS, DIN and JIS |
| Origin | China |
| Uses & application |
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| We produce |
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| Export to | Dubai, UAE, Indonesia, Ireland, Malaysia, Singapore,Egypt, Saudi Arabia, Spain, Canada, USA, Brazil, Thailand, Korea, Oman, Peru, etc |
| SS | Mn | C | Si | P | S | Cr | Mo | Ni | N |
| A182 F316 | 2 max | 0.08 max | 1.0 max | 0.045 max | 0.030 max | 16.00 – 18.00 | 2.00 – 3.00 | 11.00 – 14.00 | 67.845 min |
| A182 F316L | 2 max | 0.035 max | 1.00 max | 0.045 max | 0.030 max | 16.00 – 18.00 | 2.00 – 3.00 | 10.00 – 14.00 | 68.89 min |
| SS | Density | Melting Range | MPa-Psi Tensile Strength | MPa-Psi Yield Strength (0.2%Offset) | % Elongation |
| F316/ SS 316 | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| F316L/ SS 316L | 8.0 g/cm3 | 1399 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 |
Corrosion resistance
Chromium, molybdenum, nickel and nitrogen all contribute to overall resistance to corrosion by various media. Chromium is the primary agent for imparting corrosion resistance in neutral or oxidizing environments. Chromium, molybdenum and nitrogen increase resistance to pitting corrosion. Nickel imparts an austenitic structure. Both nickel and molybdenum provide higher resistance to chloride stress corrosion cracking in reducing environments.
