| Customization: | Available |
|---|---|
| After-sales Service: | 1 Year |
| Warranty: | Available |
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Size |
Seamless 1/2" To 48" Welded To 72" |
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Wall thickness |
Sch5S-Sch160, XS,XXS |
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Standards |
ANSI, ASTM,DIN, JIS, BS, ISO, GB, SH, AND HG etc |
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Material |
Stainless Steel: ASTM A403 WP304, 304L, 310, 316, 316L, etc Carbon Steel: ASTM A234 WPB, WPC ASTM A105 WPHY 42, etc Alloy Steel: ASTM A234 WP1, etc Low Temperature: ASTM A420 WPL 1, etc Duplex and super duplex steel: ASTM A815 UNS S31803/S32205/S32750/S32760/S32550 |
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Surface treatment |
Sand Rolling, Sand Blasting ,Acid Cleaning. |
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Packing |
wooden case, pallet or as customers' requirement |
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Applications |
Petroleum,chemical,power,gas,metallurgy, shipbuilding, construction, etc |
The pressure-temperature rating is the maximum allowable working pressure (bar unit) of the material and grade used at the rated temperature (Celsius).
Whether flange joints are used at high or low temperatures, leakage due to external forces and moments generated by the connected piping or equipment should be considered. To prevent leakage, pipe flanges and flanged fittings should avoid the application of severe external loads and sharp thermal gradients.
Application at temperatures in the creep range will result in decreasing bolt loads as relaxation of flanges, bolts, and gaskets takes place. Flanged joints subjected to thermal gradients may likewise be subject to decreasing bolt loads. Decreased bolt loads diminish the capacity of the flanged joint to sustain loads effectively without leakage. At temperatures above 200°C (400°F) for Class 150 and above 400°C (750°F) for other class designations, flanged joints may develop leakage problems unless care is taken to avoid imposing severe external loads, severe thermal gradients, or both.
Some materials, especially some carbon steel materials, exhibit a significant decrease in ductility when used at low temperatures, and thus cannot withstand impact load, sudden stress changes, and high stress concentrations. Some regulations require an impact test even when the temperature is above -29 °C (−20°F).
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