Types of common flanges according to ASME/ANSI B16.5
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✅ 1. Weld Neck Flange
📐 It has a long neck that is tilted on the tube to reduce stress. Ideal for high pressures up to 5000 psi.
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✅ 2. Slip-On Flange
🔧 Slid on the pipe and welded inside and out. Easy and cheaper to install, but less bearing than a welded neck.
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✅ 3. Socket-Weld Flange
ً The tube is inserted into the cavity and then only meated outward. Suitable for small pipes and high pressure. Cavity may cause moisture to accumulate.
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✅ 4. Threaded Flange
🔩 fixing to tie my coil without welding. Ideal for low pressure systems or welding is prohibited.
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✅ 5. Lap-Joint Flange
♻️ Used with Stub End to facilitate repeated unpacking. Not only suitable for low pressure.
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✅ 6. Blind Flange
⛔Hard drive without opening is used to close pipes or for testing and pressure purposes.
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🛠️ Specialized extras:
Long Weld-Neck Flange: A long welded neck for high-pressure and thermal applications.
Reducer/Expander/Swivel/Orifice/Nipo Flange: for precise and specific industrial purposes.
Vacuum Flanges (KF/QF, ISO, CF): For low pressure, laboratory operators and blanks.
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🏷️ Specifications and categories:
ASME B16.5: Covers up to NPS 24 and Class 150–2500.
ASME B16.47: Tubing over NPS 26.
DIN/PN/ISO 7005: applied in Europe, with limited ANSI compatibility.
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✅ Important recommendations from Pipe Line DZ:
✔️ Choose the type of flask according to pressure, temperature, and installation method (welding or coil).
✔️Make sure the face of the cup is compatible (Raised, Flat, RTJ).
✔️ Check the material of the cup and the allowed pressure before installation.
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🧩 خلاصة:
The six essential types (neck, slip, plug, spin, interlock, blind) form the backbone of any tubing system.
صة Other types provide custom solutions.
📐 Your adherence to ASME B16.5 and ISO 7005 ensures compliance and safety.
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