Zhejiang Daye Flange Co., Ltd. is one of the leading manufacturers and suppliers of lr sr 180 degree elbow in China. With abundant experience, we are committed to providing high quality flanges made in China with competitive price. We warmly welcome you to buy durable lr sr 180 degree elbow in stock here from our factory. Also, quotation is available.
LR SR 180 degree elbows are industrial butt‑weld fittings that deliver 180‑degree pipeline deflection to reverse fluid flow. They serve for direction reversal and loop‑layout optimization for industrial piping systems.
It enables 180° flow return, simplifies loop structures, optimizes space utilization and builds process loops.
Parameters
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Standard: |
GB/T12459, ASME B16.9, ASME B36.10M, ASME B36.19M. EN 10253‑2, EN 10253-4 MSS SP‑75, MSS SP-43 |
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Size: |
Seamless:1/2"-24"(DN15-DN600) Welded:1/2"-48"(DN15-DN1200) |
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Thickness: |
SCH5S-XXS |
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Grade: |
Stainless steel: 304/304L, 316/316L, 321, 316Ti, 347/347H, 310S Super stainless steel: 254SMO/F44,904L Duplex steel: F51/2205, F53/2507 Special alloy steel:Inconel(625,600,718,750,601), Hastelloy(276,C-22,C-4,C,X,B-2), Monel(400,500), Incoloy(800, 825, 020, 028,925), etc |
Product Advantage
- Enhanced fluid‑flow characteristics
- Excellent structural dependability
- Easier installation & operational‑maintenance access
Applications
Petrochemical process piping
Bypass loops for long‑distance transmission pipelines
In‑plant piping inside industrial equipment
Low‑pressure utility service
Test
Mill certificate,100%PMI,Tensile Test,Hardness Test,Impact Test,IC Test,etc.it depends on the requirements.
Cerfitications
PED
PED
ISO 45001
ISO 9001
ISO 14001
Packaging
Outer Packaging:
Fumigated wooden crates/Fumigation-free plywood crates/Customized wooden crates
Inner Packaging:
Plastic flange protectors/Bubble wrap/Cardboard/Protective paper
Packaging can be customized to meet your specific requirements.
FAQ
Q: What is the difference between one‑piece 180° elbow and two spliced 90° elbows?
A: The one‑piece 180° elbow delivers smoother flow path and lower flow resistance. It halves the number of welds, reducing leakage risk and offering higher structural strength. Meanwhile, it enables easier installation with better dimensional accuracy.
Q: How to choose between LR and SR 180° elbows?
A: Select LR long‑radius elbows for medium‑to‑high pressure, high flow velocity, large temperature fluctuation and erosion‑prone service. SR short‑radius elbows are suitable for applications with limited installation space, low‑pressure & low‑flow‑rate media and non‑critical pressure‑drop requirements.
Q: Are LR SR 180 degree elbows identical to heat‑exchanger U‑tubes?
A: No. The 180° elbow is a standard butt‑weld fitting manufactured per ASME B16.9, whose two ends are welded to straight pipes. Heat‑exchanger U‑tubes are bent from a single full‑length pipe as tube‑bundle components and comply with pipe material standards.
Q: Can LR SR 180 degree elbows be manufactured to meet NACE sulphide‑resistance requirements?
A: Yes. They can be produced from raw materials complying with NACE MR0175 / ISO 15156 for oil‑and‑gas service involving hydrogen‑sulfide media. LR long‑radius type is preferred for severe erosion‑prone environments.
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