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High Temperature Stainless Steel Elbow Heat Resistant Boiler Pipe Fitting

Place of Origin Zhejiang, China
Brand Name SMLSCO
Certification ISO 9001:2015, PED
Model Number SS-EB-HT321
Minimum Order Quantity 50 Pieces
Price USD 6.8-50 / Piece
Packaging Details Wooden case with heat resistant packaging
Delivery Time 5 working days for stock, 15-25 days for production
Payment Terms T/T,L/C,Western Union
Supply Ability 20000 Pieces per Month
Product Details
Product Name High Temperature Heat Resistant Stainless Steel Elbow Application Boiler And Furnace High Temperature Piping
Material Grade 321 / 310S Stainless Steel Service Temperature Up To 800 C
Connection Type Butt Weld Heat Treatment Solution Annealed
Size Range DN15 - DN500 Standard ASME B16.9 / ASTM A403
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High Temperature Pipe Elbow

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Heat Resistant Fitting

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321 Boiler Stainless Elbow

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Product Description
High Temperature Stainless Steel Elbow Heat Resistant Boiler Pipe Fitting
This high temperature stainless steel elbow is manufactured from heat resistant 321 stainless steel stabilized with titanium, designed for service up to 800°C. In boiler and furnace piping applications, this elbow resists oxidation and scaling, maintaining its strength through repeated thermal cycles.
Thermal expansion is a primary cause of fitting failure, which is why this heat resistant stainless steel elbow undergoes solution annealing to relax stresses and stabilize the structure. The result is a high temperature pipe fitting that maintains dimensional stability and pressure integrity in steam headers, exhaust ducts, and heat treatment furnaces.
Product Specifications
Parameter Value
Material Stainless Steel 321 / 310S
Service Temp Up to 800°C
Standard ASME B16.9 / ASTM A403
Connection Butt Weld
Size Range DN15 - DN500
Surface Pickled
Heat Treatment Solution Annealed
Application Boiler and furnace piping
Test Hydrostatic and PMI
Packing Wooden case
Key Advantages
  • Titanium stabilized 321 resists high temperature oxidation
  • Withstands repeated thermal cycling without cracking
  • Solution annealed to relieve stress and stabilize structure
  • Maintains strength at elevated boiler and furnace temperatures
  • Resists scaling and creep in continuous high heat service
  • Suits steam, exhaust and heat treatment applications
Applications
  • Boiler superheater and steam headers
  • Furnace and kiln piping
  • Heat exchanger tube connections
  • Exhaust and flue gas ducts
  • Power plant high temperature loops
  • Heat treatment furnace manifolds
Frequently Asked Questions
Q: What temperature can this stainless steel elbow withstand?
A: This high temperature stainless steel elbow is rated for service up to 800°C, making the heat resistant pipe fitting suitable for boiler and furnace duty.
Q: Why use 321 material for a heat resistant elbow?
A: Titanium stabilized 321 prevents chromium carbide precipitation, enabling the high temperature stainless steel elbow to maintain corrosion resistance and strength after prolonged heat exposure.
Q: Is the elbow annealed?
A: Yes. Each heat resistant stainless steel elbow undergoes solution annealing to relieve stress, ensuring the high temperature pipe fitting survives thermal cycling.
Q: Which sizes are available?
A: The heat resistant stainless steel elbow is available from DN15 to DN500. Contact us to specify the high temperature pipe fitting required for your boiler application.
For distributors and OEM buyers, this stainless steel elbow can be supplied in repeat quantities with consistent material specifications and matched tolerances, ensuring predictable reordering of the same high temperature heat resistant specification. Our engineering team reviews every inquiry and confirms the stainless steel elbow drawing before production begins, maintaining alignment with ASME B16.9 / ASTM A403 standards and agreed high temperature heat resistant requirements.
Quality Assurance
Quality is controlled at every stage of production for this stainless steel elbow. From incoming inspection of Stainless Steel 321/310S materials through forming and final testing, each step is documented to provide full traceability back to the heat number. Before packing, each stainless steel elbow undergoes dimensional verification, hydrostatic testing, and PMI analysis. A mill test certificate accompanies every shipment, demonstrating our disciplined high temperature heat resistant manufacturing process that ensures customer satisfaction and repeat business.
Packing and Service
Each stainless steel elbow is protected for ocean freight and packed to maintain edge integrity and seal faces during transit. We support OEM markings, custom sizes, and mixed container shipments. Our export team provides quotations, lead times, and packing plans for high temperature heat resistant stainless steel elbows within one working day. Sampling is available for customer approval before placing bulk orders.
Q: How is quality controlled for this stainless steel elbow?
A: The stainless steel elbow undergoes comprehensive inspection from raw material through final hydrostatic and PMI testing. The high temperature heat resistant manufacturing process is fully documented, providing traceability to the heat number before shipment.
Q: What documents accompany this stainless steel elbow?
A: Every stainless steel elbow shipment includes a mill test certificate and inspection report, providing the traceability expected for high temperature heat resistant stainless steel elbows used in boiler and furnace piping applications.
For boiler and furnace projects, please share your working temperature and size requirements, and we will provide a quotation for this high temperature stainless steel elbow with the appropriate heat resistant grade.