90 Degree Long Radius Elbow Forged 304 316 Stainless Steel Seamless Butt Weld Fittings

This 90-degree long radius elbow is a core pipe fitting for changing pipeline flow direction, with the core advantages of standard compliance, high strength, seamless structure and reliable performance. Different from ordinary elbows, it adopts precision forging and seamless processing, and strictly follows ASME B16.9 standard in dimensional accuracy, wall thickness uniformity and welding compatibility, while CE/ISO certification ensures that the product meets global quality and safety requirements. The 304SS and 316SS dual material options can meet the differentiated needs of different corrosion environments, and the long radius design is specially optimized for high-flow, high-pressure fluid transmission scenarios.

• Premium Material: 304SS & 316SS Stainless Steel: Made of high-quality 304SS (1.4301) and 316SS (1.4401) stainless steel. 304SS offers excellent general corrosion resistance and cost-effectiveness, suitable for conventional industrial pipelines; 316SS contains molybdenum (Mo) element, with superior resistance to pitting, saltwater, chloride and chemical corrosion, ideal for coastal, marine, chemical and pharmaceutical harsh environments.
• 90-Degree Long Radius Design: Centerline radius (CLR) = 1.5×nominal diameter, which minimizes fluid resistance, reduces pressure loss, avoids medium accumulation and scaling, and ensures smooth transmission of high-flow, high-viscosity fluids (such as oil, gas, steam).
• Seamless Forged Structure: Adopts integral seamless forging technology, no welding seam on the elbow body, high structural density, uniform wall thickness, strong pressure resistance and impact resistance, effectively preventing leakage, deformation and cracking under long-term high-pressure operation.
• Butt Welding Connection: Designed for butt welding (BW) connection, which realizes full fusion between the elbow and the pipeline, forming an integrated structure with high sealing, zero leakage and strong connection stability, suitable for closed pipeline systems and high-pressure fluid transmission.
• ASME B16.9 Standard Compliance: Strictly manufactured in accordance with ASME B16.9 standard, ensuring consistent dimensional accuracy, wall thickness tolerance and welding bevel design, fully compatible with international standard seamless pipelines, facilitating global procurement and project application.
• CE/ISO Certification: Certified by CE and ISO, meeting global quality management system and safety standards, ensuring product reliability and compliance with import requirements of various countries and regions.

We adopt advanced seamless forging technology and strict production control to ensure the quality and performance of each elbow:

1. Raw Material Selection: Select high-quality 304SS/316SS stainless steel billets, conduct strict chemical composition analysis and mechanical performance testing to ensure material purity and stability.
2. Precision Forging: Adopt hot forging technology, heat the billet to the optimal forging temperature, and form it integrally through precision die forging, ensuring uniform wall thickness, smooth inner/outer wall and no internal defects.
3. Solid Solution Heat Treatment: After forging, the elbow undergoes solid solution heat treatment to eliminate internal stress, improve toughness, corrosion resistance and welding performance, preventing deformation and cracking under long-term high pressure and high temperature.
4. Precision Machining: Conduct precision machining on the elbow end face and bevel, ensuring dimensional accuracy and welding compatibility, making it perfectly matched with seamless pipelines during butt welding.
5. Quality Inspection: Each elbow undergoes comprehensive inspection, including non-destructive testing (NDT), pressure test (water pressure/air pressure), dimensional measurement, appearance inspection and chemical composition analysis. We provide complete MTR (Mill Test Report) and third-party inspection reports (SGS, BV) to ensure product qualification.

• High Pressure Resistance: Seamless forging structure and thickened wall design (optional) enable the elbow to withstand high pressure and instantaneous pressure impact, suitable for high-pressure pipeline systems such as steam, natural gas and chemical media.
• Excellent Corrosion Resistance: 304SS/316SS material ensures good anti-oxidation, anti-rust and anti-chemical corrosion performance, adapting to humid, coastal, acid-base and other harsh environments, with long service life.
• Smooth Fluid Transmission: Long radius design and smooth inner wall reduce fluid resistance, avoid medium accumulation and scaling, reduce energy consumption, and ensure efficient transmission of high-flow fluids.
• Strong Weldability: The end face bevel is processed in accordance with ASME B16.9 standard, which can be fully fused with the pipeline during butt welding, with high welding strength and no leakage.
• Durable & Low Maintenance: Wear-resistant, aging-resistant and not easy to deform, the service life is 3-5 times that of ordinary elbows, reducing later maintenance and replacement costs.
• Wide Compatibility: Fully compliant with ASME B16.9 standard, compatible with international standard pipelines of various brands, suitable for global industrial projects.

This 90-degree long radius seamless forging elbow is widely used in various industrial fields that require high pressure, corrosion resistance and smooth fluid transmission, especially suitable for:

• Chemical & Petrochemical Industry: High-pressure chemical pipelines, petrochemical product transmission, acid-base solution transportation, reaction vessel connecting pipelines (316SS material preferred).
• Energy & Power Industry: Power plant high-temperature steam pipelines, thermal pipeline systems, natural gas transmission and distribution pipelines, hydropower engineering pipelines.
• Marine & Coastal Engineering: Offshore platform pipelines, marine vessel pipelines, seawater desalination pipelines, coastal water supply and drainage pipelines (316SS material with excellent salt spray resistance).
• Water Treatment & Environmental Protection: High-pressure water supply pipelines, sewage treatment pipelines, pure water production pipelines, industrial wastewater treatment pipelines.
• Food & Pharmaceutical Industry: Sanitary pipeline systems, food and beverage processing pipelines, pharmaceutical production pipelines (non-toxic, corrosion-resistant, easy to clean).
• Industrial & Civil Construction: Building fire protection high-pressure pipelines, industrial equipment connecting pipelines, large-scale engineering pipeline installation, heating and ventilation pipelines.

We provide flexible customization services to meet the special needs of different projects, beyond standard specifications:

• Non-standard nominal diameter (beyond 1/2"-24") and wall thickness customization.
• Special material customization (316L, 321, etc.) for extreme corrosive environments.
• Special pressure grade customization according to project requirements.
• Custom surface treatment (high-polish, anti-fingerprint, etc.) and marking.

• Packaging: Export-standard packaging, each elbow is wrapped with waterproof paper and PE film to prevent scratches, rust and moisture; outer packaging adopts fumigated wooden pallets or wooden boxes (complying with ISPM 15 standard), reinforced with steel strips to avoid damage during loading, unloading and long-distance sea transportation.
• MOQ: Small trial orders (≥1 piece) are welcome for quality inspection; bulk orders enjoy competitive pricing and preferential policies.
• Lead Time: 3–7 days for standard specifications (in stock); 7–15 days for customized orders (depending on order quantity and customization requirements).
• Shipping: Support sea freight (FCL/LCL), air freight and express delivery (DHL, FedEx); provide complete shipping documents (commercial invoice, packing list, bill of lading, MTR, CE/ISO certification, inspection report) to ensure smooth customs clearance.

As a professional manufacturer of stainless steel pipe fittings, we have rich experience in forging and seamless processing, advanced production equipment and a strict quality control system. Our 304SS/316SS 90-degree long radius elbow has the following core advantages to win the trust of global customers:

• Strict compliance with ASME B16.9 standard, CE/ISO certified, quality and safety are guaranteed.
• Seamless forging structure, high strength, pressure resistance and corrosion resistance, suitable for harsh working environments.
• 304SS/316SS dual material options, full size coverage, one-stop meeting diverse project needs.
• Flexible customization services, professional technical support, tailored solutions for different projects.
• Factory direct pricing, no middlemen, cost-saving for bulk procurement.
• Perfect after-sales service, 24-hour order tracking and technical consultation, worry-free purchasing.

We sincerely welcome global B2B buyers, distributors, engineering contractors and processing manufacturers to inquire about samples and place bulk orders. We will provide you with high-quality 90-degree long radius elbows and professional one-stop services, and work together to achieve win-win cooperation!