JIS B2311 90° LR Elbow | Carbon Steel Butt Weld Pipe Fitting

Premium Industrial Elbows – The Global Choice for Reliable Pipeline Connections
Product Overview We offer a range of high-quality industrial-grade elbows, available in stainless steel, carbon steel, and hot-dip galvanized materials. As core components for global piping system direction changes, our elbows strictly adhere to mainstream international manufacturing standards, providing safe, leak-proof, and long-lasting piping direction-changing solutions for industrial infrastructure worldwide. Our products are sold in numerous international markets, including Europe, America, the Middle East, and Southeast Asia.
Core Product Parameters
Materials: Premium stainless steel (304, 304L, 316, 316L), high-strength carbon steel (A105, WCB, Q235), and corrosion-resistant galvanized treatment.
Size Range: 1/2" - 48" (DN15 - DN1200), custom orders based on drawings are welcome.
Pressure Ratings: ASME/ANSI: Class 150 - Class 2500
EN/DIN: PN6 - PN100
JIS: 5K - 30K
Manufacturing Standards: ASME/ANSI B16.9, DIN, EN10253-1/2, JIS B2311, GOST.
Elbow Types: 45° elbow, 90° elbow, 180° return bend; seamless elbow, welded elbow; long radius elbow (LR), short radius elbow (SR) Threaded elbow.
Main Applications
Petrochemical and Natural Gas: Suitable for the harsh environments of oil refineries, offshore drilling platforms, and long-distance pipelines with high pressure and strong corrosion, used for changing pipeline direction in conveying systems.
Engineering and Municipal Engineering: Widely used in water supply and drainage networks, fire protection systems, and urban central heating pipelines in large commercial buildings, adapting to pipeline layout changes and space constraints.
Water Treatment & Power: Meets the stringent requirements of acid and alkali resistant pipelines in chemical plants, wastewater treatment facilities, and high-temperature, high-pressure steam systems in power plants, ensuring stable direction change without leakage.
Key Product Advantages
Precision CNC Machining: Utilizing fully automated CNC machine tools, elbows exhibit uniform wall thickness, accurate angle (45°/90°/180°) and extremely high surface finish on connection surfaces, ensuring tight fit and zero leakage at pipeline connections.
Superior Corrosion and Pressure Resistance: 304/316 stainless steel provides top-tier rust resistance, a thick galvanized layer effectively resists external environmental corrosion, and carbon steel construction ensures structural stability under high-pressure and high-temperature conditions.
Efficient and Seamless Installation: Precise diameter and end dimension tolerance perfectly match various standard pipes and fittings, significantly reducing welding and assembly difficulties on-site, improving construction efficiency.
Quality & International Certification: Each batch of products undergoes rigorous ultrasonic testing and hydrostatic testing. The products have passed ISO 9001 quality management system certification, CE EU safety certification and relevant industry standard certifications. The products are equipped with EN 10204 3.1 material testing report (MTC) as standard, ensuring free circulation in the global market and meeting the acceptance standards of various multinational engineering projects.