Malleable iron 90° straight elbow is used to connect two pipes by threaded connection, so to make the pipeline turn 90-degree for changing the fluid flow direction.300 Class American Standard Malleable Iron Pipe Fittings Malleable Iron 90° Straight Elbow is a commonly used fitting for corrosion resistance, protection and ease of installation. The product is made of high-quality cast iron material, which can form a strong tensile force after cooling, so that it has excellent durability. In addition, the surface is treated with three fluorination processes, which can reduce the erosion effect on microorganisms in gases, water and fluids. The 90° straight elbow pipe fittings are manufactured according to different regional standards (such as ANSI/ASME B16.3-2018, ASTM A197, DIN EN 10242, etc.), and are widely used in industrial, building and domestic water supply, ventilation and cooling systems . The connection work between fixed terminals can be quickly implemented by manual method during installation. In addition, 300 Class American Standard Malleable Iron Pipe Fittings Malleable Iron 90° Straight Elbow also requires strict testing on raw materials and welding and cutting processing according to ASTM A47 / 47M standards to ensure product performance. In addition, all parts are examined and tested according to EN ISO 9001:2015 requirements to protect the safety of public life.