What Are Flow Steel Bricks
Flow steel bricks, also known as runner bricks or bottom‑pouring bricks, are hollow refractory components specially designed for ingot bottom‑casting systems. Installed inside grooves of casting bottom plates, they connect distribution bricks and ingot moulds, forming sealed channels for high‑temperature molten steel transportation from ladle to each mould cavity. Made of fire clay, high‑alumina or mullite raw materials, these bricks feature smooth inner holes and tight‑fit joints to minimize molten‑steel flow resistance and avoid steel leakage during casting operations. They are irreplaceable consumables for carbon steel, alloy steel and stainless‑steel ingot production in steel mills and foundries.
Key Performance Benefits for Steel Casting
Quality flow steel bricks deliver multiple production‑critical advantages. First, outstanding high‑temperature resistance supports long‑term service under 1500‑1700℃ molten‑steel conditions, resisting slag corrosion and molten‑steel scouring. Second, good thermal‑shock stability prevents cracking under sharp temperature changes, lowering unexpected production shutdown risks. Precise dimensional tolerance ensures close brick‑to‑brick assembly, reducing turbulence and secondary oxidation of liquid steel. By limiting refractory spalling into molten steel, these bricks effectively cut ingot defects such as inclusions and porosity, improving final steel product quality and overall casting yield. Meanwhile, easy‑to‑install structure shortens lining replacement cycles and helps control your operational cost.
Common Material & Specification Options
Flow steel bricks cover multiple material grades with Al₂O₃ content ranging from 40% to 80% to match diverse steel‑grade requirements. Clay‑based grades suit general carbon‑steel casting; high‑alumina and mullite grades are preferred for alloy and special steel production with stricter purity demands. Core technical indicators include refractoriness up to 1780℃, cold crushing strength 30‑70 MPa, and apparent porosity controlled within 22‑28%. Standard shapes include centre bricks, divider bricks and tail bricks; custom dimensions and special profiles according to client drawings are supported. Samples can be supplied for on‑site performance testing before bulk orders.
Get Your Custom Quotation for Flow Steel Bricks
Choosing suitable flow steel bricks directly influences casting safety, ingot quality and refractory consumption. If you are sourcing reliable runner bricks for your steel plant or foundry project, share your requirements including steel type, working temperature, drawing specifications, target quantity and destination port. Our team will review your technical parameters and send a detailed formal offer with full material test data, MOQ, lead‑time and shipping terms. Submit your inquiry today to get competitive pricing and professional refractory technical support.
Post time: Sep-15-2026
