Refractory bricks, blocks, tiles and similar refractory constructional products to be employed in the production of metallurgical coke, iron and steel; Other articles containing magnesite, dolomite or chromite
Articles of stone or of other mineral substances (including carbon fibres, articles of carbon fibres and articles of peat), not elsewhere specified or included. > Other articles: > Containing magnesite, magnesia in the form of periclase, dolomite including in the form of dolime, or chromite > Refractory bricks, blocks, tiles and similar refractory constructional products to be employed in the production of metallurgical coke, iron and steel; Other articles containing magnesite, dolomite or chromite > Refractory bricks, blocks, tiles and similar refractory constructional products to be employed in the production of metallurgical coke, iron and steel; Other articles containing magnesite, dolomite or chromite
Duty Rate (from China)
Products classified under Tariff item 6815.91.10.00
Chromite Investment Casting Shells
Chromite investment casting shells are pre-made ceramic shells with chromite flour stucco, used in precision investment casting for aerospace and turbine blades. They contain chromite, a specified mineral in this tariff item, and are refractory constructional products. They are not excluded by Chapter 68 notes as they are not tools or parts of tools of Chapter 82.
6815.91.10Chromite Mullite Composite Refractories
Chromite mullite composite refractories are composite shapes blending chromite and mullite, used in glass tank regenerator checkerwork. They contain chromite and are refractory constructional products for high-temperature industrial use. They fall under this tariff item as they are not excluded by Chapter 68 notes.
6815.91.10Chromite Sand for Metal Casting Molds
Chromite sand for metal casting molds is foundry-grade sand used as mold facing material. It contains chromite and is an article of mineral substances, not excluded by Chapter 68 notes. It is used in metal casting, which aligns with the metallurgical use requirement.
6815.91.10Dolime-Based Heat Insulation Boards
Dolime-based heat insulation boards are rigid panels made from dolime aggregates for high-temperature industrial ovens. They contain dolomite in dolime form and are fabricated articles. They are not excluded by Chapter 68 notes and are used in industrial heating applications.
6815.91.10Dolime Flux Additive Pellets
Dolime flux additive pellets are pelletized dolime used for electric furnace slag conditioning and phosphorus removal. They contain dolomite in the form of dolime and are fabricated articles for metallurgical use. They are not excluded by Chapter 68 notes.
6815.91.10Dolomite Ramming Mass for Induction Furnaces
Dolomite ramming mass for induction furnaces is dead-burned dolomite powder mixed for ramming into furnace linings. It contains dolomite in dolime form and is used for high-heat applications in steel foundries. It is an article of mineral substances, not excluded by Chapter 68 notes.
6815.91.10Dolomite Stopper Rods for Steel Teeming
Dolomite stopper rods for steel teeming are refractory stopper rods with dolime heads for controlling ladle steel flow. They contain dolomite and are refractory articles for metallurgical use. They are not excluded by Chapter 68 notes, as they are not tools of Chapter 82.
6815.91.10Magnesia Carbon Brick Inserts
Magnesia carbon brick inserts are magnesia matrix inserts with carbon additives for BOF vessel linings. They contain magnesite and are refractory constructional products for steelmaking. They are not excluded by Chapter 68 notes and are used in basic oxygen furnace steelmaking.
6815.91.10Magnesia Chrome Refractory Shapes
Magnesia chrome refractory shapes are preformed blocks combining magnesia and chromite for rotary kilns in cement production. They contain both magnesite and chromite and are refractory constructional products. They are not excluded by Chapter 68 notes.
6815.91.10Magnesia Chrome Taphole Clay
Magnesia chrome taphole clay is a pasty magnesia-chromite clay for sealing blast furnace tap-holes. It contains magnesite and chromite and is a semi-fabricated refractory article. It is used in iron tapping and is not excluded by Chapter 68 notes.
6815.91.10Magnesite Ladle Nozzle Inserts
Magnesite ladle nozzle inserts are replaceable inserts for steel ladle nozzles made from dense magnesite. They contain magnesite and are refractory articles for continuous casting. They are not excluded by Chapter 68 notes and are used in steelmaking.
6815.91.10Magnesite Refractory Bricks
Magnesite refractory bricks are high-temperature resistant bricks primarily composed of magnesite, used in lining industrial furnaces and kilns. They contain magnesite and are refractory constructional products. They are not excluded by Chapter 68 notes.
6815.91.10Periclase Crucible for Metallurgy
Periclase crucible for metallurgy is a laboratory-grade crucible made from fused magnesia (periclase) for melting precious metals and alloys. It contains magnesia in periclase form and is an article of mineral substances. It is not excluded by Chapter 68 notes.
6815.91.10Periclase Furnace Roof Tiles
Periclase furnace roof tiles are curved magnesia tiles for electric arc furnace roofs in steel production. They contain magnesia in periclase form and are refractory constructional products. They are designed for extreme temperatures above 1700°C and are not excluded by Chapter 68 notes.
6815.91.10Periclase Tundish Well Blocks
Periclase tundish well blocks are high-purity periclase blocks forming tundish well nozzles in continuous casting. They contain magnesia in periclase form and are refractory constructional products. They are used in clean steel production and are not excluded by Chapter 68 notes.