Find HS Code and trade information for water drill paste

Water Drill Paste

Water drill paste, also known as diamond paste, is a polishing compound used in precision grinding, lapping, and polishing applications. It consists of micron-sized diamond particles suspended in a carrier fluid, typically oil or water-based gels.

Material Composition:

• Diamond Particles: The abrasive component, determining the paste’s cutting ability. Diamond grit sizes range from coarse (for rapid material removal) to extremely fine (for achieving mirror-like finishes). Synthetic diamonds are most commonly used due to cost-effectiveness and consistent quality.
• Carrier: The fluid medium that holds the diamond particles and facilitates their application.
  • Oil-based pastes: Commonly use mineral oil. Provide good lubrication and longer working life but require thorough cleaning post-application.
  • Water-based pastes: Utilize glycol or other water-soluble carriers. Easier to clean, environmentally friendlier, and suitable for temperature-sensitive materials.
• Additives: May include surfactants to improve wetting, viscosity modifiers for consistent application, and rust inhibitors to protect workpieces.

Purpose & Function:

The primary function of water drill paste is to remove material from a workpiece in a controlled manner, achieving:

• High Precision: Enables extremely accurate shaping and sizing.
• Smooth Surface Finish: Produces surfaces with low roughness values, often required for optical components, seals, and molds.
• Material Removal: Effectively grinds and polishes hard materials like ceramics, glass, carbides, gemstones, and some metals.

Usage Scenarios:

• Optical Component Manufacturing: Polishing lenses, prisms, and mirrors to exacting specifications.
• Gemstone Cutting & Polishing: Shaping and finishing diamonds and other precious stones.
• Ceramic Processing: Achieving precise dimensions and smooth surfaces for ceramic parts.
• Metalworking: Finishing hard metals like tungsten carbide, often used in cutting tools.
• Glass Processing: Polishing glass for optical applications or decorative purposes.
• Mold & Die Making: Creating smooth, accurate surfaces on molds and dies.

Common Types:

Water drill paste is categorized based on several factors:

• Diamond Grit Size: Measured in microns (µm).
  • Coarse (40µm - 100µm): Rapid material removal, rough grinding.
  • Medium (10µm - 30µm): Moderate material removal, intermediate polishing.
  • Fine (3µm - 10µm): Fine polishing, achieving good surface finish.
  • Ultra-Fine (0.25µm - 1µm): Mirror polishing, highest surface finish.
• Carrier Type:
  • Oil-Based Diamond Paste: Longer working life, better lubrication, requires solvent cleaning.
  • Water-Based Diamond Paste: Easier cleaning, environmentally friendly, suitable for temperature-sensitive materials.
• Diamond Concentration: The percentage of diamond particles in the paste, influencing cutting speed and cost. Higher concentration pastes are more aggressive.
• Color Coding: Different colors are often used to identify grit sizes for quick selection. (e.g., Red for coarse, Green for medium, Blue for fine).

Water drill paste is not explicitly listed as a specific commodity within the provided reference material. However, based on its potential use and composition, the following HS codes may be relevant:

• 3810.90.50.00: This HS code covers “Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods: Other: Other”. If the water drill paste is used in metalworking processes as an auxiliary preparation (e.g., for cleaning or preparing metal surfaces before drilling), this code may apply. The tax rate details are: Basic tariff: 5.0%, Additional tariff: 25.0%, Additional tariff after 2025.4.2: 30%, with a total tariff of 60.0%.
• 3824.99.70.00: This HS code covers “Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included: Other: Other: Other: Other: Other: Mixtures of dibromo neopentyl glycol; Polydibromophenylene oxide; Tetrabromobisphenol-A-carbonate oligomers; and Electroplating chemical and electroless plating solutions and other materials for printed circuit boards, plastics and metal finishings”. If the water drill paste is a chemical preparation used in metal finishing or related processes, this code could be applicable. The tax rate details are: Basic tariff: 0.0%, Additional tariff: 25.0%, Additional tariff after 2025.4.2: 30%, with a total tariff of 55.0%.

According to the provided reference material, the HS code options related to 'water drill paste' are limited, with only the following 2 found.

It is important to determine the exact composition and intended use of the water drill paste to ensure correct classification. If the paste contains specific chemical components listed under 3824.99.70.00 (e.g., mixtures of dibromo neopentyl glycol), that code may be more appropriate. Otherwise, if it functions as a preparation for metal surfaces, 3810.90.50.00 should be considered.