Barite
HS code
2511
Barium sulphate for drilling fluid weighting and industrial filler. Drilling grade trades on specific gravity.
Specification
What to specify
What a supplier will ask you for, in the order they will ask.
- 01 Specific gravity — API drilling grade is 4.20 minimum
- 02 Particle size — 3% max retained above 75 microns, 30% max below 6 microns
- 03 Barium sulphate content
- 04 Mesh size for ground material
- 05 Soluble alkaline earth metals content
- 06 Mercury and cadmium ceilings, where the operator enforces them
- 07 API 13A compliance requirement