Standards

Current Category: CN-DZ - Geology

Status: All
All Active Pending Replaced Abolished Abolished (Transferred)
Publish Year: 2021& Before
All 2026 2025 2024 2023 2022 2021& Before
DZ/T 0057-1993 Active

DZ/T 0057-1993 Hydraulic well drilling drill bit with drill stone

Publish Date: 1993-02-19
DZ/T 0058-1993 Active

DZ/T 0058-1993 The rock core drilling tool used for geological drilling

Publish Date: 1993-02-19
DZ 21-1982 Replaced

DZ 21-1982 Carbide-tipped drill bit

Publish Date: 1982-12-30