German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Drilling works
Edition 2023-09

Gas Tapping Tees - Part 1: Tapping valves for polyethylene gas pipe systems - Requirements and tests
Edition 2021-11

Gas Tapping Tees - Part 3: Conformity assessment
Edition 2021-11

Graphical layout and documentation of wells and ground water measuring points
Edition 2023-02

Soil, investigation and testing - Determination of the coefficient of water permeability - Part 2: Field tests
Edition 2015-08

Gas Tapping Tees - Part 2: With and without shut-off function for pipes made of cast iron and steel - Requirements and tests
Edition 2021-11

Rock drilling - Flush drills - Drill rod profiles, shanks and tapers
Edition 2009-11

Petroleum, petrochemical and natural gas industries - Safety of machineries - Powered elevators (ISO 20321:2020); German version EN ISO 20321:2020
Edition 2020-07

Gas infrastructure - Underground gas storage - Part 5: Functional recommendations for surface facilities; German version EN 1918-5:2016
Edition 2016-11

Rock drilling equipment; terminology
Edition 1974-02