Petroleum and natural gas industries - Casing centralizers - Part 1: Bow-spring casing centralizers (ISO 10427-1:2001)
Edition 2001-10

Screw threads for drill tubes will diameters exceeding 100 mm for large hole boring in mining
Edition 1990-06

Drill tubes with diameters exceeding 100 mm for large hole boring in mining
Edition 2002-11

Plastics piping systems - Polyethylene (PE) tapping tees - Test method for impact resistance of an asssembled tapping tee; German version EN 1716:1997
Edition 1997-03

Petroleum and natural gas industries - Care and use of casing and tubing (ISO 10405:2000); German and English version EN ISO 10405:2006
Edition 2007-02

Steel filter and solid wall pipes for wells - Part 1: Solid wall pipes and slot perforation filters
Edition 2017-10

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

Rock drilling - Thread connections for thin-walled rotary drilling equipment - Dimensions, design
Edition 2012-11

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

German construction contract procedures (VOB) - Part C: General technical specifications in construction contracts (ATV) - Horizontal directional drilling works
Edition 2019-09