Preparing the working area> Learn moreDigging the trench> Learn moreLowering the water table is sometimes necessary> Learn morePipes checked and specially protected > Learn moreChecking the welded joints> Learn morePipelines laid deep in the ground> Learn moreTests before commissioning> Learn moreSpecial attention given to site restoration> Learn more
Use "quotation marks" to search for a series of words or a phrase in a specific order.
You can find a group of words or a phrase by using the link words AND, OR and NOT: known as Boolean operators, these words are used to combine terms in the search field.
AND: All the search terms must be included in the publication. Typing in Apple AND Pear will return publications containing both the word Apple and the word Pear.
OR : At least one of the search terms must be included in the publication. Typing in Apple OR Pear will return publications containing either the word Apple or the word Pear or both.