metal and semimetal gasket for pipes lines

Flexible tubes and hoses, not of metal, for agricultural irrigation; flexible tubes of plastic; plastic tubes for agricultural irrigation; non-metal flexible tubing; flexible hoses, not of metal; non-metal hoses for agricultural use; irrigation hoses; non-metal junctions and jointing compounds for flexible tubes for agricultural irrigation; non-metal junctions and jointing compounds for flexible hoses for agricultural irrigation

agricultural implements for irrigation; namely, sprinklers, sprinkler heads, valves, fittings

Oil and gas well treatment; refining services; refining of petroleum products; oil refinery services; petrochemical refining services; processing of chemical and petrochemical substances; processing of natural gas; filtration and purification of natural gas; processing of oil and natural gas; treatment of materials using chemicals; treatment of oil spills; technical consulting in the field of oil and gas wells treatment; technical consulting in the field of gas production and processing; tech...