CEN/TC 121
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 66938 | LVS EN ISO 3821:2020 | Gas welding equipment - Rubber hoses for welding, cutting and allied processes (ISO 3821:2019, Corrected version 2021-05) | Standarts spēkā |
| 21456 | LVS EN ISO 3834-1:2006 | Quality requirements for fusion welding of metallic materials - Part 1: Criteria for the selection of the appropriate level of quality requirements | Atcelts |
| 72536 | LVS EN ISO 3834-1:2021 | Quality requirements for fusion welding of metallic materials - Part 1: Criteria for the selection of the appropriate level of quality requirements (ISO 3834-1:2021) | Standarts spēkā |
| 21457 | LVS EN ISO 3834-2:2006 | Quality requirements for fusion welding of metallic materials - Part 2: Comprehensive quality requirements | Atcelts |
| 72537 | LVS EN ISO 3834-2:2021 | Quality requirements for fusion welding of metallic materials - Part 2: Comprehensive quality requirements (ISO 3834-2:2021) | Standarts spēkā |
| 21458 | LVS EN ISO 3834-3:2006 | Quality requirements for fusion welding of metallic materials - Part 3: Standard quality requirements | Atcelts |
| 72538 | LVS EN ISO 3834-3:2021 | Quality requirements for fusion welding of metallic materials - Part 3: Standard quality requirements (ISO 3834-3:2021) | Standarts spēkā |
| 21459 | LVS EN ISO 3834-4:2006 | Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements | Atcelts |
| 72539 | LVS EN ISO 3834-4:2021 | Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO 3834-4:2021) | Standarts spēkā |
| 23117 | LVS EN ISO 3834-5:2006 | Quality requirements for fusion welding of metallic materials - Part 5: Documents with which it is necessary to conform to claim conformity to the quality requirements of ISO 3834- 2, ISO 3834-3 or ISO 3834-4 | Atcelts |
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