GDPR

Mandatory cookies

Mandatory cookies enable the main website functions. Without the aforementioned cookies the website cannot function properly. These cookies can be turned off only by changing the browser settings.

Statistics cookies

Analytical cookies allow us to improve the website by collecting and providing information about its usage.

Newsletter subscription

projektai-lsd Lithuanian Standards Board
Portal for draft standards
Register

List of drafts

Extended search

till

Results

Showing:
Total records found: 256
arrow-prev 1 2 3 4 … 11 arrow-next
prEN ISO 19085-2 Public enquiry
Comment end date 2026-06-08
Woodworking machines - Safety - Part 2: Horizontal beam panel circular sawing machine (ISO/DIS 19085-2:2026)

This document gives the safety requirements and measures for horizontal beam panel circular sawing machines with the saw carriage of the front cutting line mounted below the workpiece support, which are manually and/or powered loaded and manually unloaded, capable of continuous production use, as defined in 3.1 and hereinafter referred to as “machines”. This document deals with all significant hazards, hazardous situations and events as listed in Annex A, relevant to the machines, when operated, adjusted and maintained as intended and under the conditions foreseen by the manufacturer including reasonably foreseeable misuse. Also, transport, assembly, dismantling, disabling and scrapping phases have been taken into account. It is also applicable to machines fitted with one or more of the following devices/additional working units, whose hazards have been dealt with: —    side pressure device; —    device for powered unloading; —    unit for scoring; —    unit for post-formed/soft-formed edge pre-cutting; —    panel turning device; —    front side turn table; —    pushing out device; —    pneumatic clamping of the saw blade; —    powered panel loading device; —    device for grooving by milling tool; —    one or more additional cutting lines inside the machine for longitudinal and/or head cut (before the transversal cutting line); —    workpiece vacuum clamping as part of a front side turn table or of a panel loading device; —    panel pusher; —    independent panel pushers; —    additional panel pushers mounted on the panel pusher carriage; —    additional panel pusher with integrated label printer device; —    lifting platform; —    device for automatic loading of thin panels; —    device for base board unloading by gravity; —    device for base board powered unloading; —    device for panel unloading in limited space condition; —    loading or pre-loading roller conveyors; —    pressure beam with additional flaps to increase dust extraction efficiency; —    saw blade cooling system by air or water-air or oil-air; —    vibrating conveyor with/without trimming unit for offcuts management; —    predisposition for top loading/unloading by an external system directly on the machine table and/or on the machine preloading roller conveyor and/or on the machine lifting table. NOTE      base board is a support panel underlying the panel stack, to protect the panels from damages during transportation. The machines are designed for cutting panels consisting of: a) solid wood; b) material with similar physical characteristics to wood (see ISO19085‑1:2021, 2); c) gypsum boards, gypsum bounded fibreboards; d) composite materials, with core consisting of e.g. polyurethane or mineral material, laminated with light alloy; e) cardboard; f) foam board; g) matrix engineered mineral boards, silicate boards; h) polymer‐matrix composite materials and reinforced thermoplastic/thermoset/elastomeric materials; i) aluminium light alloy plates with a maximum thickness of 10 mm; j) composite boards made from the materials listed above. This document does not deal with hazards related to: —    specific features different from those listed above; —    the machining of panels with milling tools for grooving; —    powered unloading of panels; —    rear half of split pressure beam on the front cutting line; —    the combination of a single machine being used with any other machine (as part of a line). It is not applicable to: —    machines intended for use in potentiall

Read draft and comment View
prEN ISO 17186 Archived
Comment end date 2026-04-23
Leather - Physical and mechanical tests - Determination of surface coating thickness (ISO/DIS 17186:2026)

ISO 17186:2011 specifies a method for determining the thickness of the surface coating applied to leather when measured under zero compression. It is applicable to all types of leather.

View
prEN IEC 61010-2-032:2026 Public enquiry
Comment end date 2026-05-20
Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-032: Particular requirements for hand-held and hand-manipulated current sensors for electrical test and measurement
Read draft and comment View
EN 1999-1-2:2023/prA1 Public enquiry
Comment end date 2026-05-28
Eurocode 9 - Design of aluminium structures - Part 1-2: Structural fire design

1.1 Scope of EN 1999-1-2 (1) EN 1999-1-2 deals with the design of aluminium structures for the accidental situation of fire exposure and is intended to be used in conjunction with EN 1999-1-1, EN 1999-1-2, EN 1999-1-3, EN 1999-1-4 and EN 1999-1-5. This document only identifies differences from, or supplements to, normal temperature design. (2) EN 1999-1-2 applies to aluminium structures required to fulfil a load bearing function. (3) EN 1999-1-2 gives principles and application rules for the design of structures for specified requirements in respect of the aforementioned function and the levels of performance. (4) EN 1999-1-2 applies to structures, or parts of structures, that are within the scope of EN 1999 1 1 and are designed accordingly. (5) The methods given in EN 1999-1-2 are applicable to the following aluminium alloys: EN AW-3004 - H34 EN AW-5083 - O and H12 EN AW-6063 - T5 and T6 EN AW-5005 - O and H34 EN AW-5454 - O and H34 EN AW-6082 - T4 and T6 EN AW-5052 - H34 EN AW-6061 - T6 (6) The methods given in EN 1999-1-2 are applicable also to other aluminium alloy/tempers of EN 1999 1-1, if reliable material properties at elevated temperatures are available or the simplified assumptions in 5.2.1 are applied. 1.2 Assumptions (1) In addition to the general assumptions of EN 1990, the following assumptions apply: - the choice of the relevant design fire scenario is made by appropriate qualified and experienced personnel, or is given by the relevant national regulation. - any active and passive fire protection systems taken into account in the design will be adequately maintained. (2) EN 1999 is intended to be used in conjunction with: - European Standards for construction products relevant for aluminium structures - EN 1090-1, Execution of steel structures and aluminium structures - Part 1: Requirements for conformity assessment of structural components - EN 1090-3, Execution of steel structures and aluminium structures - Part 3: Technical requirements for aluminium structures

Read draft and comment View
prEN IEC 60730-2-3:2026 Public enquiry
Comment end date 2026-06-10
Automatic electrical controls for household and similar use - Part 2-3: Particular requirements for thermal protectors for ballasts for tubular fluorescent lamps
Read draft and comment View
prEN 18340 Public enquiry
Comment end date 2026-06-16
Accessibility of support services for products and services

This document specifies accessibility requirements on information provision and communication in support services. This includes general information about the products and services including information on their accessibility. This document provides requirements on an accessible support service designed so that information and communication can be accessed, understood and used. Support services include but are not limited to help desks, call centres, technical support, and training services. It applies to support services that are provided digitally or face to face. NOTE 1 Where relay services are referred to in this document, relay services are a means to communicate in the provision of support services. NOTE 2 It includes support services that are provided directly and those that have been outsourced. It is applicable for all organisations of all sizes and across all sectors.

Read draft and comment View
prEN IEC 63522-55:2026 Public enquiry
Comment end date 2026-06-24
Electrical relays - Tests and measurements - Part 55: Maximum load breaking capacity
Read draft and comment View
prEN ISO 21227-1 Public enquiry
Comment end date 2026-04-30
Paints and varnishes - Evaluation of defects on coated surfaces using digital image processing - Part 1: General guidance (ISO/DIS 21227-1:2026)

ISO 21227-1:2003 gives definitions for and provides guidance in the use of optical imaging systems for the quantitative characterization of defects on coated surfaces that occur after exposure in various test methods, e.g. stone chipping, weathering or cross-cut testing. One aim of ISO 21227 is to use optical imaging to reproduce the results of already existing methods for visual assessment. Additionally, optical imaging provides further information which can be used for a more detailed evaluation of coating defects. This part of ISO 21227 contains a general introduction in optical-imaging methods and definitions. The performance of individual test methods and requirements for precision are described in other parts of the standard.

Read draft and comment View
prEN 3240 Public enquiry
Comment end date 2026-05-19
Aerospace series - Nut, self-locking, clip, in heat resisting steel FE PA2601 (A286), uncoated - Classification: 1 100 MPa (at ambient temperature)/425 °C

This document specifies the characteristics of self-locking clip nuts in FE-PA2601 (A286) for aerospace applications. Classification: 1 100 MPa /425 °C

Read draft and comment View
EN 1998-1-1:2024/prA1 Public enquiry
Comment end date 2026-05-28
Eurocode 8 - Design of structures for earthquake resistance - Part 1-1: General rules and seismic action

1.1 Scope of EN 1998-1-1 (1) This document is applicable to the design and verification of buildings and other structures for earthquake resistance. It gives general rules relevant to all types of structures, except for structures belonging to consequence classes CC0 or CC4. NOTE For further details on consequence class CC4, see 4.2. (2) This document provides basic performance requirements and compliance criteria applicable to buildings and other structures for earthquake resistance. (3) This document gives rules for the representation of seismic actions and the description of the design seismic situations. NOTE Certain types of structures, dealt with in other parts of Eurocode 8, need supplementary rules which are given in those relevant Parts. (4) This document contains general methods for structural analysis and verification under seismic actions, including base-isolated structures and structures with distributed dissipative systems. (5) This document contains rules for modelling and verification of ultimate strengths and deformations. 1.2 Assumptions (1) The assumptions of EN 1990 apply to this document. (2) It is assumed that no change in the structure and in the masses carried by the structure takes place during the construction phase or during the subsequent life of the structure with respect to the design unless proper justification and verification is provided. This applies also to ancillary elements (see 3.1.2). Due to the specific nature of seismic response, this applies even in the case of changes that lead to an increase of the structural resistance. (3) The design documents are assumed to indicate the geometry, the detailing, and the properties of the materials of all structural members. If appropriate, the design documents are also assumed to include the properties of special devices to be used and the distances between structural and ancillary elements. The necessary quality control provisions are assumed to be specified. (4) Members of special structural importance requiring special checking during construction are assumed to be identified in the design documents and the verification methods to be used are assumed to be specified. (5) It is assumed that in the case of high seismic action class (4.1.1(4)), formal quality system plans, covering design, construction, and use, additional to the control procedures prescribed in the other relevant Eurocodes, are specified.

Read draft and comment View
prEN 300 392-12-16 V1.4.0 (2026-03) Public enquiry
Comment end date 2026-06-21
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 16: Pre-emptive Priority Call (PPC)
Read draft and comment View
prEN 4473 Public enquiry
Comment end date 2026-06-16
Aerospace series - Aluminium pigmented organic coatings for fasteners - Technical specification
Read draft and comment View
prEN 16914 Archived
Comment end date 2026-04-19
Aluminium and aluminium alloys - Hot-rolled armour plates in weldable aluminium alloy - Technical delivery conditions

This document specifies the technical delivery conditions for weldable aluminium alloy plates for armour applications with a nominal thickness between 10 mm and 70 mm for ARAL1 material and between 10 mm and 80 mm for ARAL2 material.

View
prEN 15189 Public enquiry
Comment end date 2026-04-30
Ductile iron pipes, fittings and accessories - External polyurethane coating for pipes - Requirements and test methods

This document specifies the requirements and test methods applicable to factory applied external polyurethane based coatings for heavy duty (see EN 545:2010, Clause D.3) corrosion protection of buried ductile iron pipes in accordance with EN 545, EN 598 and EN 969 for use at operating temperatures up to 50 °C. This document is not applicable to ductile iron pipes protected with zinc with a finishing layer of polyurethane. This document is not applicable to special activities on site such as tapping, clamping, etc., which could affect the corrosion protection properties of the polyurethane coating. NOTE These operations are usually specified in the laying instructions supplied by manufacturers of clamps, house connection saddles, etc. and any relevant user procedures.

Read draft and comment View
prEN 14541-1 Public enquiry
Comment end date 2026-05-21
Plastics pipes and fittings - Utilisation of thermoplastic materials in a circular economy - Part 1: Vocabulary

This document specifies the general terms and definitions relevant to the utilization of thermoplastics materials in a circular economy in pipes, fittings and ancillaries for both pressure and non-pressure piping systems. This document is intended to be used by specification writers in conjunction with CEN/TS 14541-2 [7] when preparing normative documents under the scope of CEN/TC 155.

Read draft and comment View
prEN IEC 61400-16:2026 Public enquiry
Comment end date 2026-06-03
Wind energy generation systems - Part 16: Standard format for sharing power curves and associated information
Read draft and comment View
prEN 1992-4 Public enquiry
Comment end date 2026-06-11
Eurocode 2 - Design of concrete structures - Part 4: Design of fastenings for use in concrete

(1) EN 1992-4 provides a design method for fastenings (connection of structural elements and non-structural elements to structural components), which are used to transmit actions to the concrete. NOTE 1 Additional rules for the transmission of the fastener loads within the concrete member to its supports are given in EN 1992 1 1:2004, 2.7 and Annex A of this EN. NOTE 2 Inserts embedded in precast concrete elements during production, under Factory Production Control (FPC) conditions and with the due reinforcement, intended for use only during transient situations for lifting and handling, are covered by CEN/TR 15728. (2) EN 1992-4 is intended for safety related applications in which the failure of fastenings can result in collapse or partial collapse of the structure, cause risk to human life or lead to significant economic loss. (3) The support of the fixture can be either statically determinate or statically indeterminate. Each support can consist of one fastener or a group of fasteners. (4) EN 1992-4 is valid for applications which fall within the scope of the EN 1992 series. In applications where special considerations apply, e.g. nuclear power plants or civil defence structures, modifications can be necessary. (5) EN 1992-4 does not cover the design of the fixture. NOTE Rules for the design of the fixture are given in the appropriate standards meeting the requirements on the fixture as given in EN 1992-4.

Read draft and comment View
prEN 319 412-5 V2.6.0 (2026-02) Archived
Comment end date 2026-04-19
Electronic Signatures and Trust Infrastructures (ESI); Certificate Profiles; Part 5: QCStatements
View
EN ISO 12759-4:2019/prA1 Public enquiry
Comment end date 2026-04-28
Fans - Efficiency classification for fans - Part 4: Driven fans at maximum operating speed - Amendment 1: Addition of Annex F providing an example of the use of efficiency classification and editorial changes (ISO 12759-4:2019/DAM 1:2026)
Read draft and comment View
prEN 17762 Public enquiry
Comment end date 2026-05-19
Inorganic fertilizers - Determination of the copper content in ammonium nitrate fertilizers of high nitrogen content

This document specifies a method for the determination of the copper content in ammonium nitrate fertilizers of high nitrogen content. This document is applicable to the fertilizing products blends where a blend is a mix of at least two of the following components: fertilizers, liming materials, soil improvers, growing media, inhibitors, plant biostimulants, and where the following category: inorganic fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If inorganic fertilizer is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.

Read draft and comment View
prEN 10219-1 Public enquiry
Comment end date 2026-05-28
Cold formed welded steel structural hollow sections - Part 1: Technical delivery conditions

This document specifies the technical delivery conditions for electric welded and submerged arc welded cold formed structural steel hollow sections of circular, square, rectangular or elliptical forms and applies to structural hollow sections formed cold without subsequent heat treatment other than the heat treatment of the weld line. NOTE 1 The requirements for tolerances, dimensions and sectional properties in EN 10219-2. NOTE 2 The provisions that apply under the Construction Products Regulations (CPR) are specified in EN 10380. NOTE 3 The attention of users is drawn to the fact that whilst cold formed grades in this document can have equivalent mechanical properties to hot-finished grades in EN 10210-1 the sectional properties of square and rectangular hollow sections in EN 10219-2 and EN 10210-2 are not equivalent. NOTE 4 A range of steel grades is specified in this document and the user should select the grade most appropriate to the intended use and service conditions. The grades and mechanical properties, but not the final supply condition of cold formed hollow sections are generally comparable with those in EN 10025-2, EN 10025-3, EN 10025-4, EN 10025-5, EN 10025-6, EN 10149-2 and EN 10149-3.

Read draft and comment View
EN 50615:2015/prA1:2026 Public enquiry
Comment end date 2026-06-24
Household and similar electrical appliances - Safety - Particular requirements for devices for fire prevention and suppression for electric hobs, and gas hobs having automatic burner control systems (cooktops)

This European standard deals with the safety of electric devices used for detection, prevention and suppression of fire originated: - from a cooking process, or - from flammable material left on the hob. NOTE The provisions of this document, duly adapted to the specific installation and conditions of use, may be taken into consideration as guidance also for the protection from fire originated from the use of portable cooking appliances or from grills in the oven cavity. The devices covered by this European Standard may operate by interaction with, or integration of, other devices such as smoke detectors, fire detectors, motion detectors, CO detectors and fire extinguishers that are covered by their specific applicable standards.

Read draft and comment View
prEN IEC 60601-2-92:2026 Archived
Comment end date 2026-04-22
Medical electrical equipment - Part 2-92: Particular requirements for the basic safety and essential performance of magnetic resonance guided radiotherapy equipment for use with external beam equipment
View
prEN ISO 10364 Public enquiry
Comment end date 2026-05-07
Structural adhesives - Determination of the pot life and working life of multi-component adhesives (ISO/DIS 10364:2026)

This document specifies methods for determining the pot life of multi-part adhesives, in order to be able to determine whether the pot life conforms to the minimum specified working life required of an adhesive. The different methods described in this document to measure the property do not necessarily provide identical results. The test methods described are suitable for assessing all multi–part adhesives, and especially epoxy based and polyurethane based adhesives, but they are not suitable for some acrylic-based adhesives. NOTE 1       Some of the methods described in this document can also be suitable for determination of working life of one-part adhesives that react to humidity (e.g. PUR prepolymers). NOTE 2       This document can also be used for assessing non-structural adhesives.

Read draft and comment View
prEN ISO 22125-1 Public enquiry
Comment end date 2026-05-25
Water quality - Technetium-99- Part 1: Test method using liquid scintillation counting (ISO/DIS 22125-1:2026)

This document specifies a method for the measurement of 99Tc in all types of waters by liquid scintillation counting (LSC). The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. A filtration of the test sample is necessary. The detection limit depends on the sample volume and the instrument used. The method described in this document, using currently available LSC instruments, has a detection limit of approximately 5 Bq·kg−1 to 20 Bq·kg−1, which is lower than the WHO criteria for safe consumption of drinking water (100 Bq l−1)[3]. These values can be achieved with a counting time of 30 min for a sample volume varying between 14 ml to 40 ml. The method presented in this document is not intended for the determination of ultra-trace amount of 99Tc. The activity concentration values in this document are expressed by sample mass unit instead of sample volume unit as it is usually the case in similar standards. The reason is that 99Tc is measured in various matrix types such as fresh water or sea water, which have significant differences in density. The activity concentration values can be easily converted to sample volume unit by measuring the sample volume. However, it increases the uncertainty on the activity concentration result. The method described in this document is applicable in the event of an emergency situation, but not if 99mTc is present at quantities that could cause interference and not if 99mTc is used as a recovery tracer. The analysis of Tc adsorbed to suspended matter is not covered by this method. It is the user's responsibility to ensure the validity of this test method for the water samples tested.

Read draft and comment View
Total records found: 256
arrow-prev 1 2 3 4 … 11 arrow-next

Quick filters

Organisation
CENELEC Europos elektrotechnikos standartizacijos komitetas (78) ISO Tarptautinė standartizacijos organizacija (8) CEN Europos standartizacijos komitetas (156) ETSI Europos telekomunikacijų standartų institutas (13) LST Lietuvos standartizacijos departamentas (1)
Technical Committee
TK 1 Electronics (8) TK 4 Information technology (1) TK 5 Electrical engineering (25) TK 12 Motor - roads (1) TK 13 Agricultural engineering (7) TK 18 Telecommunications (13) TK 19 Concrete and reinforced concrete (2) TK 21 Textiles and personal protective equipment (2) TK 22 Fire safety (2) TK 23 Ceramic tiles, masonry and natural stones (2) TK 28 Gas systems (5) TK 29 Water supply (2) TK 32 Health (13) TK 33 Fishery (2) TK 34 Metrology (1) TK 35 Safety of machinery (2) TK 36 Environmental protection (8) TK 38 Building constructions (12) TK 40 Petroleuml, petroleum products, lubricants and alternative fuels (4) TK 41 Welding (1) TK 42 Packaging (1) TK 43 Railway traffic (2) TK 45 Electric power (19) TK 47 Information and documentation (1) TK 49 Metallic materials (6) TK 50 Heating and Ventilation Systems (2) TK 51 Food analysis- Horizontal methods (1) TK 57 Fertilizers (11) TK 59 Geotechnics (2) TK 63 Gas cylinders and cryogenic vessels (4) TK 66 Non-destructive testing (2) TK 68 Plastics (2) TK 70 Pulp, paper, board, adhesives (6) TK 76 Explosive atmospheres (2) TK 77 Lifts (1) TK 79 IT security techniques (1) TK 82 Safety of trackless overground vehicles (1) TK 84 Chimneys and solid fuel burning appliances (2) TK 87 Biotechnology (1) TK 88 Building Information Modelling (BIM) (3) TK 89 Risk management and organizational governance (1) TK 91 Asset management and technical maintenance (2) TK 99 Health Informatics (1)
ICS
Fizikinės dirvožemio savybės (1) Adhesives (1) Agricultural machines and equipment in general (2) Aircraft and space vehicles in general (1) Alkaline secondary cells and batteries (2) Aluminium products (4) Aluminium structures (3) Application of information technology in general (1) Automatic controls for household use (2) Binders. Sealing materials (1) Biobased products (1) Biology. Botany. Zoology (1) Body care equipment (1) Bolts, screws, studs (1) Bridge construction (1) Cement. Gypsum. Lime. Mortar (1) Check valves (1) Chemical laboratories. Laboratory equipment (3) Chimneys, shafts, ducts (1) Cleaning appliances (3) Concrete and concrete products (1) Connecting devices (1) Cooking ranges, working tables, ovens and similar appliances (2) Cookware, cutlery and flatware (1) Corrosion of metals (1) Dental equipment (1) Dental instruments (2) Dental materials (1) Dentistry in general (1) Dishwashers (1) Domestic refrigerating appliances (2) Domestic safety (10) Earthworks. Excavations. Foundation construction. Underground works (1) Electric road vehicles (1) Electrical and electronic equipment (1) Electrical and electronic testing (1) Electrical apparatus for explosive atmospheres (2) Electrical insulation in general (1) Electricity supply systems (1) Electronics (Vocabularies) (1) Ergonomics (1) Examination of physical properties of water (1) Explosives. Pyrotechnics and fireworks (1) Extraction and processing of petroleum and natural gas (2) Fasteners in general (1) Fertilizers (11) Fibre optic interconnecting devices (2) Fibres and cables (2) Fire protection (1) Floor coverings (2) Gas cylinders (2) Gas supply systems (1) Gases for industrial application (1) General methods of tests and analysis for food products (2) General purpose pallets (1) Geometrical Product Specification (GPS) (1) Governance and ethics (1) Harvesting equipment (1) Industrial process measurement and control (1) Information technology (IT) in general (1) Installations and equipment for waste disposal and treatment (1) Iron and steel forgings (1) Iron and steel products in general (1) IT applications in building and construction industry (3) IT applications in health care technology (1) IT applications in transport (1) IT Security (3) Laboratory medicine in general (1) Lamps in general (2) Laundry appliances (1) Leather and furs (3) Lifts. Escalators (1) Liquid fuels (1) Luminaires (1) Maintenance services. Facilities management (1) Materials and components for railway engineering (1) Materials for aerospace construction in general (1) Measurement of electrical and magnetic quantities (1) Measurement of volume, mass, density, viscosity (1) Mechanical structures for electronic equipment (2) Mechanical testing of metals (1) Medical equipment in general (1) Medical microbiology (1) Metallurgy (Vocabularies) (1) Microbiology of water (1) Mineral materials and products (2) Navigation and control equipment (1) Noise emitted by machines and equipment (2) Non-destructive testing (2) Nuts (2) Organic coatings (1) Other construction materials (4) Other equipment related to power transmission and distribution networks (3) Other products of the chemical industry (1) Other semiconductor devices (1) Paints and varnishes (3) Paper and board (1) Passenger and cabin equipmen (1) Petroleum products in general (3) Pipelines and its parts for external sewage systems (1) Plastics in general (1) Plastics pipes and fittings for non fluid use (1) Pollution, pollution control and conservation (4) Power transmission and distribution lines (3) Power transmission and distribution networks in general (1) Product life-cycles (1) Products of the chemical industry (1) Radiation measurements (2) Radiation protection (1) Railway rolling stock in general (1) Raw skins, hides and pelts (1) Rectifiers. Converters. Stabilized power supply (1) Recycling (1) Respiratory protective devices (1) Screw threads (1) Seismic and vibration protection (1) Services in general (1) Solid fuel heaters (1) Steel pipes and tubes for specific use (2) Steel structures (1) Switches (1) Syringes, needles and catheters (3) Technical aspects (6) TELECOMMUNICATIONS. AUDIO AND VIDEO ENGINEERING (13) Telecontrol. Telemetering (7) Thermistors (1) Trailing stock (1) Ventilators. Fans. Air-conditioners (1) Walls. Partitions. Façades (1) Water heating equipment (1) Welding equipment (2) Woodworking machines (2) Workplace atmospheres (1) Writing and transliteration (1)