one through five

one through five, Total:187 items.

The international standard classification for "one through five" includes: Wires .

The Chinese standard classification for "one through five" includes: Bare wire , Clamping fixtures .

Group Standards of the People's Republic of China

T/MIA 0001-2021 System design standard for wearable personal comprehensive perception information system
T/JXAS 031-2024 Specification for individualized multimodal sequential therapy for cancer pain

Liaoning Provincial Standard of the People's Republic of China

DB21/T 3607-2022 Technical regulations for the control of Acanthopanax psyllid

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 30550-2014 Concentric Lay Stranded Overhead Electrical Conductors Containing One or More Gap(s)

Henan Provincial Standard of the People's Republic of China

DB4102/T 1-2018 "Six Ones" Government Service Standards

Military Standard of the People's Republic of China-General Armament Department

GJB 3664A-2021 Physiological evaluation method of personal protective equipment Wearing time limit of anti-virus clothing (clothing)
GJB 3664-1999 Physiological evaluation method of personal protective equipment Wearing time limit of protective clothing

Professional Standard - Aviation

HB 547-1989 Diplopore Fork with One Holding Piece
HB 547-1974 with one clamping piece double hole fork

未注明发布机构

DIN 4759-1 E:2017-07 Process heat installations for more than one kind of energy; one boiler for solid fuel and one for oil or gas and only one chimney; safety requirements and tests

Anhui Provincial Standard of the People's Republic of China

DB34/T 4232-2022 "Six Ones" Service Standards for Enterprise Start-up

IEC - International Electrotechnical Commission

TS 62994-2019 Photovoltaic (PV) modules through the life cycle – Environmental health and safety (EH&S) risk assessment – General principles and nomenclature (Edition 1.0)

FI-SFS

SFS 8169-1987 In case of interpretation disputes the Finnish text applies

SCC

AWWA SOURCES55615 Water Conservation One Block, One Neighborhood at a Time
AWWA ACE94249 Five Steps Toward a Claim-Free Project
AWWA JTMGT69625 EMS Development: Five Keys to a Successful Outcome
CAN/CGSB 12.13-M91-1991 Patterned glass
Doc 1629-1970 Procedures for inter-conversion of values from one system of units to another
BS PP 7304:1991 Geometrical tolerancing. An introduction
AWWA REUSE52137 A Tale of Two Cities...And a County In Nevada
MIL MIL-T-24558/30-1981 TERMINAL BOXES, CONNECTION, SUBMERSIBLE (15-FOOT), 500 VOLTS, THREE-PHASE SYMBOL 576.1 - TWO CKTS FOR 150 MCM CABLE, ONE CKT FOR 200 MCM CABLE AND ONE CKT FOR 400 MCM CABLE SYMBOL 577.1 - ONE CKT FOR 150 MCM CABLE, ONE CKT FOR 200 MCM CABLE AND TWO CKTS F
MIL MIL-DTL-24558/30B-2011 TERMINAL BOXES, CONNECTION, SUBMERSIBLE (15-FOOT), 500 VOLTS, THREE-PHASE SYMBOL 576.1 - TWO CKTS FOR 150 MCM CABLE, ONE CKT FOR 200 MCM CABLE AND ONE CKT FOR 400 MCM CABLE SYMBOL 577.1 - ONE CKT FOR 150 MCM CABLE, ONE CKT FOR 200 MCM CABLE AND TWO CKT...
MIL MIL-DTL-24558/30A-2004 TERMINAL BOXES, CONNECTION, SUBMERSIBLE (15-FOOT), 500 VOLTS, THREE-PHASE SYMBOL 576.1 - TWO CKTS FOR 150 MCM CABLE, ONE CKT FOR 200 MCM CABLE AND ONE CKT FOR 400 MCM CABLE SYMBOL 577.1 - ONE CKT FOR 150 MCM CABLE, ONE CKT FOR 200 MCM CABLE AND TWO CKT...
MIL MIL-DTL-43101B-2013 Filing Cabinet, Letter Size Design, Steel, OD, One Drawer High, One Drawer Wide
CEI EN 62420:2009 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
AWWA WQTC71443 Ground Water Rule Implementation: It's a Challenge for Everyone
DANSK DS/EN 62420:2008 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
AENOR UNE-EN 62420:2009 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
CEI 1:1997 Glossary - 1st List of terms
10/30219399 DC BS EN 15296. Solid biofuels. Conversion of analytical results from one basis to another
06/30156083 DC BS EN 62420. Concentric lay stranded overhead electrical conductors containing one or gap(s)
AWWA WQTC60734 Formulation and Decay of THMs and HAAs in Five Full-Scale Distribution Systems
MIL MIL-F-43101A-1967 FILING CABINET, LETTER SIZE DESIGN, STEEL, OD, ONE DRAWER HIGH, ONE DRAWER WIDE (SUPERSEDING MIL-F-43101)
NS 8435:2011 General conditions of contract for personal assistance
IEC 60099-1A:1965 First supplement Replaced by IEC 99-5
IEC 60186A:1970 First supplement to Publication 186 (1969).
AWWA ACE93090 Water Conservation--One City's Approach
NS-EN 14404-3:2024 Personal protective equipment - Knee protectors for work in the kneeling position - Part 3: Requirements for the individual combination of knee pads and garments (type 2)
AWWA SRC57794 We Have a Plan, So Show Me the Money
AWWA ACE61753 Asset Valuation Strategies — A Practical Example
AS 2886:1986 Voltage measurement - Sphere-gap method (one sphere earthed)

RU-GOST R

GOST 18822-1980 Bolsters with five apertures. Design and dimensions
GOST R 55113-2012 Solid biofuels. Conversion of analytical results from one basis to another

HU-MSZT

MSZ 11025/4-1987 Resistance can be measured one by one in a resistor network
MSZ 18232-1953 Furniture sets, tables with one or two drawers
MSZ 6026-2.lap-1958 One tube-shaped template temperature measuring device is on the outside and the other is on the inside
MSZ 8905-1965 office furniture. Desk with one or two cabinets
MSZ 5789-1962 The main valve for transferring gas. One is internal and the other is external
MSZ 6016-2.lap-1958 Tube type temperature measurement equipment. One of them flows to the left and the other flows to the right
MSZ 10855-1965 The soldering iron warms up. a stove
MSZ 6004-2.lap-1958 Tube type temperature measurement equipment. One of them is external and the other flows internally
MSZ 5790-1979 Corner gas main faucet, one tail internal and the other external flow
MSZ 6012-2.lap-1958 Tubular Template Temperature Measuring Equipment Product No. 90 One external, the other internal flow
MSZ 18233-1953 one. Painted cupboard with double doors
MSZ 2216-1979 Wedge pad, one pan wood screw
MSZ 6025-2.lap-1958 Integrated connection of tube-type steel temperature measurement equipment. one of which is external and the other is internally conveyed
MNOSZ 11211-1952 Industrial thermometer glassware, large straight Omero tube with a protective device, a thread
MSZ 18554-1965 Coal stored in an industrial company

Association Francaise de Normalisation

NF X06-024:1993 Sequential sampling plans for inspection by attributes.
NF EN 62420:2011 Conducteurs pour lignes aériennes câblés en couches concentriques comprenant un ou plusieurs intervalle(s)
NF X34-116:2011 Solid biofuels - Conversion of analytical results from one basis to another.
NF C34-420*NF EN 62420:2011 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
FD V09-503:2022 Analyse sensorielle - Mesure des performances d'un jury, ou plusieurs jurys, réalisant des profils sensoriels quantatifs

American National Standards Institute （ANSI)

ANSI/AIM-BC2-1995 Uniform Symbology Specification - Interleaved 2-Of-5
ANSI/TIA/EIA 455-59-A-2000 Measurement of Fiber Point Defects Using an OTDR

RO-ASRO

STAS 7139/10-1980 FIVE ELEMENTS DEMOUN- TABLE RI.MS Dimensions
STAS 6679/14-1985 Metal cutt ing machinc-tools METHODS OF TESTING THE QUARENNESS OF AN AXIS TO HE FRONT SURFACE
STAS 6679/11-1985 Metal-cutting machinc-tools HECKING METHOD SQUARE- ESS OF A MOVING ELEMENT IRECTION OF MOVEENT TO AN XIS ORPLANE
STAS 9859-1974 ELECTRONIC. COMPONENTS Mcasurcmcnt of the dimensions of a cylindrical component having two axial tcrminations

Defense Logistics Agency

DLA A-A-55426 C-2007 FUSEHOLDER, BLOCK, CLASS H, 60 AMPERE, 600 V AC, ONE, TWO, AND THREE POLE
DLA A-A-55429 C-2007 FUSEHOLDER, BLOCK, CLASS H, 100 AMPERE, 600 V AC, ONE, TWO, AND THREE POLE
DLA A-A-55427 C-2007 FUSEHOLDER, BLOCK, CLASS H, 60 AMPERE, 250 V AC, ONE, TWO, AND THREE POLE
DLA A-A-55168 C-2007 FUSEHOLDER, BLOCK, CLASS H, 30 AMPERE, 250 V AC, ONE, TWO, AND THREE POLE
DLA A-A-55428 C-2007 FUSEHOLDER, BLOCK, CLASS H, 30 AMPERE, 600 V AC, ONE, TWO, AND THREE POLE
DLA MS35254 REV C-2009 BRACE, CORNER, BOX 3 QUARTER-ROUND FLANGES, 3 MOUNTING HOLES
DLA A-A-59653 A-2006 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, ONE DOUBLE CONE, TWO SINGLE CUPS (TYPES TDI AND TDIS)
DLA MIL-DTL-24558/30 B-2011 TERMINAL BOXES, CONNECTION, SUBMERSIBLE (15-FOOT), 500 VOLTS, THREE-PHASE, SYMBOL NO. 576.1 - TWO CIRCUITS FOR 150 MCM CABLE, ONE CIRCUIT FOR 200 MCM CABLE AND ONE CIRCUIT FOR 400 MCM CABLE, SYMBOL NO. 577.1 - ONE CIRCUIT FOR 150 MCM CABLE, ONE CIRCUIT F
DLA A-A-59655 A-2006 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, STEEP ANGLE, TWO SINGLE CONES, ONE DOUBLE CUP (TYPE TDOS)
DLA A-A-59655 A VALID NOTICE 1-2011 Bearings, Roller, Tapered, Double Row, Steep Angle, Two Single Cones, One Double Cup (Type TDOS)
DLA A-A-59654 A-2006 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, NORMAL ANGLE, TWO SINGLE CONES, ONE DOUBLE CUP (TYPE TDO)
DLA A-A-59654 A VALID NOTICE 1-2011 Bearings, Roller, Tapered, Double Row, Normal Angle, Two Single Cones, One Double Cup (Type TDO)
DLA A-A-59653 A VALID NOTICE 1-2011 Bearings, Roller, Tapered, Double Row, One Double Cone, Two Single Cups (Types TDI and TDIS)
DLA A-A-59653 B-2011 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, ONE DOUBLE CONE, TWO SINGLE CUPS (TYPES TDI AND TDIS)
DLA A-A-59655 B-2011 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, STEEP ANGLE, TWO SINGLE CONES, ONE DOUBLE CUP (TYPE TDOS)
DLA MS35257 REV C-2009 BRACE, CORNER, BOX, LARGE, 2 QUARTER-ELLIPSE FLANGES, 2 MOUNTING HOLES
DLA A-A-59654 B-2011 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, NORMAL ANGLE, TWO SINGLE CONES, ONE DOUBLE CUP (TYPE TDO)
DLA A-A-59657 A VALID NOTICE 1-2011 Bearings, Roller, Tapered, Double Row, Steep Angle, Two Single Cones, One Double Cup, Nonadjustable (Type TNAS)
DLA A-A-59657 B-2011 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, STEEP ANGLE, TWO SINGLE CONES, ONE DOUBLE CUP, NONADJUSTABLE (TYPE TNAS)
DLA A-A-59657 A-2006 BEARINGS, ROLLER, TAPERED, DOUBLE ROW, STEEP ANGLE, TWO SINGLE CONES, ONE DOUBLE CUP, NONADJUSTABLE (TYPE TNAS)

Japanese Industrial Standards Committee (JISC)

JIS Z 9056:1979 Significance test of equality of the two population variances (one-sided)
JIS Z 9046:1965 Significance test of difference between the two population means (standard deviations known, one-sided)
JIS Z 9048:1979 Significance test of difference between the two population means (standard deviations unknown, one-sided)

PL-PKN

PN B94409-1971 Building finish hardwares Two bolt mortise locks for gates
PN M55551-21-1986 Metal cutting machin? tools Methods of measurement of squareness of a motion to a motion
PN M60280-1965 One—speed bench grinder

CZ-CSN

CSN 22 0001-2294-1961 22 breakdown tools and number levels: metal scraper
CSN 22 0001-2216-1961 22 breakdown tools and numbering levels: hole expansion adjustment tool
CSN 22 4551-1955 Sanding wheel with a large opening

Korean Agency for Technology and Standards (KATS)

KS P ISO 11334-4-2007(2017) Walking aids manipulated by one arm－Part 4：Walking sticks with three or more legs
KS G 5115-1979 A gas cock
KS B 0703-2002(2017) Method of test for dynamic vibration of two - for - one twister
KS V 2419-1985 A conical funnel
KS C IEC 62420-2019 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
KS B ISO 10889-5-2005(2010) Tool holders with cylindrical shank－Part 5：Type D with more than one rectangular seat
KS C IEC 62420-2014(2019) Concentric lay stranded overhead electrical conductors containing one or more gap(s)
KS C 1222-1989(2009) Clinical electronic spirometers
KS C 2514-1992(2012) Electrical Resistance wires, Ribbons and Sheets for General Use
KS E 3133-1990(2011) Tungsten carbide bits and bit blanks for core drills
KS F 4752-2004(2009) Components for metal roof-decks

US-FCR

FCR COE ER 350-1-420-1995 FIVE-YEAR INDIVIDUAL DEVELOPMENT PLAN (IDP) AND DEVELOPMENT ASSIGNMENTS
FCR 21 CFR PART 880-2013 GENERAL HOSPITAL AND PERSONAL USE DEVICES
FCR 21 CFR PART 880-2015 GENERAL HOSPITAL AND PERSONAL USE DEVICES

IETF - Internet Engineering Task Force

RFC 5004-2007 Avoid BGP Best Path Transitions from One External to Another

International Organization for Standardization (ISO)

ISO 16993:2015 Solid biofuels — Conversion of analytical results from one basis to another
ISO 16993:2016 Solid biofuels - Conversion of analytical results from one basis to another
ISO 3655:1986 Acceptance conditions for vertical turning and boring lathes with one or two columns and a single fixed or movable table — General introduction and testing of the accuracy
ISO/TR 24679-4:2017 Fire safety engineering — Performance of structures in fire — Part 4: Example of a fifteen-storey steel-framed office building

North Atlantic Treaty Organization Standards Agency

STANAG 4021-1983 SPECIFICATION FOR CE (TETRYL) FOR DELIVERIES FROM ONE NATO NATION TO ANOTHER
STANAG 4299-1996 SPECIFICATION AMMONIUM PERCHLORATE (NH4Cl04) FOR DELIVERIES FROM ONE NATO NATION TO ANOTHER
STANAG 4025-1991 SPECIFICATION FOR TNT (TOLITE) FOR DELIVERIES FROM ONE NATO NATION TO ANOTHER
STANAG 4022-1983 SPECIFICATION FOR RDX (HEXOGENE) FOR DELIVERIES FROM ONE NATO NATION TO ANOTHER
STANAG 4230-2002 SPECIFICATION FOR HNS (HEXANITROSTILBENE) EXPLOSIVE FOR DELIVERIES FROM ONE NATO NATION TO ANOTHER
STANAG 4284-1996 HMX (OCTOGENE) PHYSICAL AND CHEMICAL REQUIREMENTS, SPECIFICATION FOR DELIVERIES FROM ONE NATO NATION TO ANOTHER
STANAG 4543-2002 EXPLOSIVES, SPECIFICATION FOR NTO (3-NITRO-1, 2, 4-TRIAZOL-5-ONE) FOR DELIVERIES FROM ONE NATO NATION TO ANOTHER

ITU-T - International Telecommunication Union/ITU Telcommunication Sector

ITU-T J.52 FRENCH-1994 DIGITAL TRANSMISSION OF HIGH-QUALITY SOUND-PROGRAMME SIGNALS USING ONE@ TWO OR THREE 64 kbit/s CHANNELS PER MONO SIGNAL (AND UP TO SIX PER STEREO SIGNAL)
ITU-T J.52 SPANISH-1994 TRANSMISI?N DIGITAL DE SE?ALES DE PROGRAMAS SONOROS DE ALTA CALIDAD UTILIZANDO UNO@ DOS O TRES CANALES A 64 kbit/s POR SE?AL MONOF?NICA (Y HASTA SEIS POR SE?AL ESTEREOF?NICA)
ITU-T H.846-2017 Conformance of ITU-T H.810 personal health system: Personal Health Devices interface Part 6: Personal Health Gateway (Study Group 16)
ITU-T H.846-2018 Conformance of ITU-T H.810 personal health system: Personal Health Devices interface Part 6: Personal Health Gateway (Study Group 16)
ITU-T H.846-2019 Conformance of ITU-T H.810 personal health system: Personal Health Devices interface Part 6: Personal Health Gateway (Study Group 16)

European Committee for Standardization (CEN)

EN ISO 16993:2015 Solid biofuels - Conversion of analytical results from one basis to another (ISO 16993:2015)
EN ISO 16993:2016 Solid biofuels - Conversion of analytical results from one basis to another

International Telecommunication Union (ITU)

ITU-T D.607R-2021 One network area roaming
ITU-R S.744-1992 Orbit/Spectrum Improvement Measures for Satellite Networks Having More Than One Service in One or More Frequency Bands - Section 4D2 - Coordination Methods
ITU-R S.744 FRENCH-1992 Orbit/Spectrum Improvement Measures for Satellite Networks Having More Than One Service in One or More Frequency Bands
ITU-R S.744 SPANISH-1992 Orbit/Spectrum Improvement Measures for Satellite Networks Having More Than One Service in One or More Frequency Bands

Association of German Mechanical Engineers

DVS 0404-1971 Welding with two arcs at one workpiece

GB-REG

REG 36 CFR PART 1231-2011 TRANSFER OF RECORDS FROM THE CUSTODY OF ONE EXECUTIVE AGENCY TO ANOTHER

SE-SIS

SIS SS 78 02 47-1980 Shipbuilding — Lugs with one hole
SIS 62 37 02-1965-1 who as the holder offive shares of One- hundred (100) Sw. kronor each is a joint owner of Aktiebolaget Inventom for a total sum of

GSO

GSO ISO 162:2015 Cinematography -- Head gaps and sound records for three-, four-, or six-track magnetic sound records on 35 mm and single-track on 17,5 mm motion-picture film containing no picture -- Positions and width dimensions
OS GSO IEC 62420:2014 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
BH GSO IEC 62420:2015 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
GSO IEC 62420:2014 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
GSO ISO 1990-1:2015 Fruits -- Nomenclature -- First list
GSO ISO 1991-1:2015 Vegetables -- Nomenclature -- First list
OS GSO ISO 1990-1:2015 Fruits -- Nomenclature -- First list
BH GSO ISO 1990-1:2016 Fruits -- Nomenclature -- First list

British Standards Institution (BSI)

BS EN 15296:2011 Solid biofuels. Conversion of analytical results from one basis to another
BS EN ISO 16993:2015 Solid biofuels. Conversion of analytical results from one basis to another
BS EN 14404-2:2024 Personal protective equipment. Knee protectors for work in the kneeling position - Requirements for wearable knee protectors (type 1)

AENOR

UNE-EN 62420:2009 Concentric lay stranded overhead electrical conductors containing one or more gap(s)
UNE 15322:1992 ACCEPTANCE CONDITIONS FOR VERTICAL TURNING AND BORING LATHES WITH ONE OR TWO COLUMNS AND A SINGLE FIXED OR MOVABLE TABLE. GENERAL INTRODUCTION AND TESTING OF THE ACCURACY.

European Committee for Electrotechnical Standardization（CENELEC）

EN 62420:2008 Concentric lay stranded overhead electrical conductors containing one or more gap(s)

American Society of Quality Control （ASQC)

ASQ S3-2012 An attribute chain sampling program

Institute of Electrical and Electronics Engineers (IEEE)

SMPTE ST 86:2005 ST 86:2005 - SMPTE Standard - For Motion-Picture Film — Magnetic Audio Records — Two, Three, Four and Six Records on 35-mm and One Record on 17.5-mm Magnetic Film

Danish Standards Foundation

DS/EN 62420:2008 Concentric lay stranded overhead electrical conductors containing one or more gap(s)

European Association of Aerospace Industries

AECMA PREN 3203-001-1990 Aerospace Series Electromagetic Relays 5 A Plug-In Type, Two and Four Pole Technical Specification

NATO - North Atlantic Treaty Organization

STANAG 4023-2001 Specification for Penthrite (PETN) for Deliveries from One NATO Nation to Another (ED 4)
STANAG 4023-1962 Specification for PETN (Penthrite) for Deliveries from One NATO Nation to Another (ED 2 AMD 1; To obtain please contact your national Defense Standardization Office or the NATO Standardization Office website: http:/ so.nato.int so@ Phone: +32 (0)2 – 707 5
STANAG 4023-1992 Specification for PETN (Penthrite) for Deliveries from One NATO Nation to Another (ED 3 AMD 0; To obtain please contact your national Defense Standardization Office or the NATO Standardization Office website: http:/ so.nato.int so@ Phone: +32 (0)2 – 707 5

SAE - SAE International

SAE R-203-1997 The Automobile: A Century of Progress
SAE R-281-2000 The First Century of the Detroit Auto Show

European Telecommunications Standards Institute (ETSI)

ETSI ETR 083-1993 Universal Personal Telecommunication (UPT); General UPT Security Architecture

Lithuanian Standards Office

LST EN 62420-2008 Concentric lay stranded overhead electrical conductors containing one or more gap(s) (IEC 62420:2008)

Standard Association of Australia （SAA）

AS 4758.1:2008/Amdt 1:2009 General Requirements for Personal Flotation Devices
AS 4758.1:2008 General Requirements for Personal Flotation Devices

WRC - Welding Research Council

BULLETIN 72-1961 THERMAL FATIGUE – A CRITICAL REVIEW

Aerospace Industries Association/ANSI Aerospace Standards

AIA/NAS NASM20067-2015 KEY, MACHINE, SQUARE IN CROSS SECTION, ONE END SQUARE, OTHER END ROUND (Rev 2)
AIA/NAS NASM20067-2010 KEY, MACHINE, SQUARE IN CROSS SECTION, ONE END SQUARE, OTHER END ROUND (Rev 1)

U.S. Military Regulations and Norms

ARMY A-A-52524/11 VALID NOTICE 3-2009 Seal, Plain Encased: One Felt, Plus One Leather or Synthetic Elastomer Sealing Member Spring Loaded

CEPT - Conference Europeenne des Administrations des Postes et des Telecommunications

CEPT T/R 21-01-1967 Libre Circulation D'Un Pays A L'Autre Des Abonnes Au Service Radioelectrique Europeen D'Appel

AT-ON

ONORM S 1205-1998 Minimum wall thickness of barreis for small arms - Construction with one or more barreis

ES-AENOR

UNE 7 045 Determination of a range of porosity
UNE 7 016 Determination of a range retraction limit

(U.S.) Telecommunications Industries Association

TIA-5022.010-2015 MQTT Protocol Binding (one M2M TS-0010-v1.0.1)

NO-SN

NS 8435-2011 General conditions of contract for personal assistance

U.S. Air Force

AIR FORCE MIL-DTL-6645 J-2001 PARACHUTES, PERSONNEL, GENERAL SPECIFICATION FOR

German Institute for Standardization

DIN 4759-1:1986 Process heat installations for more than one kind of energy; one boiler for solid fuel and one for oil or gas and only one chimney; safety requirements and tests