Sign In |Help & Support
HOMECHINA STANDARDSICS CLASSIFICATIONINDUSTRY CLASSIFICATIONCHINESE CLASSIFICATIONCART(0)
ALL SECTORS
  • ALL SECTORS
  • GB(National Standard)
  • CB(Shipping)
  • CECS(Engineering Construction)
  • CJ(Urban Construction)
  • CY(News and Publication)
  • DB(Provincial Standard)
  • DL(Electricity & Power)
  • DZ(Geology & Mineralogy)
  • FZ(Spinning & Textile)
  • GA(Public Security)
  • HB(Aviation)
  • HG(Chemical Industry)
  • HJ(Environmental Protection)
  • JB(Machinery)
  • JC(Building Materials)
  • JG(Building & Construction)
  • JJ(Metering)
  • JT(Highway & Transportation)
  • LY(Forestry)
  • MT(Coal)
  • NB(Energy)
  • NY(Agriculture)
  • QB(Light Industry)
  • QC(Automobile & Vehicle)
  • QJ(Aerospace)
  • SH(Petrochemical)
  • SJ(Electronics)
  • SL(Water Resources)
  • SN(Commodity Inspection)
  • SY(Oil & Gas)
  • TB(Railway & Train)
  • YB(Ferrous Metallurgy)
  • YC(Tobacco)
  • YD(Telecommunication)
  • YY(Medical Device)
Database: 365,228(8 Aug 2026)
  1. HOME
  2. Standards for Poor orifice

Poor orifice

Poor orifice, Total:139 items.

The international standard classification for "Poor orifice" includes: Limits and fits , Equipment for processing of minerals , Electricity. Magnetism. Electrical and magnetic measurements , Hand-operated tools , Agricultural machines, implements and equipment .

The Chinese standard classification for "Poor orifice" includes: Basic standards and general methods , Sieving, Sieve Plate and Sieve Screen , Hydrology and water conservancy instrument , Hand tool , Combination grippers , Moulds , Fasteners , Screening equipment , Saw timber, artificial board machinery and tools .

国家能源局

  • NB/T 20572-2019 Technical guideline for restriction orifice plate commissioning for nuclear power plants

Professional Standard - Agriculture

  • GB/T 1801-1979 Tolerance and fit dimension to 500mm hole, shaft tolerance zone and fit
  • GB/T 1803-1979 Tolerance and fitting dimensions up to 18mm holes shaft tolerance range

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

  • GB/T 1800.4-1999 Limits and fits Tables of STANDARD tolerance grades and limit deviations for holes and shafts
  • GB/T 3411-1994 Unbonded elastic wire resistance type pore pressure cell
  • GB/T 12620-2008 Round and elongated apertures with round and square plate screens
  • GB/T 10612-2003 Industrial plate screens - Thickness below 3 mm - Round and square holes
  • GB/T 10613-2003 Industrial plate screens—Thickness of 3 mm and above—Round and square holes
  • GB/T 12620-1990 Slots with round end and slots with square end plate screens
  • GB/T 4390-2008 Wrench openings - Tolerances for general use

未注明发布机构

Professional Standard - Electricity

工业和信息化部

Group Standards of the People's Republic of China

Professional Standard - Aviation

Professional Standard - Machinery

  • JB/T 1623-1992 Dimensional Deviation for Center-to-center Distance between Pipe Orifices of Boiler
  • JB/T 5286-1991 Cardboard, diatomite plate and frame filter press
  • JB/T 9031-1999 Perforated screen plate for ore

Professional Standard - Forestry

Anhui Provincial Standard of the People's Republic of China

  • DB34/T 3187-2018 Calibration method of flow meter orifice plate in gas drainage system in coal mine

Professional Standard-Ships

Association Francaise de Normalisation

  • NF E29-210:2007 Industrial pipework - Orifice flanges for differential pressure devices.

SE-SIS

German Institute for Standardization

SCC

  • DIN 7154-1:1966 ISO-fits for the hole basis system; tolerance zones, deviations
  • AENOR UNE 26129:1957 THREADED BUSHINGS FOR BLIND AND THROUGH HOLES. THREAD TOLERANCES
  • BS 1669:1950 Industrial perforated plate
  • NS 1559:1968 ISO tolerances — Selection of fits with basic holes
  • BS 1042-1-1.2:1989 Measurement of fluid flow in closed conduits. Pressure differential devices-Specification for square-edged orifice plates and nozzles (with drain holes, in pipes below 50 mm diameter, as inlet and outlet devices) and other orifice plates

British Standards Institution (BSI)

  • BS ISO/TR 15377:1998(1999) Measurement of fluid flow by means of pressure differential devices — Guidelines for specification of nozzles and orifice plates beyond
  • BS EN ISO 5167-2:2003 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Orifice plates

ESDU - Engineering Sciences Data Unit

  • ESDU 81039 B-1985 FLOW OF LIQUIDS Pressure losses across orifice plates@ perforated plates and thick orifice plates in ducts
  • ESDU 81039 C-2007 Flow of liquids. Pressure losses across orifice plates@ perforated plates and thick orifice plates in ducts.
  • ESDU 82009 C-1993 COMPRESSIBLE FLOW OF GASES Pressure losses across orifice plates@ perforated plates and thick orifice plates in ducts
  • ESDU 82009 D-2007 Compressible flow of gases. Pressure losses and discharge coefficients of orifice plates@ perforated plates and thick orifice plates in ducts.

CH-SNV

  • SN ISO 61:1983 Plastics - Determination of apparent density of moulding material that cannot be poured from a specified funnel

BE-NBN

RO-ASRO

  • STAS 7391/6-1975 Tolerances of form and of position TOI.ERANCES OF POSITION FOR GLEARANCE HOLES FOR FASTENERS
  • STAS 10948-1988 PERFORATED PLATES FOR GENERAL PURPOSE

American Society of Mechanical Engineers (ASME)

Korean Agency for Technology and Standards (KATS)

American National Standards Institute （ANSI)

FI-SFS

  • SFS 2231-1968 ISO. tolerance. Choose the right hole cover
  • SFS 8387-1986 In case of interpretation disputes the Finnish text applies

YU-JUS

VN-TCVN

European Committee for Standardization (CEN)

  • EN ISO 5167-2:2022 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 2: Orifice plates (ISO 5167-2:2022)

United States Navy

RU-GOST R

  • GOST 21586-1976 Countersinks for machining holes diameters from 3 to 80 mm. Hole tolerance

AR-IRAM

  • IRAM 5013-1954 Recommended settings for hole-to-hole differences in IT6 type
  • IRAM 5014-1954 Recommended settings for hole-to-hole differences in IT7 type
  • IRAM 5018-1954 Recommended settings for IT11 hole-to-hole differences
  • IRAM 5016-1954 Recommended settings for hole-to-hole differences in IT9 type
  • IRAM 5017-1954 Recommended settings for hole-to-hole differences in IT10 type
  • IRAM 5015-1954 Recommended settings for hole-to-hole differences in IT8 type

Japanese Industrial Standards Committee (JISC)

  • JIS B 0401-2:1998 ISO system of limits and fits -- Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts

SAE - SAE International

Defense Logistics Agency

CU-NC

Society of Automotive Engineers (SAE)

American Society for Testing and Materials (ASTM)

  • ASTM E454-11 Standard Specification for Industrial Perforated Plate and Screens (Square Opening Series)
  • ASTM E323-80(2004) Standard Specification for Perforated-Plate Sieves for Testing Purposes
  • ASTM E454-12 Standard Specification for Industrial Perforated Plate and Screens (Square Opening Series)

HU-MSZT

orifice plate,Orifice plate,Orifice hole,flow orifice orifice,Orifice plate,Orifice plate Orifice plate,Orifice Standard Orifice,Six-hole plate orifice plate,Orifice six-well plate,Orifice Diameter,orifice plate,plate hole,Pressure difference before and after the throttle orifice,Differential pressure flow orifice,Orifice pressure difference,Orifice differential pressure,96-well plate orifice plate,Poor orifice,Orifice Orifice Orifice

All Rights Reserved © 2026 WWW.CHINASTANDARDS.NET visa master american express unionpay apple pay paypal google pay