Standard No.:	GB/T 37827-2019
English Name:	Welded ball valve for urban heating
Chinese Name:	城镇供热用焊接球阀
Chinese Classification:	P46    Heat supply and heating engineering
Professional Classification:	GB    National Standard
ICS Classification:	91.140.10 91.140.10    Central heating systems 91.140.10
Source Content Issued by:	SAMR; SAC
Issued on:	2019-08-30
Implemented on:	2020-7-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	12500 words
Translation Price(USD):	370.0
Delivery:	via email in 1 business day

Welded ball valve for urban heating 1 Scope This standard specifies terms and definitions, designation and parameters, structure, general requirements, requirements, test methods, inspection rules, marking, protection, packaging, storage and transportation of welded ball valve for urban heating. This standard is applicable to welded ball valves (hereinafter referred to as "ball valves") with nominal dimension less than or equal to DN1600, nominal pressure less than or equal to PN25, service temperature of 0°C to 180°C and using water as the medium. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 150.1 Pressure vessels - Part 1: General requirements GB/T 150.3 Pressure vessels - Part 3: Design GB/T 150.4 Pressure vessels - Part 4: Fabrication, inspection and testing, and acceptance GB/T 223 (all parts) Methods for chemical analysis of iron, steel and alloy GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature GB/T 229 Metallic materials - Charpy pendulum impact test method GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method GB/T 713 Steel plates for boilers and pressure vessels GB/T 985.1 Recommended joint preparation for gas welding, manual metal arc welding, gas-shield arc welding and beam welding GB/T 985.2 Recommended joint preparation for submerged arc welding GB/T 1047 Pipework components - Definition and selection of DN (nominal size) GB/T 1048 Pipework components - Definition and selection of PN (nominal pressure) GB/T 1220 Stainless steel bars GB/T 3077 Alloy structure steels GB/T 3091 Welded steel pipes for low pressure liquid delivery GB/T 3274 Hot-rolled plates, sheets and strips of carbon structural steels and high strength low alloy structural steels GB/T 4237 Hot rolled stainless steel plate, sheet and strip GB/T 7306.2 Pipe threads with 55-degree thread angle where pressure-tight joints are made on the threads - Part 2: Taper internal and external threads GB/T 8163 Seamless steel tubes for liquid service GB/T 9113 Integral steel pipe flanges GB/T 9119 Slip-on-welding plate steel pipe flanges GB/T 9124 Specification for steel pipe flanges GB/T 9711 Petroleum and natural gas industries - Steel pipe for pipeline transportation systems GB/T 12223 Part-turn valve actuator attachments GB/T 12224 General requirements for industrial steel valves GB/T 12228 General purpose industrial valves - Specification of carbon steel forgings GB/T 13927-2008 Industrial valves - Pressure testing GB/T 14976 Seamless stainless steel pipes for fluid transport GB/T 30308 Fluoroelastomers - General specification and procedure of evaluation GB 50235-2010 Code for construction of industrial metallic piping engineering JB/T 106 Valves marking and paint NB/T 47008 Carbon and alloy steel forgings for pressure equipment NB/T 47010 Stainless and heat-resisting steel forgings for pressure equipments NB/T 47013.2-2015 Non-destructive testing of pressure equipments - Part 2: Radiographic testing NB/T 47013.3-2015 Nondestructive testing of pressure equipments - Part 3: Ultrasonic testing NB/T 47013.5-2015 Nondestructive testing of pressure equipments - Part 5: Penetrant testing NB/T 47014 Welding procedure qualification for pressure equipment QB/T 3625 Polytetrafluoroethylene sheet QB/T 4041 Polytetrafluoroethylene rod 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 fully welded body ball valve ball valve with the body formed through one pass or more passes of weld 3.2 full-port ball valve ball valve in which any bore diameter is the same as the pipe bore diameter  

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Designation and parameters 5 Construction 6 General requirements 7 Requirements 8 Test methods 9 Inspection rules 10 Marking 11 Protection, packaging, storage and transportation Annex A (Normative) Sleeve Annex B (Normative) Axial force and bending moment values Annex C (Normative) Bending moment test method