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GB 27791-2020 English PDF

Q: How long will the true-PDF of English version of GB 27791-2020 be delivered?

Upon your order, we will start to translate GB 27791-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of GB 27791-2020_English with my colleagues?

Yes. The purchased PDF of GB 27791-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Q: Does the price include tax/VAT?

Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

Q: Do you accept my currency other than USD?

Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Q: Should I purchase the latest version GB 27791-2020?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 27791-2020 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 27791-2020: (Town gas pressure regulator box)
Status: Valid

GB 27791: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 27791-2020	359	Add to Cart	4 days	(Town gas pressure regulator box)	Valid
GB 27791-2011	599	Add to Cart	3 days	City gas pressure regulating installation	Obsolete

Similar standards

GB 44016 GB/T 41319 GB 27790 GB/T 26002

Basic data

Standard ID: GB 27791-2020 (GB27791-2020)
Description (Translated English): (Town gas pressure regulator box)
Sector / Industry: National Standard
Classification of Chinese Standard: P47
Word Count Estimation: 19,117
Date of Issue: 2020-11-17
Date of Implementation: 2021-12-01
Older Standard (superseded by this standard): GB 27791-2011
Regulation (derived from): National Standard Announcement No. 25 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB 27791-2020: (Town gas pressure regulator box)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Town gas pressure regulator box) ICS 91:140 P47 National Standards of People's Republic of China Replace GB 27791-2011 Town gas pressure regulator box 2020-11-17 released 2021-12-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Model 3 4:1 Model establishment 3 4:2 Example 4 5 Structure and materials 4 5:1 General requirements 4 5:2 Box 5 5:3 Piping components 5 5:4 Valve 6 5:5 Metering 7 5:6 Heating 7 5:7 Electrical and instrumentation 7 5:8 Security configuration 7 6 Requirements 8 6:1 Appearance and dimensions 8 6:2 Non-destructive testing 8 6:3 Strength 8 6:4 Air tightness 8 6:5 Setting error of outlet pressure 8 6:6 Safety device start pressure setting error 8 6:7 Rated flow 9 6:8 Closing pressure 9 6:9 Insulation performance 9 7 Test method 9 7:1 Test instrument 9 7:2 Appearance and dimensions 9 7:3 Non-destructive testing 9 7:4 Strength 11 7:5 Air tightness 11 7:6 Outlet pressure setting error 12 7:7 Safety device start pressure setting error 12 7:8 Rated flow 12 7:9 Closing pressure 13 7:10 Insulation performance 13 8 Inspection rules 13 8:1 Inspection classification 13 8:2 Factory inspection 13 8:3 Type inspection 13 8:4 Judgment Rule 14 9 Quality certification documents, signs, packaging, transportation and storage 14 9:1 Quality certification documents 14 9:2 Sign 14 9:3 Packaging and transportation 15 9:4 Storage 15

Foreword

This standard was drafted in accordance with the rules given in GB/T 1:1-2009: This standard replaces GB 27791-2011 "Urban Gas Surge Box": Compared with GB 27791-2011, the main technical changes are as follows: ---Modified the scope (see Chapter 1, Chapter 1 of the:2011 edition); ---Modified the terminology of the gas surge tank (see 3:1, 3:1 in the:2011 edition); ---Modified the definition of the term "rated flow" (see 3:3, 3:3 in the:2011 edition); --- Added the term "maximum inlet working pressure" (see 3:5); ---Modified the model establishment (see Chapter 4, Chapter 4 of the:2011 edition); ---Modified the structure and materials (see Chapter 5, Chapter 5 of the:2011 edition); ---The technical level of non-destructive testing has been added (see 6:2); ---Modified the test pressure of the air tightness test (see 6:4, 6:4 in the:2011 edition); ---Modified the setting error of the starting pressure of the safety device (see 6:6, 6:6, 6:7 of the:2011 edition); ---Modified the insulation performance (see 6:9, 6:10 in the:2011 edition); ---Modified the non-destructive testing method and ratio (see 7:3:4, 7:3:4 in the:2011 edition); ---Added the disposal method for non-destructive testing unqualified (see 7:3:8); ---Modified the strength test (see 7:4, 7:4 in the:2011 edition); ---Modified the air tightness test method (see 7:5:3, 7:5:3 of the:2011 edition); ---Modified the flow rate during the outlet pressure test (see 7:6:3, 7:6:3 of the:2011 edition): This standard was proposed and managed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China: The previous versions of the standard replaced by this standard are as follows: ---GB 27791-2011: Town gas pressure regulator box

1 Scope

This standard specifies the model, structure and materials, requirements, test methods, and inspection of gas pressure regulator boxes for urban gas (hereinafter referred to as "pressure regulator boxes") Inspection rules, quality certification documents, signs, packaging, transportation and storage: This standard applies to imported working pressure not greater than 10:0MPa, and the working temperature range is greater than -20 ℃, less than or equal to 60 ℃ The surge tank: This standard does not apply to underground surge tanks:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article Pieces: For undated references, the latest version (including all amendments) applies to this document: GB/T 150 (all parts) pressure vessel GB/T 151 heat exchanger GB/T 3098:1 Mechanical properties of fasteners bolts, screws and studs GB 3836:1 Explosive environment Part 1: General requirements for equipment GB 3836:4 Explosive atmosphere Part 4: Equipment protected by intrinsically safe "i" GB/T 5310 Seamless steel pipe for high pressure boiler GB/T 6479 Seamless steel pipe for high pressure fertilizer equipment GB/T 6968 diaphragm gas meter GB/T 8163 Seamless steel pipe for conveying fluid GB 8624 Classification of burning performance of building materials and products GB/T 9124:1 Steel pipe flanges Part 1: PN series GB/T 9124:2 Steel Pipe Flange Part 2: Class Series GB/T 9711 Steel Pipe for Pipeline Transportation System of Petroleum and Natural Gas Industry GB/T 12224 General requirements for steel valves GB/T 12237 Steel ball valves for petroleum, petrochemical and related industries GB/T 12459 Types and parameters of steel butt welding pipe fittings GB/T 13401 Technical Specification for Steel Butt Welding Fittings GB/T 13402 large diameter steel pipe flange GB/T 14976 Seamless stainless steel pipe for fluid transportation GB/T 17185 steel flange pipe fittings GB/T 19672 Technical conditions for pipeline valves GB/T 20801:3 Pressure Piping Specification Industrial Piping Part 3: Design and Calculation GB/T 20801:4 Pressure Piping Specification Industrial Piping Part 4: Fabrication and Installation GB/T 20801:5 Pressure Piping Specification Industrial Piping Part 5: Inspection and Testing GB/T 25198 Pressure Vessel Head GB 27790 Town Gas Regulator ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB 27791-2020_English be delivered?

Answer: Upon your order, we will start to translate GB 27791-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB 27791-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB 27791-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB 27791-2020?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 27791-2020 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.