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JJG 621-2012 English PDF

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Upon your order, we will start to translate JJG 621-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

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Q: Should I purchase the latest version JJG 621-2012?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 621-2012 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$399.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 621-2012: Verification Regulation of Hydraulic Jacks
Status: Valid

JJG 621: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 621-2012	399	Add to Cart	3 days	Verification Regulation of Hydraulic Jacks	Valid
JJG 621-2005	519	Add to Cart	4 days	Hydraulic jacks VRof	Obsolete
JJG 621-1996	279	Add to Cart	3 days	Verification Regulation of Hydraulic Tension Sake	Obsolete
JJG 621-1989	RFQ	ASK	3 days	(Chinese Industry Standard)	Obsolete

Similar standards

GB/T 36126 JJG 646 GB/T 1885 JJG 159 JJG 126 JJG 620

Basic data

Standard ID: JJG 621-2012 (JJG621-2012)
Description (Translated English): Verification Regulation of Hydraulic Jacks
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A53
Classification of International Standard: 17.120
Word Count Estimation: 17,196
Older Standard (superseded by this standard): JJG 621-2005
Quoted Standard: JJG 49-1999; JJF 1001; JG/T 321-2011; JB 2104-1991
Regulation (derived from): AQSIQ Announcement No. 132 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to hydraulic jack having indication function (hereinafter referred to as jack) of the initial verification, testing and use of follow-up checks.

JJG 621-2012: Verification Regulation of Hydraulic Jacks

---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.
Verification Regulation of Hydraulic Jacks State verification procedures People's Republic of China Hydraulic jacks HydraulicJacks Issued on. 2012-09-03 2013-03-03 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Hydraulic jacks test procedures ofHy draulicJacks Replacing JJG 621-2005 Focal point. the National Technical Committee on Metering hardness force value Main drafting unit. Shenzhen Academy of Metrology and Quality Inspection Guangdong Provincial Institute of Metrology Fujian Institute of Metrology Hubei Provincial Institute of Measurement and Testing Participated in the drafting. Shaoxing City of Kent Machinery Electronics Co., Ltd. Jilin Institute of Metrology Shanghai Urban Planning and Design Institute This procedure hardness values measured force commissioned by the National Technical Committee is responsible for interpretation The main drafters of this procedure. Huangshi Yuan (Shenzhen Academy of Metrology and Quality Inspection) Peng Danyang (Guangdong Institute of Metrology) Yao Jinhui (Fujian Institute of Metrology) Hu Xiang (Hubei Institute of Measurement and Testing) Drafters participate. Lee root (Shaoxing City of Kent Machinery Electronics Co., Ltd.) Qu Zhuo (Jilin Institute of Metrology) Chen Jianxiang (Shanghai Urban Planning and Design Institute)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Terms (1) 3.1 Load Efficiency (1) 3.2 internal leakage (1) 3.3 Calibration Equation (1) 4 Overview (1) 5 metering performance requirements (1) 6 General Requirements (2) 6.1 Appearance and accessories (2) 6.2 Indicator jack (2) 6.3 Operating adaptation (2) 7 control of measuring instruments (2) 7.1 verification Conditions (2) 7.2 test items and test methods (3) 8 test results processing and verification cycle (6) Appendix A test certificate page format (7) Appendix B test results of notice-page format (9) Appendix C test record format (11)

Introduction

JJF1002 "national verification procedures write rules", JJF1001 "common measurement terms and definitions of" common structure To support a revision of the regulations on the basis of the system specifications. JJG 621 "hydraulic jack" is JG/T 321-2011 "prestressed by hydraulic jacks", JB2104- 1991 "hydraulic jack" as the basis for revising JJG 621-2005 version. And JJG 621-2005 phase Ratio, in addition to editorial changes outside the main technical changes are as follows. --- Canceled a procedure crawling requirements; --- Cancel the original statutes to start oil pressure requirements; --- Canceled a trip to the requirements of the statutes; --- Refine the measurement of performance indicators show a different jack shown values (see 5.1); --- Increased verification of measuring instruments specific requirements (see 7.1.2); --- Refine the test conditions (see 7.1). JJG 621-2005 of previously issued as follows. --- JJG 621-1996 "hydraulic tensioning machine." Hydraulic jacks test procedures

1 Scope

The order applies to have the indication of hydraulic jacks (hereinafter referred to as jack) initial verification, follow-up inspection And given the use of checks. 2. References JJG 49-1999 Bourdon Tube Precise pressure gauge and vacuum gauge JJF1001 common measurement terms and definitions JG/T 321-2011 prestressed by hydraulic jacks JB2104-1991 hydraulic jack For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 Terms

3.1 load efficiency loadefficiency Jack output power than with the theoretical value of the force. 3.2 Leak internalleak Jack while maintaining the pressure, due to poor internal seal leakage phenomenon. 3.3 calibration equation calibrationequation In order to be able to jack anyone, continuous use within the range of values, established in accordance with a limited number of extremely heavy set of data Top pressure value and the standard represents the relationship between the applied force value. Note. usually once or twice a curve.

4 Overview

Mainly by jack jack body, pumps, oil, and indicators, and its working principle is to pump oil through Road to the jack body oil, body exerting a force on the jack body force, indicated by analog or digital indicator Directly or indirectly, indicating the value of the applied force. Hydraulic jack is mainly used for pile force value engineering and structural engineering applied And control.

5 metering performance requirements

5.1 Indicator display force value, jack accuracy level and technical indicators in Table 1. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 621-2012_English be delivered?

Answer: Upon your order, we will start to translate JJG 621-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 621-2012_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 621-2012_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 JJG 621-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 621-2012 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.