GB/T 12465-2017Piping compensatory couplings (English PDF)

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 12465-2007 "Pipeline compensation joint". Compared with GB/T 12465-2007, the main technical changes as follows:

--- increase the specifications of some products (see 4.2); - increased the type of double ball compensating joint (see 4.3.12);

--- increase the material of the product part (see 5.1);

--- Increased burst pressure requirements (see 5.6). This standard is proposed by China Shipbuilding Industry Corporation. This standard is under the jurisdiction of the Technical Committee of the National Marine Machinery Standardization Technical Committee (SAC/TC137/SC3). The drafting unit. Wuxi Jinyang Pipeline Accessories Co., Ltd., China Shipbuilding Industry Comprehensive Technology and Economy Research Institute. The main drafters of this standard. Wang Ximing, Liu Guozhong, Shen Lisheng, Lu Bin, Chen Jie, Liu Xin, Zhao Zhongfu, Zhang Meiling, Sun Yaogang. This standard replaced the previous version of the standard release. GB/T 12465-1990, GB/T 12465-1996, GB/T 12465-2002, GB/T 12465-2007;

--- GB/T 14414-1993. Piping compensation joints

1 Scope

GB/T 12465-2017 is the Chinese national standard on piping compensatory couplings, in the field of shipbuilding and marine structures. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 28 February 2017 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 June 2017. Classification: ICS 47.020.30, CCS U55. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the flange connection size and sealing surface according to GB/T 9112-2010 (PN series) of the pipeline compensation joints (hereinafter referred to as Compensated joints), labeling, requirements, test methods, inspection rules, marking, packaging, transport and storage. This standard applies to the transportation of seawater, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, oil, refined oil, air, gas, The design, manufacture and acceptance of compensating joints for media piping such as steam, hot gases and powdered particles at a temperature not higher than 205 ° C.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 191 packaging and storage icon High quality carbon structural steel

GB/T 699-1999 Carbon structural steel

GB/T 700-2006 Structural steel for ships and marine engineering GB 712-2011

GB/T 1220-2007 stainless steel rods Ductile Iron Fittings GB/T 1348-2009

GB/T 1804-2000 General tolerances Tolerances of linear and angular dimensions without tolerances Stainless steel cold - rolled steel sheets and steel strip GB/T 3280-2015

GB/T 4237-2015 stainless steel hot rolled steel sheet and strip

GB/T 6388 shipping package collection and delivery mark Types and parameters of steel pipe flanges GB/T Technical conditions for general purpose valves for carbon steel castings

GB/T 12229-2005 Technical requirements and test methods for hot - dip galvanizing of steel - clad steel parts GB/T Specification and test methods for electroless nickel - phosphorus alloy coatings on metallic coatings Stainless steel seamless tubes for fluid delivery GB/T 14976-2012

GB/T 17219 Safety evaluation criteria for drinking water distribution equipment and protective materials CJ/T 120 water supply plastic composite steel pipe

JB/T 4711 pressure vessel coating and shipping packaging Classification of Steel Seafarers (2014) (China Classification Society)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Loose sets of compensated joints sleeveexpansionjoint By the body, seals, compression components composed of loose connecting pipe, mainly for the absorption of axial displacement, and can not withstand the pressure of the thrust of the fill The device of the joint.