GB/T 4622.1-2022 (GB/T 4622.1-2009) PDF EnglishUS$70.00 · In stock · Download in 9 seconds
GB/T 4622.1-2009: Classification for spiral wound gaskets Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Obsolete GB/T 4622.1: Historical versions
Similar standardsGB/T 4622.1-2009: Classification for spiral wound gaskets---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT4622.1-2009GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 23.040.60 J 15 Replacing GB/T 4622.1-2003 Classification for Spiral Wound Gaskets Issued on: NOVEMBER 15, 2009 Implemented on: SEPTEMBER 1, 2010 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 4 2 Types... 4 3 Codes... 6 4 Marks and Symbols... 7ForewordGB/T 4622, "Spiral Wound Gaskets", consists of three parts. — Classification; — Dimensions of gaskets for pipe flanges; — Specification. This part replaces GB/T 4622.1-2003 "Specification and Symbol of Spiral Wound Gaskets". Compared with GB/T 4622.1-2003, the main changes of this part are as follows. — Corresponding relation for the selection of types of flange sealing surfaces and gaskets is added; — Two metal strip materials are deleted and one centering ring material is added; — "Marking (Chapter 4 of the 2003 edition)" is replaced by "Marks and Symbols". This part was proposed by China Machinery Industry Federation. This part shall be under the jurisdiction of the National Technical Committee on Pipe Fitting of Standardization Administration of China (SAC/TC 237). Drafting organizations of this part. China Productivity Center for Machinery, Cixi Hengli Packing & Sealing Co., Ltd. and Ningbo Tiansheng Sealing Packing Co., Ltd. Chief drafting staffs of this part. Li Junying, Qiu Kuanheng, Li Xinggen. The previous editions replaced by this part are as follows. — GB/T 4622.1-1993, GB/T 4622.1-2003. Figure 5 Typical Construction of Spiral Wound Gasket 2.3 Spiral wound gaskets for tongue and groove face flanges shall be of basic type. 2.4 Spiral wound gaskets for male and female flanges shall be with an inner ring. 2.5 Spiral wound gaskets for raised face and full face flanges may be with a centering ring1). 2.6 Spiral wound gaskets with an inner ring and a centering ring shall be given priority to be used with raised face and full face flanges. If the filler material is PTFE, this type shall be applied.3 Codes3.1 Codes for spiral wound gasket types are specified in Table 1. Table 1 Type Codes Type Code Suitable Flange Sealing Surface Basic type A Tongue and groove face With an inner ring B Male and female face With a centering ring C Flat face With an inner ring and a centering ring D Raised face 3.2 Codes for spiral wound gasket materials are specified in Table 2. Table 2 Material Codes Material of centering ring Material of metal strip Material of filler Material of inner ring Name Code Name Code Name Code Name Code Without centering ring 0 06Cr19Ni9 (0Cr18Ni9) 2 Asbestos 1 Without inner ring 0 Low carbon steel 1 06Cr17Ni12Mo2 (0Cr17Ni12Mo2) 3 Flexible graphite 2 06Cr19Ni9 (0Cr18Ni9) 2 06Cr19Ni9 (0Cr18Ni9) 2 022Cr17Ni12Mo2 (00Cr17Ni14Mo2) 4 PTFE 3 06Cr17Ni12Mo2 (0Crl7Ni12Mo2) 3 1 Users of this standard shall take into consideration the risks that the spiral wound gasket without an inner ring or restriction on the inner diameter may be subjected to radial buckling and then affect the normal use. identifying the materials of the metal strip and the filler. The color coding method is detailed in 4.2.2. 4.2.2 Color codes A continuous color around the centering ring edge shall identify the metal of the metal strip. Intermittent stripes around the edge of the centering ring shall identify the filler material. Gaskets of DN40 and above are indicated by four color strips spaced 90 degrees apart, and gasket sizes below DN 40 are indicated by two symmetrical color stripes. The color codes may be applied according to Table 3 or as per user’s request. Table 3 Color Codes Material Color code Material Color code Material of metal strip 06Cr19Ni9 (0Cr18Ni9) Yellow Material of metal strip Hastelloy Cb Beige 022Cr19Ni10 (00Cr19Ni10) No color a Inconel 600b Gold 16Cr23Ni13 (2Cr23Ni13) No color a Inconel 625b Gold 06Cr25Ni20 (0Cr25Ni20) No colora Incoloy 800b White 022Cr17Ni12Mo2 (00Cr17Ni14Mo2) Green Incoloy 825 b White 022Cr19Ni13Mo3 (00Cr19Ni13Mo3) Maroon 06Cr18Ni11Nb (0Cr18Ni11Nb) Blue Filler material asbestos No Color 06Cr18Ni11Ti (0Cr18Ni10Ti) Turquoise Flexible graphite Gray strips Zirconium No colora PTFE White strips Pure nickel Red non-asbestos fiber Black strips Pure titanium Purple Micab Pink strips Monel 400b Orange Ceramic Light green strips a Both the manufacture and the purchaser are encouraged to develop an appropriate color code to differentiate the same type gaskets made of different materials. b The materials are simply names of products provided by certain suppliers. They are provided for the convenience of the users of this part, not for the approval of such products. Other equivalent products may be applied. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
