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GB/T 21835-2008 PDF English

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GB/T 21835-2008: Dimensions and masses per unit length of welded steel pipes
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GB/T 21835-2008125 Add to Cart Auto, 9 seconds. Dimensions and masses per unit length of welded steel pipes Valid

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GB/T 21835-2008: Dimensions and masses per unit length of welded steel pipes

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H 48 NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA Dimensions and Masses per Unit Length of Welded Steel Pipes Issued on: MAY 13, 2008 Implemented on: NOVEMBER 01, 2008 Jointly issued by. General Administration of Quality Supervision, Inspection and Quarantine (GAQSIQ); Standardization Administration (SAC) of the People's Republic of China. GB

Table of Contents

Foreword ... iii 1 Scope ... 1 2 Normative References ... 1 3 Classification ... 1 4 Nominal Dimensions ... 1 5 Theoretical Masses per Unit Length... 2

Foreword

This standard is corresponding to ISO 4200. 1991 "Plain End Steel Tubes, Welded and Seamless -- General Tables of Dimensions and Masses per Unit Length" (English edition) and ISO 1127. 1992 "Stainless Steel Tubes--Dimensions, Tolerances and Conventional Masses per Unit Length" (English edition). This standard is not equivalent to ISO 4200. 1991 and ISO 1127. 1992, in term of the degree of consistency. This standard was proposed by China Iron and Steel Association. This standard is under the jurisdiction of the National Technical Committee on Iron and Steel of Standardization Administration of China. Chief Drafting Organizations of this standard. Panyu Chu Kong Steel Pipe Co., Ltd., and Jinxi Steel Pipe Co., Ltd. Chief drafting staffs of this standard. Chen Chang, Liu Qingcai, Qi Huijuan, Wang Lishu, and Huang Kejian. 1Dimensions and Masses per Unit Length of Welded Steel Pipes

1 Scope

This standard specifies the nominal dimensions and masses per unit length of the welded steel pipes. This standard is applicable to the nominal dimensions and masses per unit length for formulating the standards of round plain end welded steel pipes.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent correctionments to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to these specifications. GB/T 8170 "Rules for Rounding off of Numerical Values" GB/T 20878-2007 "Stainless and Heat-resisting Steels—Designation and Chemical Composition"

3 Classification

Welded steel pipes given in this standard are divided into ordinary welded steel pipes, precision welded steel pipes and welded stainless steel pipes.

4 Nominal Dimensions

4.1 Dimension series 4.1.1 External diameter of the welded steel pipes is divided into three series. Series 1, Series 2 and Series 3, Series 1 is the universal series recommended to be adopted; Series 2 is non-universal series; and Series 3 refers to some few special and dedicated series. The external diameter of ordinary weldable steel is divided into Series 1, Series 2 and Series 3, the external diameter of precision steel pipe is divided into Series 2 and Series 3, and that of the welded stainless steel pipe is divided into Series 1, Series and Series 3. 4.1.2 The wall thickness of ordinary welded steel pipe is divided into Series 1 and Series 2. Series 1 is the preferred series and Series 2 is not. 1321 ● ● ● ● ● ● ● ● ● 1422 ● ● ● ● ● ● ● ● ● 1524 ● ● ● ● ● ● ● ● 1626 ● ● ● ● ● ● ● ● ● 1727 ● ● ● ● ● ● ● ● ● 1829 ● ● ● ● ● ● ● ● ● Table 3 (Continued) External diameter/mm Wall thickness/mm Series 1 Series 2 Series 3 6.5(6.3) 7.0(7.1) 7.5 8.0 8.5 9.0(8.8) 9.5 10 11 12(12.5) 14(14.2) 15 16 17(17.5) 18 20 22(22.2) 24 25 26 28 1219 ● ● ● ● ● ● ● ● ● ● ● 1321 ● ● ● ● ● ● ● ● ● ● ● ● ● 1422 ● ● ● ● ● ● ● ● ● ● ● ● ● 1524 ● ● ● ● ● ● ● ● ● ● ● ● ● 1626 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 1727 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 1829 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Note 1. Dimensions in () represent the specifications of the metric system inverted from the corresponding specifications of the English system. Note 2. "●" represents the regular specifications. (END) ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.

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