ISO 228-2-1987 Pipe threads where pressure-tight joints are not made on the threads Part 2 Verification by means of limit gauges《非螺纹密封的管螺纹 第2部分 用极限量规检验》.pdf

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ISO 228-2-1987 Pipe threads where pressure-tight joints are not made on the threads Part 2 Verification by means of limit gauges《非螺纹密封的管螺纹 第2部分 用极限量规检验》.pdf_第1页
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ISO 228-2-1987 Pipe threads where pressure-tight joints are not made on the threads Part 2 Verification by means of limit gauges《非螺纹密封的管螺纹 第2部分 用极限量规检验》.pdf_第2页
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ISO 228-2-1987 Pipe threads where pressure-tight joints are not made on the threads Part 2 Verification by means of limit gauges《非螺纹密封的管螺纹 第2部分 用极限量规检验》.pdf_第3页
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ISO 228-2-1987 Pipe threads where pressure-tight joints are not made on the threads Part 2 Verification by means of limit gauges《非螺纹密封的管螺纹 第2部分 用极限量规检验》.pdf_第4页
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ISO 228-2-1987 Pipe threads where pressure-tight joints are not made on the threads Part 2 Verification by means of limit gauges《非螺纹密封的管螺纹 第2部分 用极限量规检验》.pdf_第5页
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1、NORME INTERNATIONALE INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXAYHAPOAHAR OPrAHM3AMfl I-IO CTAHAPTM3AWl Filetages de tuyauterie pour raccordement sans 6tanch6it6 dans le filet - Partie 2 I Vhification par calibres ZI limites Pipe threads where pre

2、ssure- tight joints are not made on the threads - Part 2 : Verification by means of limit gauges IS0 228-2 Deuxihme kdition 1987-08-15 Numb-o de rkfkence IS0 228-2 : 1987 (F) Avant-propos LISO (Organisation internationale de normalisation) est une federation mondiale dorganismes nationaux de normali

3、sation (comites membres de IISO). Lelaboration des Normes internationales est normalement confide aux comites techniques de IISO. Chaque comite membre inter-es2 I-E + T -G - Rapporteur NENTRE PAS / iiC b3 CI 2 +I - c Dkgagementl) au-dessous de 4 - TPL cu d + Y L + 6 1 G - I J I - I I tc I: ti I * Ra

4、pporteur ENTRE F ST I $: Ei G 2 - -! : cw a h” +I - 4 + lu” I G - Y J ha +I z a” h I 3 GJ - Temoin dusure Dkgagementl) au-dessous de - 4 - TPL Figure 4 - Profils de filets + G I -G - Nombre de filets l-4 dans 25,4 mm mm 28 0,134 19 0,198 14 0,268 11 0,341 u = OJ4784 P Fond de filet pour degagement 1

5、) La forme du dkgagement est laiss6e au choix du fabricant. 6 IS0 228-2 : 1987 (F) 6.2 CiM NENTRE PAS 6.2.1 Positions relatives des zones de tokrances sur francs T6moin dusure pour bague filetee NENTRE PAS Limite dusure pour bague filetee NENTRE PAS Tampon rapporteur NENTRE PAS pour bague filetee NE

6、NTRE PAS neuve Bague filetke NENTRE PAS f Tampon rapporteur ENTRE pour bague filetee NENTRE PAS neuve Figure 5 - Positions relatives des zones de tolkrances sur flancs IS0 228-2 : 1987 (F) 6.2.2 Profils de filets hl I2 +I G c I s I - +I c w 0 I c: c Rapporteur NENTRE PAS / - ; - Bague NENTRE PAS (mesure directe) -t-P au-dessus de 2 h +I 5 + cv h” Rapporteur ENTRE A G- cv : t-5 5 0 +I cn -E tc I T cw iii c I I 3 I G - T6moin dusure / 1 Y CL h” G +I - 4s f 5 + sz N $ T I5 : I I - cv s 2 I -A -ts” - - Figure 6 - Profils de filets 1) La forme du degagement est laissbe au choix du fabricant. 8

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