شفة غير قياسية DN8-DN4000

شفة غير قياسية

Non-standard flanges will only be used in cases where pressure, temperature and size requirements exceed the capabilities of standard flanges. Keep in mind that non-standard flanges require calculation, design and special manufacturing procedures, which is why they are chosen only as a last resort. The most common such applications are large equipment flanges and heat exchangers body flanges.

Non-standard flanges are designed and calculated according to ASME VIII Div.1 Appendix 2 and Appendix S, and according to ASME VIII Div.2 part 4.16.

Design criteria
Rules for the design of bolted flange connections as described in Div.1 Appendix 2 apply to flanges with gaskets placed entirely within the circle enclosed by the bolt holes and with no contact outside this circle.

This method is applicable to circular flanges under internal pressure and takes into account only hydrostatic end loads and gasket seating loads. Rules have been further modified so that they can be applied to the design of flanges under external pressure, reverse flanges and flanges with nut stops.

Design procedure for large diameter, low pressure flanges shall be supplemented by methods other than the code e.g.: check flange rotation. Flanges greater than 60 inches (1524 millimeters) inside diameter and designed for up to 100 psig (689 KPa) pressure fall under this category.

بحجم

شفة غير قياسية: 1/4 ″ -160 ″

DN8-DN4000

مواد:

فولاذ الكربون: ASTM A105 ، ASTM A105N ، GB 20 ، C22.8.

سبائك الصلب: ASTM / ASME A182 F1-F12-F11-F22- F5-F9- F91

الفولاذ المقاوم للصدأ: ASTM / ASME A182 F304-304L-304H-304LN-304N

ASTM / ASME A182 F316-316L-316H-316LN-316N-316Ti

ASTM / ASME A182 F321-321H ، F347-347H

فولاذ بدرجة حرارة منخفضة: ASTM / ASME A350 LF2.

فولاذ عالي الأداء: ASTM / ASME A694 F42، F52، F56، F60، F65، F70

نوع شفة مواجهة

سلسلة أمريكا: وجه مسطح (FF) ، وجه مرتفع (RF) ، لسان (T) ، أخدود (G) ، أنثى (F) ، ذكر (M) ، وجه مفاصل من النوع الدائري (RJ / RTJ)

سلسلة أوروبا: النوع A (الوجه المسطح) ، النوع B (الوجه المرتفع) ، النوع C (اللسان) ، النوع D (الأخدود) ، النوع E (الذيل) ، النوع F (العطلة) ، النوع G (O-Ring Spigot) ، اكتب H (O-Ring Groove)