TABLE OF CONTENTS PAGE 5 1 INTRODUCTION 3 2 FLANGES 7 - 15 1 Threaded, Blind & Weld Neck Flanges (As per API-6A) 1.1 Pressure Rating - API 6B-2000 PSI W.P. (With R or RX type Ring Gasket) 7 1.2 Pressure Rating - API 6B-3000 PSI W.P. (With R or RX type Ring Gasket) 7 1.3 Pressure Rating - API 6B-4000 PSI W.P. (With R or RX type Ring Gasket) 7 2 Integral Flanges (As per API-6A) 2.1 Pressure Rating - API 6BX-2000 PSI W.P. (With BX type Ring Gasket) 8 2.2 Pressure Rating - API 6BX-3000 PSI W.P. (With BX type Ring Gasket) 8 2.3 Pressure Rating - API 6BX-5000 PSI W.P. (With BX type Ring Gasket) 8 2.4 Pressure Rating - API 6BX-10000 PSI W.P. (With BX type Ring Gasket) 8 2.5 Pressure Rating - API 6BX-15000 PSI W.P. (With BX type Ring Gasket) 8 2.6 Pressure Rating - API 6BX-20000 PSI W.P. (With BX type Ring Gasket) 9 3 Blind & Weld Neck Flanges (As per API-6A) 3.1 Pressure Rating - API 6BX-10000 PSI W.P. (With BX type Ring Gasket) 9 3.2 Pressure Rating - API 6BX-15000 PSI W.P. (With BX type Ring Gasket) 9 3.3 Pressure Rating - API 6BX-20000 PSI W.P. (With BX type Ring Gasket) 10 4 Blind & Test Flanges (As per API-6A) 4.1 Pressure Rating - API 6BX-10000 PSI W.P. (With BX type Ring Gasket) 10 4.2 Pressure Rating - API 6BX-15000 PSI W.P. (With BX type Ring Gasket) 10 4.3 Pressure Rating - API 6BX-20000 PSI W.P. (With BX type Ring Gasket) 10 5 Blind Flanges (Large Diameter) (As per API-6A) 5.1 Pressure Rating - API 6BX-2000 PSI W.P. (With BX type Ring Gasket) 11 5.2 Pressure Rating - API 6BX-3000 PSI W.P. (With BX type Ring Gasket) 11 5.3 Pressure Rating - API 6BX-5000 PSI W.P. (With BX type Ring Gasket) 11 5.4 Pressure Rating - API 6BX-10000 PSI W.P. (With BX type Ring Gasket) 11 5.5 Pressure Rating - API 6BX-15000 PSI W.P. (With BX type Ring Gasket) 11 5.6 Pressure Rating - API 6BX-20000 PSI W.P. (With BX type Ring Gasket) 11 6 Flanges (Threaded, Slip-on Welding, Blind Socket Welding Lapped & Welding Neck) 6.1 Class 150 Flanges (As per ANSI B16.5) 12 6.2 Class 300 Flanges (As per ANSI B16.5) 13 6.3 Class 400 Flanges (As per ANSI B16.5) 13 6.4 Class 600 Flanges (As per ANSI B16.5) 14 6.5 Class 900 Flanges (As per ANSI B16.5) 14 6.6 Class 1200 Flanges (As per ANSI B16.5) 15 6.7 Class 2500 Flanges (As per ANSI B16.5) 15 3 STUDS & NUTS 16 - 18 1 Studs &  Nuts (As per API-6A & ANSI B16.5) 1.1 Standards / Material Specifications 16 1.2 Bolting Reqirements for API End Flanges (As per API-6A) 16 1.3 List of Bolting Specifications for ANSI B16.5 Flange 17 1.4 Flange Chart showing Bolt Sizes & Ring Gasket Sizes 18 4 RING GASKET & RING GROOVE DIMENSIONS (As per ASME B16.20 & API-6A) 19 - 23 1 Type R Ring Gaskets (As per ASME B16.20) 19 - 20 2 Type R Ring Gaskets (As per API-6A) 21 3 Type RX Ring Gaskets (As per API-6A) 22 4 Type BX Ring Gaskets (As per API-6A) 23 5 FLANGED CROSSES & TEES 24 1 API Flanged Crosses & Tees (As per API-6A) 1.1 Pressure Rating - 2000 PSI 24 1.2 Pressure Rating - 3000 PSI 24 1.3 Pressure Rating - 5000 PSI 24 1.4 Pressure Rating - 10000 PSI 24 1.5 Pressure Rating - 15000 PSI 24 1.6 Pressure Rating - 20000 PSI 24