Piyush steel has been specialized in manufacturing of premium quality products and providing integrated solutions for the piping industry. We are engaged in pipeline product manufacturing since its inception. We manufacture Weld Neck Flanges Series A or B in various specifications, standards, and designations.
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About Weld Neck Flanges Series A or B:
Generally speaking, series A flanges are much thicker, stronger and heavier than series B flanges in the same pressure ratings and size. A series flanges withstand more external loading than series B type. The series B flanges are required for smaller diameters than A type flanges. It has a small diameter than series A type. Both series A and B flanges are defined as weld neck flanges. However, only A type flanges offer ring type flanges from class 300 to class 900 with this standard.
From an economic point of view, series A flanges are more expensive than B type flanges. In most piping applications series A type flanges are recommended. But in the refurbishment or replacement or non critical designing series, B type flanges are used.
These flanges are known for their impact strength that is ideal for adverse and critical applications. Due to its high temperature strength, it offers great service in the heating applications without any deformation and elongation. As these are mostly used in the corrosive environment applications we use resisting materials for manufacturing these flanges.
It offers elevated service in the chromium carbide precipitation zone without getting effected. It also offers good service in the severe reducing zones in fluctuating environments.
Specification : ASTM A182 / B564 / A105 / A350 / A694 / B381.
Dimension Standard : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2" (15 NB) to 48" (1200NB)
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
DIN Flanges : DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
JIS Flanges : JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K
BS Flanges : BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.
Stainless Steel Ring Type Joint Flanges : 304, 304L, 304H, 310s, 316, 316L, 316H, 316Ti, 317/317L, 321/321H, 347/347H, 904L, 446.
Duplex Steel Ring Type Joint Flanges : S31803 F51, S32205 F60.
Super Duplex Steel Ring Type Joint Flanges : S32750, S32760.
Carbon Steel Ring Type Joint Flanges : A105, LF2, IS 2062, F42, F46, F52, F60, F65, F70.
Alloy Steel Ring Type Joint Flanges : F1, F5, F9, F11, F12, F22, F91.
High Nickel Alloy : 200, 201, 400, K500, 600, 601, 625, 718, 800, 825, C22, C276, B2, X.
Alloy 20 Ring Type Joint Flanges : Alloy 20.
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