Mahesh Industries, based in Navi Mumbai is a trusted name in the manufacturing of Long Weld Neck (LWN) Flanges, known for precision, strength, and durability. These flanges are designed with an extended neck that provides reinforcement in high-pressure, high-temperature, and critical piping systems. Long Weld Neck Flanges are widely used in industries such as oil & gas, petrochemicals, power plants, and shipbuilding where reliable stress distribution is essential. At Mahesh Industries, each LWN flange is manufactured using premium-grade materials like stainless steel, carbon steel, and alloy steel, adhering to international standards such as ASME, ANSI, and DIN. The Rabale facility is equipped with advanced machinery and a skilled workforce, ensuring top-notch quality, accurate dimensions, and long service life. With a strong focus on engineering excellence, timely delivery, and customer satisfaction, Mahesh Industries has become a preferred supplier of Long Weld Neck Flanges in both domestic and international markets. Product Structure Standard Specification For Long Weld Neck Flanges Dimensions: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings Size : 1/2″ (15 NB) to 48″ (1200NB) Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc. DIN :DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673 BS : BS4504 , BS4504, BS1560, BS10 Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) Material & Grades of Long Weld Neck Flanges : Stainless Steel Long Weld Neck Flanges : ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L Duplex & Super Duplex Steel Long Weld Neck Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61 Carbon Steel Forged Flanges : ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706 Carbon Steel Long Weld Neck Flanges : ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706 Low Temperature Carbon Steel Long Weld Neck Flanges : ASTM A350, LF2, LF3 Alloy Steel Long Weld Neck Flanges : ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91 Copper Alloy Steel Long Weld Neck Flanges : ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200 For Enquiry Send Email Or Contact Mahesh Industries Today!