The Rolled and Forged Weld Neck Flanges are mainly used on heat coupling of pipes when there is possibility of expansion of the section while bending stress on the coupling. Chaudhry Hammer Works Ltd. Offers Rolled and Forged Weld Neck Flanges. Chaudhry Hammer Works Ltd. Is an ISO 9001:2000, 14001:2004 and OHSAS 18001:2007 registered organization. The Rolled and Forged Weld Neck Flanges are manufactured to specifications of ASME B16.5, ASME B16.47, ASMEB16.48, BS EN 1092, BS 4504, API-605, API-590, MSSSP44, DIN 2632 to 2638, DIN 2576, 2642, 2527, and 2566. The flanges cover full range of pressure Ratings of these specifications [150 - 2500 psi for ASME & PN6-PN400 for DIN / EN flanges] non standard flanges are made up to a diameter of 4000 mm and the weight not exceeding 5,000 kgs.