Perforated type Welding Neck Flanges are designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. These Welding 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. These Welding Neck Flanges are offered in perforated type design and welding neck pattern. Perforated type Welding Neck Flanges come in different sizes to cater to specific requirement.