Steel Weld Neck Flange DN400 PN63 S235JRG2 EN 1092-1

Steel Weld Neck Flange DN400 PN63, made in accordance with GOST 12820-80 and EN1092-1, ensures perfect joint tightness. It features a nominal bore of 400 mm and a maximum nominal pressure rating of 63 bar, making it ideal for demanding applications such as industrial systems, power generation, oil refining, and urban infrastructure.

These collar flanges are manufactured from certified St20 (C20 / S235JRG2) steel, complying with GOST 12820-80 and EN1092-1. The process involves hot stamping and forging for optimal metal density and defect prevention, followed by CNC machining for precise dimensions and high-quality sealing surfaces.

Suitable for power and heat supply pipelines, these flanges operate effectively within a wide temperature range of -40°C to +450°C under working pressure. Installation involves collar welding, controlled bolt tightening, and the use of spiral wound gaskets (with protruding or flat surfaces) to ensure a durable, tight connection.

Steel Weld Neck Flange DN400 PN63 is available at UTMK warehouses in Lodz, Krakow, Poznan, Warsaw, Sofia, Varna, and Plovdiv. We offer wholesale and retail options with discounts available for bulk purchases. Delivery can be arranged to any city in Poland or Bulgaria. Contact us or submit an online order form.