Weld neck flange class 300

weld neck flange class 300

Weld neck flang class 300 is ASME standard,it also has Class 150;Class 300;Class 600;Class 900;Class 1500;Class 2500.weld neck flange is a flange with neck and round pipe transition and butt welded with pipe. weld neck flange is not easy to deform, well sealed, widely used, has the corresponding rigidity and elasticity requirements and reasonable butt welding thinning transition, weld joint distance from the joint surface, joint surface from welding temperature deformation

Advantages of welding neck flange:
weld neck flange is not easy to deform, well sealed, widely used, has the corresponding rigidity and elasticity requirements and reasonable butt-welding thinning transition, weld distance from the joint surface is large, joint surface is free from welding temperature deformation, it adopts a more complex trumpet-shaped structure, suitable for pressure or temperature fluctuation of pipelines or high temperature, high pressure. And low-temperature pipes, generally used for PN greater than 2.5 MPa pipes and valves connection; also used to transport expensive, flammable, explosive medium pipes.

Product parameters
(2) bolt hole central circle diameter: 50mm—-2130mm
(3) bolt hole diameter: 11mm-30mm
(6) flange thickness: 12mm-58mm
(7) outer diameter of pipe: A (17. 2-2032MM) B (14-2020MM)
(8) flange inner diameter: A (18-2036MM) B (15-2024MM)
(9) flange theoretical weight: 0.36kg–234.6kg (DN1800)
According to the production process flange is mainly divided into: forging flange, casting flange, cut flange, rolled flange these four kinds.Beijing Metleader Pipeline Technology Inc. Main product is forging flange.
Advantages of forging flange
Forging flanges are generally lower than those of cast flanges with low carbon content and are not easy to rust.
Improper forging process will also lead to large or uneven grains and hardening cracks.
The advantage of forging is that the internal structure is uniform, and there are no harmful defects such as blowholes and inclusions in the casting.

Making weld neck flange video: