ASME/ANSI/EN/DIN/BS Long Weld Neck Flange

We specializes in manufacturing the best quality long weld neck flange in varieties of specifications, grades, materials and sizes. The long weld neck flange will be used for chemical, oil mills, petrochemical, mining, refineries, construction, fertilizers, shipbuilding, power plant, steel plant, nuclear power, offshore, oil & gas, defense, paper, breweries, railway, cement, and engineering.

A Integral Flange which is also called Long weld neck flange (LWN flange), is used for high pressure situations, integral hub weld neck flanges are used and for very high pressure cases Long Welding Neck flanges are preferred. In this case, the weld are far from the ring to avoid bending stresses and weld stress being combined.

It is required when an extended neck is required. It acts as a boring extension. It is used in chemical and petroleum industries and used in residential and commercial buildings. It performs well where there is level of stress and temperature fluctuate. Long weld neck flanges are built in a variety of lengths, size and dimensions according to the need of the customers. Many factories make long neck flanges by welding the steel pipe inside the neck of the flange, so the quality of the long neck flanges made is very poor (easy to cause safety accidents), but the price is cheap.

Technical Drawing, Dimensions and weights of Class 150 Long Weld Neck Flange

Technical Drawing, Dimensions and weights of Class 300 Long Weld Neck Flange

Technical Drawing, Dimensions and weights of Class 400 Long Weld Neck Flange

Technical Drawing, Dimensions and weights of Class 600 Long Weld Neck Flange

Technical Drawing, Dimensions and weights of Class 900 Long Weld Neck Flange

Technical Drawing, Dimensions and weights of Class 1500 Long Weld Neck Flange

Technical Drawing, Dimensions and weights of Class 2500 Long Weld Neck Flange

FLUIDO FLANGES TYPES

Download the long weld neck flange weight and price list from"Price List and Technical" or request us.