China LWN Flange Manufacturer, Supplier, Factory

Threaded flanges are flanges with internal or external threads that are connected by screwing the threads on the flange to the threads on the pipe or equipment against each other. This type of flange is usually used in low-pressure and low-temperature operating environments because of its relatively low connection strength, but easy installation and removal.

Long Weld Neck Flange (LWN) is an extended form of butt welded flange with a neck, whose neck height is significantly higher than that of ordinary butt welded flanges. The neck is usually designed in a straight cylindrical shape, and the height is adjusted according to the nominal diameter (DN): when DN ≤ 100, the neck height is 229mm, and when DN>100, it is 305mm. The thickness of the neck wall gradually transitions to the thickness of the pipe wall, effectively improving the stress distribution, enhancing the rigidity and bearing capacity of the flange, making it suitable for working conditions with high pressure, high temperature and frequent temperature changes.

High quality 4 in x 4 in fitting pipe stub end is offered by China manufacturer SN Valve. 4 in x 4 in Fitting Pipe Stub End is a pipe stub end with specific dimensions (4 in x 4 in) for connecting to pipes or other equipment. As a connecting element in a piping system, it is capable of connecting, steering, and diverting pipes from each other.

Non standard flanges are relative to standard flanges, which refer to those flanges that do not conform to the standard sizes, shapes or materials stipulated by the state or industry.
Non-standard: the size, shape or material of non-standard flanges usually do not conform to common national or industry standards.
Customization: due to the special nature of non-standard flanges, it usually needs to be customized and produced according to the specific needs of customers.

SN Valve is a leading China socket welding 90 degrees elbow manufacturer. Socket welding 90 degrees elbow plays a role in pipeline connection to change the direction of fluid transmission, so that the fluid can be turned at right angles. It is designed with a socket at one end, and the other end is matched with the outside diameter of the pipeline, for insertion into the main pipe for welding. Socket welding 90 degree elbow is mainly used in small diameter, high pressure piping system, especially in the need to strictly control the risk of leakage and higher strength requirements of the occasion, such as petroleum, chemical, electric power and other industries in the pressure piping system.

High quality marine flange is offered by China manufacturer SN Valve. Marine flange is a standardized connecting part, which is usually used in piping system on ships to achieve reliable connection between pipes and pipelines, pipelines and equipments. Marine flanges are mainly used in the transmission system of water, oil, gas and other fluids on ships to ensure the unobstructed flow of fluids. At the same time, the maintenance and replacement of pipelines will be easier, improving the reliability and safety of ships.