Manhole Flange

 
   Cangzhou Kangtuo Pipeline Manufacturing Co., Ltd. is located in Yanshan County, Cangzhou, Hebei Province, China, the pipeline equipment manufacturing base. It is a professional manufacturer specializing in the development, research, and production of steel pipe fitting series products. The company is north of Beijing and Tianjin, south of Jilu, west of the Beijing-Hongqiao Expressway, east of the Beijing-Shantou Expressway and Huanghua Port, boasts an advantageous geographical location, convenient transportation, abundant talents, and strong technical strength.
The company boasts advanced production processes, equipment, and testing systems. We offer a wide range of products including elbows, reducers, tees, crosses, caps, flanges, bending pipes, connectors, expansion joints, and more. These are extensively used in industries such as oil, chemicals, metallurgy, shipping, papermaking, power, aerospace, water treatment, chemical fibers, construction, and machinery equipment. They fully meet the requirements for pipeline connections.
The company has always adhered to the principles of "quality as the foundation, high credibility based on integrity, high-quality products governed by law, and high technology centered on people," aiming to achieve customer satisfaction. We are sincerely committed to establishing friendly and developing relationships with friends and customers from all over the world, both new and old, for close cooperation and the creation of great undertakings.

A flange is a component that connects two shafts, used for joining pipe ends; there are also flanges used at equipment inlets and outlets for connecting two devices, such as a reducer flange. Flange connection or flange joint refers to a detachable connection formed by the combination of a flange, gasket, and bolt, also known as a flange boss or rim.

Flange Usage: Flanges are always used in pairs. Low-pressure pipelines can use threaded flanges, while those above 4 kg of pressure require welding flanges. Place a sealing gasket between the two flange disks and then secure them with bolts. Flanges of different pressures have varying thicknesses and require different bolts.

Classification Methods of Flanges:

1. By chemical (HG) industry standards:

Overall Flange (IF), Threaded Flange (Th), Plate Flange (PL), Weld Neck Flange (WN), Socket Weld Flange (SO), Blind Flange (SW), Welding Ring Flange (PJ/SE), Weld Neck Ring Flange (PJ/RJ), Lined Flange Cover (BL(S)), Flange Cover (BL).

2. Categorized by petrochemical (SH) industry standards: Threaded Flange (PT), Weld Neck Flange (WN), Slotted Flange (SO), Socket Weld Flange (SW), Lug Flange (LJ), and Flange Cover (not specified).

3. Categorized by mechanical (JB) industry standards: Weld Neck Flanges, Blind Flanges, Plate Flanged Welding Flanges, Weld Ring Plate Flanged Slip-on Flanges, Flanged Plate Slip-on Flanges, Beveled Ring Plate Flanged Slip-on Flanges, and Flange Covers.

4. Divided by national (GB) standards: Weld Neck Flange, Threaded Flange, Blind Flange, Lap Joint Flange, Socket Weld Flange, Ring Type Joint Flange with Weld Neck, Plate Flange with Lap Joint, Ring Type Joint Flange with Plate Flange, Plate Flange with Ring Joint, Flange Cover.