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What is the Classification of Cast Iron Drain Pipe?

Jul. 25, 2020

As a Cast Iron Drain Pipe Manufacturer, share with you.

Cast Iron Drain Pipe

Cast Iron Drain Pipe


1. From the constitution of the piping system, Cast Iron Drain Pipe can be divided into three categories: straight pipes, pipe fittings and auxiliary.

Straight pipe is the main component of the piping system; a wide variety of pipe fittings are the guarantee for the realization of the drainage system (collection, steering, ventilation, closed water and air, energy dissipation and pressure relief, inspection and clearing, etc.); auxiliary main device connection and sealing function.

2. In terms of interface form, cast iron drainage pipes can be divided into two categories: flexible interface and rigid interface.

The flexible joint drainage pipe has strong resistance to flexure, telescopic deformation and earthquake resistance, and has a wide range of applicability.

Rigid joint drainage pipes lack the ability to withstand radial torsion, expansion and contraction deformation and earthquake resistance. When they are subjected to external forces such as building deformation, thermal expansion and contraction, geological vibration, etc., the pipe body is likely to rupture and cause leakage accidents. Eliminated, only used in some low buildings or special occasions.

3. From the connection of the interface, the flexible interface cast iron drainage pipe can be divided into W type without socket (commonly known as clamp type), flange mechanical type A, (double) flange mechanical type B, and flexible socket There are four kinds of equations. The above-mentioned four types of flexible joint drainage pipes are widely used in different countries and regions. At present, three types of W-type, A-type and B-type are commonly used in China.

W-shaped pipe has the advantages of small radial size (without flanges), easy layout, space saving, length can be cut on site to save pipes, convenient disassembly and assembly, maintenance and replacement.

Type A pipe has the advantages of high interface strength, good sealing performance and strong seismic performance.

The double flange (B type) combines the advantages of W-shaped straight pipe length, which can be cut on demand, and the A-type interface has high strength, and is gradually accepted and selected by the market.

Flexible socket type pipes have the advantages of moderate radial size, convenient installation, and strong seismic performance, but require high manufacturing accuracy, accessory accuracy and quality. There are no flexible socket-type products in China, which should be a focus of future product development for manufacturers.

4. In terms of manufacturing and molding methods, straight pipes can be divided into two categories: mechanism and manual sand casting. The mechanism can be divided into metal centrifugal casting and continuous casting. The pipe fittings can be divided into two categories: mechanical modeling and manual sanding.

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