What are the applications of D-type pipes in the field of construction

Source：m.sdmdlgb.com Release date： 2025-05-19

Information summary：D-type pipes (pipes with a semi-circular or D-shaped appearance) are commonly used in the construction industry due to their unique cross-sectional shape, high space utilization, and flexible installation. They are commonly used in the following scenarios: 1、 Drainage system 1. Toilet/kitchen drainage Installed at the corner of the wall or floor, using the curved outer side of the D-shap

D-type pipes (pipes with a semi-circular or D-shaped appearance) are commonly used in the construction industry due to their unique cross-sectional shape, high space utilization, and flexible installation. They are commonly used in the following scenarios:
1、 Drainage system
1. Toilet/kitchen drainage
Installed at the corner of the wall or floor, using the curved outer side of the D-shaped pipe to fit the wall corner, concealed installation can save space and avoid the problem of right angle pipes being easily blocked.
Suitable for drainage connections of washbasins, floor drains, and kitchen sinks, especially suitable for small or irregular spaces.
2. Balcony drainage
Arrange D-shaped pipes along the edge of the balcony, with the curved surface facing upwards to quickly collect rainwater, avoid water accumulation, and reduce the impact of exposed pipes on aesthetics.
2、 Ventilation and air conditioning system
1. Indoor fresh air duct
D-type pipes can be installed on walls or ceilings, using the curved outer side to conform to the wall surface, reducing the vertical space occupied by the pipes, and are suitable for residential or commercial buildings with lower floors.
Commonly used for return air ducts in air conditioning and supply air ducts in fresh air systems, especially suitable for narrow areas such as corridors and hallways.
2. Toilet exhaust
Replacing traditional circular exhaust pipes, wall mounted layout can shorten pipe length, reduce wind resistance, improve exhaust efficiency, and reduce ceiling space occupation.
3、 Gas pipeline
1. Indoor gas transmission
The flat design of D-shaped pipes facilitates concealed installation along the wall or cabinet back, avoiding the problem of traditional circular pipes protruding from the wall and enhancing the aesthetics of the kitchen.
Suitable for low-pressure gas pipelines such as natural gas and liquefied gas, requiring dedicated interfaces to ensure sealing and safety.
4、 Electrical and intelligent pipelines
1. Wall wiring (strong and weak electricity)
D-type pipes can be embedded in walls or installed along wall corners to protect wires, network cables, optical fibers, etc. The curved outer side reduces the risk of edge collision and is easy to thread and maintain.
Commonly used in embedded or exposed installation of smart home systems and monitoring circuits, especially suitable for modern minimalist style decoration.
2. Fire alarm pipeline
Used for laying fire alarm signal lines, emergency lighting lines, etc. Wall mounted layout can reduce the impact on evacuation routes and comply with fire safety regulations.
5、 Decorative pipeline
1. Interior decorative lines
Part of the D-type pipes are made of PVC, metal, or composite materials, and their surfaces can be treated with imitation wood grain, imitation stone, etc., combining pipe function and decorative effect.
For example, as an invisible drainage pipe inside the skirting board, or as a hidden wire for wall decoration, it enhances the sense of spatial design.
2. Landscape engineering
In courtyards and gardens, D-shaped pipes can be used to arrange irrigation pipelines, landscape lighting routes, etc., installed along the edges of the path to reduce damage to vegetation and landscape.
6、 Special scenario applications
1. Transformation of Alien Space
In buildings with sloping roofs or curved walls such as loft and duplex buildings, D-pipes can be installed to fit the curvature of the structure, solving the problem of traditional circular pipes being difficult to adapt to.
2. Industrial style decoration
Metal D-shaped pipes can be used as industrial style decorative elements to showcase mechanical beauty, commonly found in studios, cafes, and other places.

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