Steel Compression Double Seal Crimp Flange Fittings
The crimped thread joint is composed of an inner metal ring, the root of turnup flange, an union, and positive and negative threaded sleeves; the connection type is divided into union connection and positive and negative threaded sleeve connection; reinforced steel wires or glass fibres are flipped 180 degrees at the root of the turnup flange.
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Detailed wallpaper types
PVC wallpaper is a popular choice for interior decoration, featuring a surface made primarily of polyvinyl chloride resin. There are three main types:
A. Ordinary Type – This type uses 80g/m² paper as the base and is coated with 100g/m² of PVC resin. The surface is often printed, embossed, or a combination of both, offering a classic look.
B. Foaming Type – Here, the base is 100g/m² paper, with a thicker layer of 300-400g/m² PVC resin. Depending on the expansion ratio, it can be low-foam or high-foam. High-foam wallpapers have an elastic texture and offer some sound absorption benefits.
C. Functional Type – These include water-resistant wallpapers made from glass fiber cloth, ideal for bathrooms and kitchens, and fireproof wallpapers that use asbestos paper as a base, combined with flame-retardant PVC materials.
PVC wallpaper is waterproof and easy to clean, making it a practical option for many spaces.
Next is pure paper wallpaper, which comes in two varieties:
D. Original Wood Pulp Paper – Made from raw wood pulp, this type is known for its strength, smooth surface, and heavier weight per square meter.
E. Recycled Paper – Made from recycled materials, this type is lighter and often has a foamed or semi-foamed surface, but may be less durable than original wood pulp.
Non-woven wallpaper, also known as pulp fiber or wood pulp fiber, is a green and eco-friendly material gaining popularity worldwide. It is made from natural plant fibers like cotton and linen, and does not contain PVC or chlorine. When burned, it produces only carbon dioxide and water, without harmful smoke or odors. It offers a soft touch, breathability, and visual appeal, with a variety of designs ranging from classic to modern.
Fabric surface wallpaper features a top layer made from materials like cloth, silk, or felt, providing a luxurious feel and elegant appearance. Some fabrics reflect light, adding a stylish touch, though they tend to be more expensive and sensitive to stains.
Diatomaceous earth wallpaper is made from the remains of ancient marine plants, giving it unique properties such as moisture control, breathability, and the ability to absorb harmful substances like formaldehyde and VOCs. However, its rough and brittle surface makes it difficult to clean.
Natural material surface wallpaper uses grass, hemp, wood, or leaves on a paper base, offering a rustic and traditional look. However, it is less durable and not suitable for high-traffic areas.
Japanese paper wallpaper, also known as "the king of paper," is soft, lightweight, and durable. Made using traditional techniques, it absorbs moisture based on humidity levels and resists discoloration from light.
Mica wallpaper features a surface made from mica, a silicate crystal known for its insulation, corrosion resistance, and glossy finish. It adds an elegant and luxurious touch to any space.
Silver foil wallpaper uses gold, silver, or aluminum foil for a shiny and vibrant effect. The process is complex, involving multiple steps to achieve the desired finish.
Wall cloth, typically made from high-strength resin, is durable, fire-resistant, and waterproof. It is commonly used in public areas such as hotels, villas, and clubs, where durability is essential.
Overall, each type of wallpaper offers unique characteristics, making it important to choose the right one based on your needs, style, and environment.