Ceilings occupies a very important position in the entire room, and appropriately embellish the top surface, not only to beautify the indoor environment, but also to create a rich and colorful indoor space art image. However, for those owners who do not have a lot of knowledge of renovation projects, how do the ceiling projects work? The following Xiaobian to take everyone to see the acceptance of different materials ceiling.

Plasterboard ceiling inspection

The acceptance of plaster ceilings is similar to that of metal ceilings. First of all, check the appearance of the gypsum ceiling to see if there are blisters, cracks, etc.; secondly check whether the ceiling size and design are in accordance with the specifications; gypsum ceiling special drywall nails, check the nail head with or without brush antirust paint ; Finally check the stability of the ceiling.

Aluminum buckle ceiling inspection

Acceptance of the aluminum buckle ceiling should first pay attention to the basic structure of the ceiling, the fixing method is based on design requirements; ceiling keel can not be distorted, deformation; Second, the connection between the metal panel and the keel is tight; finally check the location of the lamp installation is in line with the specification, The installed lamps must not exceed 3 kg.

PVC ceiling inspection

Ceiling quality acceptance First of all, pay attention to the design of the ceiling elevation of the design of the elastic line, the horizontal allowable deviation of Â± 5mm; next check the ceiling corner plastic corner line is deducted, and the wall around the seam is tight, the gap is uniform; view panel and keel connection Whether tight, the surface should be smooth, no pollution, demolition defects such as missing corners, hammers and other defects; panel joints should be uniform, consistent color; ceiling panel construction brush coating, quality should meet the quality requirements of the wall coating.

Ceiling woodwork acceptance

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Super Duplex Stainless Steel Seamless Pipe

DUPLEX STAINLESS STEEL

Duplex Stainless Steels Available

Yuhong Group supplies LDX2101, 2205, Ferralium 255, Zeron 100 and LDX2507 in the form of plate, sheet, strip, bar, pipe, tubing, pipe fittings, flanges and weld wire.

Duplex Stainless Steel Overview

Duplex Stainless Steels, also referred to as austenitic-ferritic stainless steels, are a family of grades with about equal proportions of ferrite and austenite. These steels have a duplex microstructure which contributes to their high strength and high resistance to stress corrosion cracking. Due to their high content of chromium, nitrogen and molybdenum, duplex steels offer good resistance to local and uniform corrosion. Duplex stainless steels have good weldability.

Today, modern duplex stainless steels can be divided into three groups:
Lean Duplex such as LDX2101
Standard Duplex such as 2205, the work-horse grade accounting for more than 80% of duplex usage
Super Duplex such as Ferralium 255 and Zeron 100 and LDX2507

Of the duplex grades, duplex 2205 is the most widely used. However, the super duplex steels like ZeronÂ® 100 and LDX2507 are excellent for servicing severe corrosive environments, such as offshore and marine applications. Lean duplex 2101 is available as an economic alternative to 300 series stainless steels.

What are the Characteristics of Duplex Stainless Steels ?
Very good resistance to uniform corrosion
Very good resistance to pitting and crevice corrosion
High resistance to stress corrosion cracking and corrosion fatigue
High mechanical strength
Good sulfide stress corrosion resistance
Good abrasion and erosion resistance
Good fatigue resistance high energy absorption
Low thermal expansion
Good weldability

In what Applications are Duplex Stainless SteelsÂ® used ?
Oil and gas equipment
Offshore technology
Seawater desalination plants
Chemical industry, especially when handling chlorides
Flue-gas cleaning
Desalination plants and seawater systems
Pulp and paper industry
Cargo tanks and pipe systems in chemical tankers
Firewalls and blast walls on offshore platforms
Bridges
Storage tanks
Pressure vessels, reactor tanks, and heat exchangers
Rotors, impellers and shafts

Super Duplex Steel Pipe,Super Duplex Stainless Steel Pipe,304 Super Duplex Steel Pipe

YUHONG HOLDING GROUP CO.,LIMITED , https://www.alloypipeline.com