Recycled granules are the abbreviation of recycled plastic granules. Recycled granules belong to the category of plastic granules. Recycled plastics are plastics that have been recycled from used new materials or discarded plastics through a boring machine. A plastic pellet cut into pellets. The recycled granules are mainly classified according to the different raw materials used and the characteristics of the processed granules, and are generally classified into first, second and third grade materials.

The first-grade material means that the raw materials used are scraps that are not grounded, or called chamfers, some are spouts, rubber heads, etc., the quality is also good, that is, it has not been used, in the process of processing new materials. In the middle, the remaining small corners, or the raw materials of quality. The particles processed from the wool have good transparency and the quality can be compared with the new material, so it is a first-class material or a special material.

The secondary material means that the raw material has been used once, except for high-pressure granulation. In the high-pressure granulation, most of the imported large parts are used. If the imported large parts are industrial films, they are not exposed to the wind and the sun, so the quality is also very high. Well, the processed particles have good transparency, and should be judged according to the brightness of the particles and whether the surface is rough.

The tertiary material refers to the raw materials that have been used twice or more. The processed particles are not very good in terms of elasticity and toughness and can only be used for injection molding.

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

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