Abrasion Resistant Bends

An effective tubing system has to meet certain requirements. Constant transport velocity in the tubing at different loads is one require­ment. Correct transport velocity is another. When the velocity is too low, the material will cause a blockage. When the velocity is to high, this will lead to unnecessary wear and loss of energy

When transporting material in a tubing system turbulent flow will cause noise. Material particles impact the hard tubing walls. Using an elastomer (EPDM- and NBR-rubber) in bends, branch pipes and mounting brackets moderates the sound considerably.

Bends and branch pipes are designed to withstand high negative pressure. The bends are designed with a radial ridge to spread the impact area of the mateial thereby reducing wear and minimizing the risk of blockage.

Every elastomer bend and branch pipe are designed with a plugged hole, that can be used for measuring and inspection. The advantages with the elastomer tubing system are:

  • Low noise
  • Blockage risk reduced
  • Reduced wear

The Manufacturing Process of Wear Resistant Ceramic Lined Steel Pipe and Elbows:
SHS-ceramic steel pipe and elbow create a new generation of abrasion and corrosion resistant engineering pipeline which are produced in a way of Self-propagating High-temperature Synthetic process.

Wear resistant elbows are composed of three layers: ceramic, intermediate, and steel layers. The ceramic layer is formed by molten alumina at a temperature above 2500 degree.

The molten alumina produced from the reaction Fe2O3+2Al=2Fe+Al2O3 spreads on the inside wall of the steel pipe under the influence of a centrifugal force, then solidifies, so the ceramic layer has high density and smooth surface and bonds to the elbow.
Features of Alumina Ceramic
Alumina is a cost effective and widely used material in the family of engineered ceramics. Alumina ceramics have been developed and optimized for maximum wear resistance and corrosion resistance. A high density, diamond like hardness,fine grain structure and superior mechanical strength are the unique properties that make it the material of choice for a wide range of demanding applications. Ceramic has uses similar to Cast Basalt but it has greater resistance to wear in high velocity applications and impact resistance in extreme dynamic systems.

Product: Wear Resistant Elbows/Bends
Size: DN40-DN600
Wall Thickness: 3-10mm
Housing Material: Seamless Carbon Steel
Inner Material: 95% Alumina Ceramic
Ceramic Thickness: 3 to 6 mm
Normal Operation Velocity: 20-35m/s
Normal Operation Temperature: -50—800degree

Obvious performance of wear resistant elbows:

1. Heat-resistance, -50 – 800 Celsius degree
2. Easy Installation and Anti-Scaling
3. Abrasion-Resistance and hardness, is above 9.0
4. Corrosion-Resistance,10 times of stainless steel pipe
5. Economical Cost, 20-30% lower than that of anti-abrasion alloy steel elbows.

Application Fields

  • Paper Making: For conveying pulp.
  • Shipping: For clearing shipping channels and sediment transportation.
  • Metal Mines: For conveying tailings, concentrates and backfill minerals.
  • Coal Preparation Plants: For conveying dense media, mixture and coal slurry.
  • Power Plants: For deashing, deslagging, coal dropping, powder transportation
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