Zhongyuan Pipeline: How to Apply Anti-Corrosion Coating and Insulation to Steel Pipes, Spiral Welded Pipes – Spiral Welded Pipe Manufacturer
2022-05-07
There are many methods for insulating corrosion‑resistant steel pipes; the appropriate method should be selected based on specific requirements.
1 , Anti-corrosion steel pipe insulation: coating method for insulated pipelines
Construction method: When using amorphous insulating materials—such as expanded perlite, expanded vermiculite, asbestos fibers, asbestos‑based powdered material, or diatomaceous earth clinker—add a binder (e.g., water glass, cement, refractory clay) or a setting agent (e.g., sodium fluorosilicate or chrysotile). , Select a specific proportion of ingredients, add water, and mix thoroughly to form a cohesive clay mass. This mixture is then applied by hand or with tools onto insulated pipes and equipment; this method is known as the coating insulation technique.
2 , anti-corrosion steel pipe insulation pipe wrapping insulation
( 1 ) Wrap-around insulation involves forming the insulating material into cords or tapes and wrapping them directly around the pipe.
Insulation materials employing this method include slag wool blankets, glass wool blankets, straw ropes, asbestos ropes, or asbestos tapes, among others.
3. Prefabricated insulated anti-corrosion steel pipe insulation pipeline
( 1 ) Pipeline prefabricated insulation structure, typically with a pipe diameter of DN ≤ 80mm millimeters, using a semicircular shell; if the pipe diameter DN ≥ 100mm Millimeters—fan-shaped tiles (curved tiles) or trapezoidal tiles should be used.
The materials used in prefabricated products mainly include foam concrete, asbestos, diatomaceous earth, slag wool, glass wool, rock wool, expanded perlite, expanded vermiculite, calcium silicate, and others.
4 , Anti-corrosion steel pipe insulation pipeline filling insulation method
( 1 ) When the insulating material is in bulk form, this method can be used for insulating removable components.
( 2 During construction, support rings made of round steel are fixed to the pipe wall, with a thickness equal to that of the insulation layer. The rings are then wrapped externally with sheet metal, aluminum sheeting, or wire mesh, and the space is filled with insulating material.
The filling method may also employ precast rigid arc-shaped blocks made of porous materials as the supporting structure, with a spacing of approximately… 900 mm Cut the plain-weave wire mesh to the outer circumference of the pipe insulation, then wrap it around the supporting circumference and fill with mineral wool. The insulating filling structure shall be enclosed in a metal protective casing.
The methods described above are used for insulating corrosion‑resistant steel pipes and can be selected according to your specific requirements.
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