Set of steel heat preservation steam pipe is made of steel pipe and steel pipe anticorrosion protection, polyurethane foam insulation layer and work within a mix of steel pipe.Steel bushing steel steam composite insulating pipe is suitable for conveying 2.5 MPa, below 350 degrees Celsius steam or other medium, this product is made from steel tube outer protective layer, has high strength, not easy to damage, maintenance is simple construction, long service life.
Insulation structure:
Steel steel insulation pipe insulation structure on the basis of sliding mode is divided into different: sliding inside and outside slide
1, sliding inside: thermal insulation structure by working steel tube, aluminum silicate, drag reduction, microporous calcium silicate, insulating layer, stainless steel fastening tape, aluminum foil reflector, polyurethane thermal insulation layer, coat steel pipe, external anticorrosive coating.
2, outside sliding type: thermal insulation structure by working steel tube, glass wool insulation layer, aluminum foil reflector, tighten belt, stainless steel sliding guide bracket, air thermal insulation layer, protecting steel tube, external anticorrosive coating.
Structural mechanism:
Coating: protection of steel pipe to avoid corrosion, corrosion of steel pipe, prolong the service life of steel pipe.
2. The external protecting tube: protect insulation from the erosion of groundwater, pipe support work and can absorb a certain amount of external load, guarantee the normal work of the pipe work.
3. Polyurethane foam layer: guarantee the medium temperature, ensure the protection pipe surface at room temperature.
4. Block, reflector: ensure that organic foam into inorganic rigid not high temperature resistant layer;To reflect heat from high temperature resistant layer part.
5. Inorganic rigid insulation: high temperature resistance, guarantee and the interface between the organic insulation layer temperature, keep the foam from coking.
6. Drag reduction layer: the guarantee work steel pipe heat bilges cold shrink freedom of movement.
7. Work steel pipe: ensure the normal flow of the medium.
Steel sleeve steel insulation tube from inside to outside is divided into three layers:
The first layer: the work steel pipe layer
Seamless tube is generally selected according to the requirement of the design and the customer (GB8163-87) spiral welded pipe (GB9711-88, SY/T5038-92) and straight seam welded pipe (GB3092-93).Steel tube surface after advanced shot blasting derusting processing, steel pipe descaling grade level can reach the Sa2 GB8923-1988 standard, the surface roughness can reach GB6060.5 R = 12.5 micrometers - 88 standard.
The second: polyurethane thermal insulation layer
With high pressure foaming machine in the steel pipe in a cavity formed between the outer sheath one-off injection of rigid polyurethane foam concentrate.That is commonly known as the "pipe in the foaming process.The role of one is waterproof, the other is heat preservation, 3 it is to support the heat-supply self-respect.When the temperature of the medium for: - 50 ℃, 120 ℃, use rigid poly semicarbazide acid ester foam plastic insulation layer.
The third layer: anti-corrosion steel pipe
Anti-corrosion insulation pipe is a kind of anti-corrosion of steel pipe, and has a good heat preservation performance, widely used in building construction and the promotion, and constantly to improve and popularize.Anti-corrosion insulation pipe with different processing types and methods of different processing methods to determine the tube has different performance and function, and the range of use will change too.
Anti-corrosion insulation pipe production need according to the national standards for production, different processing methods follow the standard is different, but all want to accord with national production standards, and to strictly follow and implement.
Into a steel sleeve insulation steel steam pipe.