CN109440955B - Thermal insulation board and manufacturing and mounting method thereof - Google Patents
Thermal insulation board and manufacturing and mounting method thereof Download PDFInfo
- Publication number
- CN109440955B CN109440955B CN201811470535.XA CN201811470535A CN109440955B CN 109440955 B CN109440955 B CN 109440955B CN 201811470535 A CN201811470535 A CN 201811470535A CN 109440955 B CN109440955 B CN 109440955B
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- heat
- insulating
- insulation board
- board
- inner bag
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000009413 insulation Methods 0.000 title claims description 86
- 238000003466 welding Methods 0.000 claims abstract description 42
- 238000005187 foaming Methods 0.000 claims abstract description 39
- 239000012792 core layer Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims description 18
- 238000012946 outsourcing Methods 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001680 brushing effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004590 silicone sealant Substances 0.000 description 3
- 239000006261 foam material Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a heat-insulating plate and a manufacturing and installing method thereof, welding a welding stud to a designated position on an inner bag of the heat-insulating plate and an outer bag of the heat-insulating plate, installing a bracket into the welding stud, fixing the bracket, adhering a fireproof felt plate to the inner bag of the heat-insulating plate and the outer bag of the heat-insulating plate by using glue, smearing refractory clay at the hollow positions of the fireproof felt plate, the inner bag of the heat-insulating plate and the outer bag of the heat-insulating plate, respectively, brushing glue on the contact surfaces of the inner side of the inner bag of the heat-insulating plate and the outer side of the outer bag of the heat-insulating plate and a foaming heat-insulating core layer, putting the inner bag of the heat-insulating plate and the outer bag of the heat-insulating plate into a foaming mold, and filling foaming materials; the heat-insulating plate is spliced correctly, dense spot welding is carried out at the joint, then the joint is fully welded, if a cavity exists, after the joint is completely cooled, foaming materials are poured into the cavity for integral foaming, so that the heat-insulating effect is improved, and the strength of the heat-insulating plate is increased.
Description
Technical Field
The invention relates to a heat insulation board and a manufacturing and installation method thereof.
Background
The joint connection mode of heated board seam often adopts PVC structure, plug-in type structure, layering connection structure, eccentric hook structure etc. connection mode, and these structure seam departments are sealed through scribbling silicone sealant, and the phenomenon such as seepage, sealant mould can not appear in the unavoidable after a long time, makes the heat preservation effect of heated board worsen, breeds the bacterium, influences quick-freeze product's quality.
Leakage at the joint of the heat-insulating plate causes leakage of cold in the warehouse, temperature in the warehouse is increased, freezing time of frozen products is prolonged, productivity of equipment is reduced, energy consumption is increased if the constant productivity is to be maintained, and cost is increased. If water permeates into the foaming heat-insulating core layer of the heat-insulating board at the joint, the heat-insulating effect of the heat-insulating board can be reduced. If the silicone sealant at the joint of the heat-insulating plate is mildewed, bacteria can be bred, so that bacteria of products frozen by quick-freezing equipment exceed the standard. The inner and outer coating materials of the original adopted heat insulation board are foaming heat insulation core layers, generally 0.6mm or 0.7mm, and the structures cannot be fully welded due to larger gaps and thinner plates.
In order to reduce welding deformation, the inner and outer wrapping materials of the heat-insulating plate are changed into 1.5mm, so that the one-time cost is increased, and in addition, the foaming heat-insulating core layer can be burnt due to the high temperature generated by welding, and the foaming heat-insulating core layer can be stripped from the inner and outer wrapping of the heat-insulating plate.
Disclosure of Invention
The invention aims to overcome the defects and provide the heat-insulating plate with improved heat-insulating effect and increased strength and the manufacturing and mounting method thereof.
The aim of the invention is achieved by the following technical scheme: the utility model provides an insulation board, includes insulation board inner bag and insulation board outsourcing, is equipped with foaming insulation sandwich layer between insulation board inner bag and the insulation board outsourcing, has the welding double-screw bolt on the inside wall of insulation board inner bag and insulation board outsourcing, installs the support that is used for fixed inside insulation sandwich layer on the welding double-screw bolt, is through the all welded mode between insulation board inner bag and the insulation board inner bag, between insulation board outsourcing and the insulation board outsourcing to connect the installation into the thermal insulation storehouse body.
The invention further improves that: the fireproof felt plates are adhered on the inner package of the heat-insulating plate and the outer package of the heat-insulating plate, fire clay is smeared at the hollow positions of the inner package of the heat-insulating plate and the outer package of the heat-insulating plate, and the heat-insulating core layers of the rest surfaces are not up to the edges of the inner package and the outer package.
The invention further improves that: the heat preservation core layer of the four peripheral surfaces of the heat preservation plate does not reach the inner wrapping edge and the outer wrapping edge.
The invention further improves that: fireproof felt plates are adhered to the inner bags of the heat preservation plates and the outer bags of the heat preservation plates, and fire resistant mud is smeared at the hollow positions of the fireproof felt plates and the inner bags of the heat preservation plates and the outer bags of the heat preservation plates.
The manufacturing and installing method of the heat insulation board comprises the following specific steps:
A. manufacturing an insulation board:
a. welding the welding studs to appointed positions on the inner package of the heat insulation board and the outer package of the heat insulation board;
b. installing the bracket into the welding stud;
c. fixing the bracket by using nuts, and adhering the fireproof felt plate on the inner bag of the heat-insulating plate and the outer bag of the heat-insulating plate on the bottom surface by using glue;
d. then coating refractory clay at the hollow positions of the fireproof felt plate and the heat-insulating plate inner bag and the heat-insulating plate outer bag;
e. respectively coating glue on the contact surface between the inner side of the inner bag of the heat-insulating board and the outer side of the heat-insulating board and the foaming heat-insulating core layer;
f. placing the inner package of the heat-insulating plate and the outer package of the heat-insulating plate into a foaming mold, filling foaming materials, and forming a foaming heat-insulating core layer by the foaming materials;
B. and (3) installing an insulation board:
a. when the two heat-insulating board splicing pairs are provided with cavities, the heat-insulating boards are correctly spliced, and intensive spot welding is respectively carried out at a first joint of the inner bags of the two heat-insulating boards and a second joint of the outer bags of the heat-insulating boards;
b. then, the first joint and the second joint are respectively fully welded;
c. after the welding line is completely cooled, pouring foaming materials into the cavity to carry out integral foaming;
d. when the two heat-insulating board splicing pairs have no cavity, the heat-insulating board splicing pairs are correct, and intensive spot welding is respectively carried out at the third joint and the fourth joint;
e. and then the third joint and the fourth joint are respectively fully welded.
Compared with the prior art, the invention has the following advantages:
the invention adopts welding connection, avoids the phenomena of leakage, mildewing of sealant and the like, improves the heat preservation effect, ensures that the inside of the refrigeration equipment is cleaner and more sanitary, improves the quality of quick-frozen products and increases the strength of the heat preservation plate.
Description of the drawings:
FIG. 1 is a schematic diagram of a structure of a heat-insulating board with three face ends hollowed out of foaming material, a fireproof felt plate stuck on the bottom surface and fire clay coated;
FIG. 2 is a schematic structural view of a foam material with four side end hollows of an insulation board;
fig. 3 is a schematic diagram of a structure of a fire-proof felt plate and fire-proof mud coated on four sides of an insulation board;
FIG. 4 is a schematic connection diagram of foam material with the end face of the insulation board hollowed out;
FIG. 5 is a schematic illustration of the connection of an insulation board to a sink end plate;
reference numerals in the drawings: 1-heat preservation board inner package, 2-foaming heat preservation sandwich layer, 3-heat preservation board outer package, 4-support, 5-nut, 6-welding double-screw bolt, 7-fire prevention felt board, 8-fire clay, 9-cavity, 10-first seam, 11-second seam, 12-third seam, 13-fourth seam, 14-basin end plate.
The inner package of the heat-insulating plate and the outer package of the heat-insulating plate have protection and connection purposes; the foaming heat-insulating core layer plays a role in heat insulation; the welding stud is used for positioning; the support prevents the inner and outer layers of the heat-insulating plate from peeling the foaming heat-insulating core layer; the hexagonal nut plays a role of a fixing bracket; the fireproof felt plate and the fireproof mud play a fireproof role.
The specific embodiment is as follows:
for the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. Elements and features described in one embodiment of the invention may be combined with elements and features shown in one or more other embodiments. It should be noted that the illustration and description of components and processes known to those of ordinary skill in the art, which are not relevant to the present invention, have been omitted for clarity. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the invention without any inventive effort, are intended to fall within the scope of the invention.
As shown in fig. 1, an insulation board comprises an insulation board inner bag 1 and an insulation board outer bag 3, a foaming insulation core layer 2 is arranged between the insulation board inner bag 1 and the insulation board outer bag 3, welding studs 6 are welded on the inner side walls of the insulation board inner bag 1 and the insulation board outer bag 3, a support 4 is arranged on the welding studs 6, the insulation core layer 2 of three-face ends of the insulation board is not up to the inner bag and the outer bag edge, fireproof felt plates 7 are adhered on the insulation board inner bag 1 and the insulation board outer bag 3 on the bottom surface, and fireproof mud 8 is smeared at the hollow positions of the fireproof felt plates 7 and the insulation board inner bag 1 and the insulation board outer bag 3.
As shown in fig. 2, the insulation board comprises an insulation board inner bag 1 and an insulation board outer bag 3, a foaming insulation core layer 2 is arranged between the insulation board inner bag 1 and the insulation board outer bag 3, welding studs 6 are welded on the inner side walls of the insulation board inner bag 1 and the insulation board outer bag 3, the welding studs 6 are welding studs for energy storage welding, a support 4 is arranged on the welding studs 6, the support 4 is a bending corner piece, and the insulation core layer 2 of four sides of the insulation board does not reach the edges of the inner bag and the outer bag.
As shown in fig. 3, an insulation board comprises an insulation board inner bag 1 and an insulation board outer bag 3, a foaming insulation core layer 2 is arranged between the insulation board inner bag 1 and the insulation board outer bag 3, welding studs 6 are welded on the inner side walls of the insulation board inner bag 1 and the insulation board outer bag 3, a support 4 is arranged on the welding studs 6, fireproof felt plates 7 are adhered on the insulation board inner bag 1 and the insulation board outer bag 3 on four sides of the insulation board, and fire clay 8 is smeared at the hollow positions of the fireproof felt plates 7 and the insulation board inner bag 1 and the insulation board outer bag 3.
Manufacturing an insulation board: welding a welding stud 6 to the appointed position on the inner package 1 of the heat-insulating board and the outer package 3 of the heat-insulating board, installing a bracket 4 into the welding stud 6, fixing the bracket 4 by using a nut 5, wherein the nut 5 can be a 1-type hexagonal nut, pasting a fireproof felt plate 7 on the inner package 1 of the heat-insulating board and the outer package 3 of the heat-insulating board at the appointed position by using silicone sealant, smearing refractory mortar 8 at the hollow positions of the fireproof felt plate 7 and the inner package 1 of the heat-insulating board and the outer package 3 of the heat-insulating board, respectively brushing special glue on the contact surfaces of the inner side of the inner package 1 of the heat-insulating board and the inner side of the outer package 3 of the heat-insulating board and the foaming heat-insulating core layer 2, putting the inner package 1 of the heat-insulating board and the outer package 3 of the heat-insulating board into a special foaming mold, and filling the foaming heat-insulating core layer 2.
And (3) installing an insulation board: when the two heat-insulating board splice pairs are provided with the cavity 9, as shown in fig. 2 and 4, the heat-insulating board splice pairs are correctly shown in fig. 4, intensive spot welding is respectively carried out at the first joint 10 of the inner bag 1 of 2 heat-insulating boards and the second joint 11 of the outer bag 3 of the heat-insulating boards, then the first joint 10 and the second joint 11 are respectively fully welded, and after the welding is completely cooled, polyurethane foaming materials 2 are poured into the cavity 9 for integral foaming; when two heat-insulating boards are spliced without the cavity 9, for example, when the bottom surface of the heat-insulating board is spliced with the water tank end plate 14, the heat-insulating board is spliced correctly according to fig. 5, intensive spot welding is respectively carried out at the third joint 12 and the fourth joint 13, and then full welding is carried out at the third joint 12 and the fourth joint 13; when one surface end of one heat-insulating plate is scratched with the empty foaming material, the connecting surface of the other heat-insulating plate is a convex surface, the convex part is matched with the part of the scratched empty foaming material, the two heat-insulating plates are spliced correctly without cavities, dense spot welding is carried out at the joint, and then the joint is fully welded.
The invention improves the heat preservation effect and increases the strength of the heat preservation plate.
Finally, it should be noted that: although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Furthermore, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, means, method and steps described in the specification. Those of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, means, methods, or steps, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, apparatuses, means, methods, or steps.
Claims (5)
1. An insulation board, characterized in that: including heated board inner bag (1) and heated board outsourcing (3), be equipped with foaming heat preservation sandwich layer (2) between heated board inner bag (1) and heated board outsourcing (3), there is welding double-screw bolt (6) on the inside wall of heated board inner bag (1) and heated board outsourcing (3), install on welding double-screw bolt (6) and be used for fixed inside heat preservation sandwich layer's support (4).
2. An insulation board according to claim 1, wherein: the fireproof felt plate is characterized in that fireproof felt plates (7) are adhered to the insulation board inner bag (1) and the insulation board outer bag (3) on at least one side of the insulation board, fireproof mud (8) is smeared at the cavity of the insulation board inner bag (1) and the insulation board outer bag (3), and the insulation core layers (2) on the other sides are not covered on the edges of the inner bag and the outer bag.
3. An insulation board according to claim 1, wherein: the heat preservation core layer (2) of the four peripheral surfaces of the heat preservation plate does not reach the inner wrapping edge and the outer wrapping edge.
4. An insulation board according to claim 1, wherein: fireproof felt plates (7) are adhered to the periphery of the heat-insulating board inner bag (1) and the heat-insulating board outer bag (3), and fireproof mud (8) is smeared at the hollow positions of the fireproof felt plates (7) and the heat-insulating board inner bag (1) and the heat-insulating board outer bag (3).
5. A thermal insulation board and method of making and installing according to claim 2, wherein: the method comprises the following specific steps:
A. manufacturing an insulation board:
a. welding the welding stud (6) to the appointed position on the heat insulation board inner bag (1) and the heat insulation board outer bag (3);
b. mounting the bracket (4) into the welding stud (6);
c. fixing the bracket (4) by using a nut (5), and adhering the fireproof felt plate (7) on the heat-insulating plate inner bag (1) and the heat-insulating plate outer bag (3) on the bottom surface by using glue;
d. then fire clay (8) is smeared at the holes of the fireproof felt plate (7), the heat-insulating plate inner bag (1) and the heat-insulating plate outer bag (3);
e. glue is respectively coated on the contact surface between the inner side of the inner bag (1) of the heat insulation board and the inner side of the outer bag (3) of the heat insulation board and the foaming heat insulation core layer (2);
f. placing the heat-insulating board inner bag (1) and the heat-insulating board outer bag (3) into a foaming mold, filling foaming materials, and forming a foaming heat-insulating core layer (2) by the foaming materials;
B. and (3) installing an insulation board:
a. when the two heat-insulating board splicing pairs are provided with the cavities (9), the heat-insulating boards are correctly spliced, and intensive spot welding is respectively carried out at the first joint (10) of the two heat-insulating board inner bags (1) and the second joint (11) of the heat-insulating board outer bags (3);
b. then, the first joint (10) and the second joint (11) are respectively fully welded;
c. after the welding line is completely cooled, pouring foaming materials into the cavity (9) for integral foaming;
d. when the two heat-insulating board splicing pairs do not have the cavity (9), the heat-insulating boards are correctly spliced, and intensive spot welding is respectively carried out at the third joint (12) and the fourth joint (13);
e. and then the third joint (12) and the fourth joint (13) are respectively fully welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470535.XA CN109440955B (en) | 2018-12-04 | 2018-12-04 | Thermal insulation board and manufacturing and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470535.XA CN109440955B (en) | 2018-12-04 | 2018-12-04 | Thermal insulation board and manufacturing and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109440955A CN109440955A (en) | 2019-03-08 |
| CN109440955B true CN109440955B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811470535.XA Active CN109440955B (en) | 2018-12-04 | 2018-12-04 | Thermal insulation board and manufacturing and mounting method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN109440955B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111319273A (en) * | 2020-03-03 | 2020-06-23 | 刘小英 | Nano insulation board scarf joint device |
| CN113043618A (en) * | 2021-03-25 | 2021-06-29 | 共享装备股份有限公司 | Assembling method of FDM printing product |
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| JP2001348978A (en) * | 2000-06-08 | 2001-12-21 | Showa Denko Kk | Heat insulating panel for partition wall |
| EP1589157A1 (en) * | 2004-04-20 | 2005-10-26 | Felix Schuh & Co. GmbH | Joint between two construction parts |
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| CN102926472A (en) * | 2012-11-07 | 2013-02-13 | 沈阳建筑大学 | Light metal thermal-bridge-free sandwich panel |
| CN203947606U (en) * | 2014-06-20 | 2014-11-19 | 济南正恒聚氨酯材料有限公司 | Inorganic modified composite insulation boards |
| CA2942807A1 (en) * | 2014-03-28 | 2015-10-01 | Public Joint Stock Company "Transneft" | Method for anti-fire insulation and thermal insulation of welded joints of pre-insulated pipes during above-ground pipeline laying |
| CN209227811U (en) * | 2018-12-04 | 2019-08-09 | 南通四方节能科技有限公司 | A kind of insulation board |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060096205A1 (en) * | 2004-11-09 | 2006-05-11 | Griffin Christopher J | Roofing cover board, roofing panel composite, and method |
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2018
- 2018-12-04 CN CN201811470535.XA patent/CN109440955B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001348978A (en) * | 2000-06-08 | 2001-12-21 | Showa Denko Kk | Heat insulating panel for partition wall |
| EP1589157A1 (en) * | 2004-04-20 | 2005-10-26 | Felix Schuh & Co. GmbH | Joint between two construction parts |
| CN102251637A (en) * | 2011-02-28 | 2011-11-23 | 唐山北极熊建材有限公司 | Production process and structure of reverse-beaten porcelain tile ultralight foam cement heat-insulation plate |
| CN102926472A (en) * | 2012-11-07 | 2013-02-13 | 沈阳建筑大学 | Light metal thermal-bridge-free sandwich panel |
| CA2942807A1 (en) * | 2014-03-28 | 2015-10-01 | Public Joint Stock Company "Transneft" | Method for anti-fire insulation and thermal insulation of welded joints of pre-insulated pipes during above-ground pipeline laying |
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| CN209227811U (en) * | 2018-12-04 | 2019-08-09 | 南通四方节能科技有限公司 | A kind of insulation board |
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| Publication number | Publication date |
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| CN109440955A (en) | 2019-03-08 |
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