CN217540038U - Sleeve tee joint - Google Patents
Sleeve tee joint Download PDFInfo
- Publication number
- CN217540038U CN217540038U CN202220896294.0U CN202220896294U CN217540038U CN 217540038 U CN217540038 U CN 217540038U CN 202220896294 U CN202220896294 U CN 202220896294U CN 217540038 U CN217540038 U CN 217540038U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pipe
- main
- tee
- branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model discloses a sleeve tee bend belongs to the pipe-line apparatus field of making. The sleeve tee joint comprises a tee joint, a first main pipe sleeve, a second main pipe sleeve and a branch pipe sleeve. Wherein, the tee bend includes main pipe and branch pipe. The first connecting end and the second connecting end of the main pipe of the tee joint adopt tapered-hole-shaped grooves and are respectively connected with the first main pipe sleeve and the second main pipe sleeve. The third connecting end of the branch pipe of the tee joint adopts a tapered hole-shaped groove and is connected with a branch pipe sleeve. The utility model discloses a taper hole shape groove realizes that the link of tee bend and sleeve can be for with the pipe diameter, with the wall thickness, be connected with the groove to through the link at tee bend person in charge, branch pipe install the sleeve additional, further can realize that sleeve tee bend and its butt joint between the pipe are complete with the pipe diameter, with the wall thickness, with the groove connection equipment.
Description
Technical Field
The utility model relates to a plumbing installation makes the field, in particular to sleeve tee bend.
Background
The tee joint is an important pipeline accessory in pipeline engineering construction and is mainly used for pipeline branching, turning, reducing and the like. The tee joint selected for the petrochemical pipeline is mainly manufactured by hot extrusion, cold extrusion, welding and other methods. The tee joint formed by extrusion is difficult to assemble with the butt joint pipe, is difficult to adapt to a new full-automatic pipeline welding method, and the welding quality and nondestructive testing results of the tee joint and the butt joint pipe are influenced by the difference between the tee joint and the butt joint pipe.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a sleeve tee bend to solve the problem among the above-mentioned correlation technique. The technical scheme is as follows:
a sleeve tee joint comprises a tee joint, a first main pipe sleeve, a second main pipe sleeve and a branch pipe sleeve;
one end of the first main pipe sleeve is connected with the first connecting end of the main pipe of the tee joint, and the first connecting end of the main pipe of the tee joint adopts a taper hole-shaped groove;
one end of the second main pipe sleeve is connected with the second connecting end of the main pipe of the tee joint, and the second connecting end of the main pipe of the tee joint adopts a taper hole-shaped groove;
one end of the branch pipe sleeve is connected with a third connecting end of the branch pipe of the tee joint, and the third connecting end of the branch pipe of the tee joint adopts a taper hole-shaped groove;
the first main pipe sleeve is matched with the pipe butted with the first main pipe sleeve, the second main pipe sleeve is matched with the pipe butted with the second main pipe sleeve, and the branch pipe sleeve is matched with the pipe butted with the branch pipe sleeve.
In a possible implementation manner, one end of the first main pipe sleeve is connected with the first connecting end of the main pipe of the tee joint in a welding manner;
one end of the second main pipe sleeve is connected with the second connecting end of the main pipe of the tee joint in a welding mode.
In a possible implementation manner, one end of the branch sleeve is connected with the third connecting end of the branch pipe of the tee joint in a welding manner.
In one possible implementation, the first main sleeve and the tube to be butted with the first main sleeve have the same specification, and the length of the first main sleeve is greater than or equal to 200mm.
In one possible implementation, the form of the groove of the first tube end of the first main tube sleeve is the same as the form of the groove of the tube end of the tube abutting against the first main tube sleeve;
the size of the first pipe end of the first main pipe sleeve is the same as the size of the steel pipe end butted with the first main pipe sleeve.
In a possible implementation, the second main tube and the tube to be butted with the second main tube are the same in size, and the length of the second main tube is greater than or equal to 200mm.
In a possible implementation manner, the form of the groove of the second pipe end of the second main pipe sleeve is the same as the form of the groove of the pipe end of the pipe butted with the second main pipe sleeve;
the size of the second pipe end of the second main pipe sleeve is the same as the size of the pipe end of the pipe butted with the second main pipe sleeve.
In one possible implementation, the branch sleeves and the pipe to which they are butted are of the same gauge, the length of the branch sleeves being greater than or equal to 200mm.
In a possible implementation manner, the form of the groove of the third pipe end of the branch pipe sleeve is the same as the form of the groove of the pipe end of the pipe butted with the branch pipe sleeve;
the size of the third pipe end of the branch pipe sleeve is the same as that of the pipe end of the pipe butted with the branch pipe sleeve.
In a possible implementation, the wall thickness of the tee is greater than the wall thickness of the first main-tube sleeve, the wall thickness of the second main-tube sleeve and the wall thickness of the branch-tube sleeve, respectively.
The embodiment of the utility model provides a beneficial effect that technical scheme brought includes at least:
the embodiment of the utility model provides a sleeve tee bend, tee bend and the first sleeve of being responsible for, second that this sleeve tee bend includes are responsible for sleeve and branch pipe sleeve, through the design of taper hole shape groove for they can accomplish equipment and integration prefabrication in the mill, adopt taper hole shape groove can realize that the pipe end of tee bend and sleeve is for with the pipe diameter, with the wall thickness, with the groove connection, reach fastening connection and improve assembly efficiency's purpose. Meanwhile, a section of sleeve pipe is additionally arranged at the connecting end of the main pipe and the branch pipe of the tee joint, and the main pipe sleeve and the branch pipe sleeve are respectively matched with the butt joint pipe, so that the matching assembly between the sleeve tee joint and the butt joint pipe can be further realized, the tee joint is better suitable for full-automatic connection of pipelines, the connection efficiency and the connection quality are improved, the connection defect is reduced, and nondestructive detection is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.
Fig. 1 is a schematic structural diagram of an exemplary sleeve tee according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a bevel between an exemplary first connection end and a third connection end provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of grooves of an exemplary first pipe end to third pipe end according to an embodiment of the present invention.
The reference numerals are respectively given as:
1-a tee joint; 2-a first main pipe sleeve; 3-second main pipe sleeve; 4-branch sleeve; 5-a first tube end; 6-a second tube end; 7-a third pipe end, 8-a first connecting end; 9-a second connection end; 10-third connection end.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The example of the utility model provides a sleeve tee bend, as shown in fig. 1, this sleeve tee bend includes tee bend 1, and first person in charge's sleeve 2, second person in charge's sleeve 3 and branch pipe sleeve 4.
The tee joint 1 comprises a main pipe and a branch pipe, wherein the main pipe is intersected with and communicated with the branch pipe. One end of the first main pipe sleeve 2 is connected with the first connecting end 8 of the main pipe of the tee joint 1, and the first connecting end 8 of the main pipe of the tee joint 1 adopts a taper hole-shaped groove.
One end of the second main pipe sleeve 3 is connected with the second connecting end 9 of the main pipe of the tee joint 1, and the second connecting end 9 of the main pipe of the tee joint 1 adopts a taper hole-shaped groove.
One end of the branch pipe sleeve 4 is connected with a third connecting end 10 of the branch pipe of the tee joint 1, and the third connecting end 10 of the branch pipe of the tee joint 1 adopts a taper hole-shaped groove;
the first sleeve 2 of being responsible for and the pipe utensil looks adaptation that the first sleeve 2 of being responsible for docked, the second is responsible for the sleeve 3 and is responsible for the pipe utensil looks adaptation of sleeve 3 with the second, and branch pipe sleeve 4 and the pipe utensil looks adaptation that docks with branch pipe sleeve 4.
The embodiment of the utility model provides a sleeve tee bend, tee bend 1 that this sleeve tee bend includes and first person in charge sleeve 2, the second is responsible for sleeve 3 and branch pipe sleeve 4, design through taper hole shape groove for they can accomplish equipment and integration prefabrication in the mill, adopt taper hole shape groove can realize tee bend 1 and first person in charge sleeve 2, the second is responsible for the pipe end of sleeve 3 and branch pipe sleeve 4 and be with the pipe diameter, with the wall thickness, with the groove connection, reach fastening connection and improve assembly efficiency's purpose. Meanwhile, a section of sleeve pipe is additionally arranged at the connecting end of the main pipe and the branch pipe of the tee joint 1, and the first main pipe sleeve 2, the second main pipe sleeve 3 and the branch pipe sleeve 4 are respectively matched with the butt joint pipe of the tee joint, so that the matching assembly between the sleeve tee joint and the butt joint pipe of the tee joint can be further realized, the method is better suitable for a full-automatic pipeline connecting method, the connecting efficiency and the connecting quality are improved, the connecting defect is reduced, and the nondestructive detection is convenient.
In a possible implementation manner, one end of the first main pipe sleeve 2 is connected with the first connecting end 8 of the main pipe of the tee 1 in a welding manner; one end of the second main pipe sleeve 3 is connected with the second connecting end 9 of the main pipe of the tee joint 1 in a welding mode, so that the connection tightness and the connection quality are improved.
Optionally, one end of the first main pipe sleeve 2 and the first connection end 8 of the main pipe of the tee 1 may be connected by using a bonding material or other auxiliary connection objects in addition to the welding manner, which is not limited in the embodiment of the present application, and it is sufficient to ensure that one end of the first main pipe sleeve 2 and the first connection end 8 of the main pipe of the tee 1 are connected firmly.
Optionally, one end of the second main-tube sleeve 3 and the second connecting end 9 of the main tube of the tee 1 can be connected by using an adhesive material or other auxiliary connecting objects besides a welding manner, which is not limited in the embodiment of the application, and it is sufficient to ensure that one end of the second main-tube sleeve 3 and the second connecting end 9 of the main tube of the tee 1 are connected firmly, so as to improve connection fastening performance and connection quality.
In a possible implementation mode, one end of the branch sleeve 4 is connected with the third connecting end 10 of the branch of the tee 1 by welding, so that the connection tightness and the connection quality are improved.
Optionally, one end of the branch sleeve 4 and the third connecting end 10 of the branch pipe of the tee 1 can be connected by using a welding method, and can also be connected by using a bonding material or other auxiliary connecting objects, which is not limited in the embodiment of the application, and it is ensured that one end of the branch sleeve 4 is firmly connected with the third connecting end 10 of the branch pipe of the tee 1.
Illustratively, technical indexes such as pipe diameter, length, wall thickness, taper groove form and size of a main pipe and branch pipes of the tee joint 1 can be determined according to design conditions. The specifications of the first main pipe sleeve 2 of the sleeve tee and the pipe butted with the first main pipe sleeve 2 are the same. For example, the length of the first main tube sleeve 2 is greater than or equal to 200mm.
In one possible implementation, the groove form of the first pipe end 5 of the first main pipe sleeve 2 is the same as the groove form of the pipe end of the pipe to which the first main pipe sleeve 2 is butted; the first tube end 5 of the first primary sleeve 2 is the same size as the tube end of the tube that is butted against the first primary sleeve 2.
Wherein, the embodiment of the utility model provides a do not inject the material of the pipe utensil with the first 2 butt joints of being responsible for of sleeve, include but not limited to the steel pipe with the first pipe utensil of being responsible for the 2 butt joints of sleeve.
In one possible implementation, the second main sleeve 3 and the pipe to be butted with the second main sleeve 3 are of the same specification, and the length of the second main sleeve 3 is greater than or equal to 200mm.
In one possible implementation, the form of the groove of the second tube end 6 of the second main tube sleeve 3 is the same as the form of the groove of the tube end of the tube butted with the second main tube sleeve 3;
the second tube end 6 of the second main sleeve 3 is the same size as the tube end of the tube to which the second main sleeve 3 is butted. Wherein, the embodiment of the utility model provides a do not inject the material of the pipe utensil of being responsible for the sleeve 3 butt joint with the second, the pipe utensil of being responsible for the sleeve 3 butt joint with the second includes but not limited to the steel pipe.
In one possible implementation, the branch sleeves 4 of the sleeve tee and the tubing to which the branch sleeves 4 are butted are of the same gauge, for example, the length of the branch sleeves 4 is greater than or equal to 200mm.
Optionally, the form of the bevel of the third pipe end 7 of the branch sleeve 4 is the same as the form of the bevel of the pipe end of the pipe abutting the branch sleeve 4; the third tube end 7 of the branch sleeve 4 is the same size as the tube end that is butted up against the branch sleeve 4. Wherein, the embodiment of the utility model provides a do not prescribe a limit to the material of the pipe utensil with 4 butt joints of branch pipe sleeves, include but not limited to the steel pipe with the pipe utensil of 4 butt joints of branch pipe sleeves.
In a possible realization, the wall thickness of the tee 1 is greater than the wall thickness of the first main tube sleeve 2, the wall thickness of the second main tube sleeve 3 and the wall thickness of the branch tube sleeve 4, respectively.
Illustratively, the tee 1 is made by a hot extrusion method and comprises a main pipe and a branch pipe, and the main pipe and the branch pipe are intersected and communicated.
Illustratively, the nominal outer diameter of the main tube of tee 1 is 1422mm, steel grade X80, according to design conditions. According to the design conditions, the pipe butted with the main pipe of the tee joint 1 is, for example, a steel pipe, the nominal outer diameter of the pipe is 1422mm, the wall thickness of the pipe is 33.8mm, the steel grade is X80, and the pipe end of the steel pipe is machined into a single V-shaped groove with the angle of 25 +/-2.5 degrees and the blunt edge of 1.6 +/-0.8 mm. Thus, the first and second primary sleeves 2, 3 have a nominal outer diameter of 1422mm, a wall thickness of 33.8mm, a steel grade of X80, and a design length of 500mm.
The first pipe end 5 and the second pipe end 6 connected with the butt-jointed steel pipe are machined into a single V-shaped groove with an angle of 25 +/-2.5 degrees and a truncated edge of 1.6 +/-0.8 mm. According to the design conditions, a first connecting end 8 of the tee joint 1 connected with the first main pipe sleeve 2 and a second connecting end 9 of the tee joint 1 connected with the second main pipe sleeve 3 are machined into taper hole-shaped grooves.
The first connecting end 8 and the second connecting end 9 can be shown in fig. 2, T represents the wall thickness of the pipe end of the tee 1, T represents the wall thickness of the steel pipe butted with the tee 1, the straight edge length L1 is 35mm, the angle alpha is 25 +/-2.5 degrees, the angle beta is 20 +/-2.5 degrees, and the blunt edge C is a bevel of 1.6 +/-0.8 mm, for example.
The first tube end 5 of the first main tube sleeve 2 and the second tube end 6 of the second main tube sleeve 3 can be machined into single V-shaped grooves with the angle alpha of 25 +/-2.5 degrees and the blunt edge C of 1.6 +/-0.8 mm as shown in figure 3. T in fig. 3 represents the wall thickness of the steel pipe butted against the tee 1.
Illustratively, the nominal outside diameter of the legs of the tee 1 is 1219mm and the steel grade is X80, according to design conditions. According to the design conditions, the nominal outer diameter of a pipe, such as a steel pipe, butted with the branch pipe of the tee joint 1 is 1219mm, the wall thickness is 26.4mm, the steel grade is X80, and the pipe end of the steel pipe is machined into a single V-shaped groove with the angle of 25 +/-2.5 degrees and the blunt edge of 1.6 +/-0.8 mm.
Thus, the branch sleeve 4 has a nominal outer diameter of 1219mm, a wall thickness of 26.4mm and a steel grade of X80. The design length is 500mm. And a third pipe end 7 connected with the butted steel pipe is machined into a single V-shaped groove with an angle of 25 +/-2.5 degrees and a blunt edge of 1.6 +/-0.8 mm.
According to the design conditions, the third connecting end 10 of the tee 1 connected with the branch sleeve 4 can be machined into a taper hole-shaped groove with a straight edge length L as shown in figure 2 1 Is a groove with the angle alpha of 35mm, the angle alpha of 25 +/-2.5 degrees, the angle beta of 20 +/-2.5 degrees and the blunt edge C of 1.6 +/-0.8 mm. Alternatively, the third tube end 7 of the branch sleeve 4 connected to the tee 1 can be machined as shown in FIG. 3 to form a single V-shaped groove with an angle of 25 + -2.5 degrees and a blunt edge of 1.6 + -0.8 mm.
To sum up, the embodiment of the utility model provides a sleeve tee bend, tee bend and sleeve accomplish at the mill and connect equipment and integration prefabrication, adopt taper hole shape groove can realize that the link of tee bend and sleeve is for being connected with the pipe diameter, with the wall thickness, with the groove, for example the welding.
In addition, the connecting ends of the main pipe and the branch pipes of the tee joint are respectively provided with a section of sleeve pipe, and the main pipe sleeve and the branch pipe sleeve can respectively have the same specification, pipe end groove form and size with the butt joint pipe, so that complete connection and assembly of the sleeve pipe tee joint and the butt joint pipe with the same pipe diameter, the same wall thickness and the same groove can be further realized, the full-automatic connecting method is better suitable for a pipeline, the connecting efficiency and the connecting quality are improved, the connecting defect is reduced, and nondestructive detection is facilitated.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A sleeve tee joint is characterized by comprising a tee joint (1), a first main pipe sleeve (2), a second main pipe sleeve (3) and branch pipe sleeves (4);
one end of the first main pipe sleeve pipe (2) is connected with a first connecting end (8) of a main pipe of the tee joint (1), and the first connecting end (8) of the main pipe of the tee joint (1) adopts a taper hole-shaped groove;
one end of the second main pipe sleeve (3) is connected with a second connecting end (9) of the main pipe of the tee joint (1), and the second connecting end (9) of the main pipe of the tee joint (1) adopts a taper hole-shaped groove;
one end of the branch pipe sleeve (4) is connected with a third connecting end (10) of the branch pipe of the tee joint (1), and the third connecting end (10) of the branch pipe of the tee joint (1) adopts a taper hole-shaped groove;
the first main pipe sleeve (2) is matched with the pipe butted with the first main pipe sleeve (2), the second main pipe sleeve (3) is matched with the pipe butted with the second main pipe sleeve (3), and the branch pipe sleeve (4) is matched with the pipe butted with the branch pipe sleeve (4).
2. The sleeve tee according to claim 1, characterized in that one end of the first main pipe sleeve (2) is connected with the first connecting end (8) of the main pipe of the tee (1) by welding;
one end of the second main pipe sleeve pipe (3) is connected with a second connecting end (9) of the main pipe of the tee joint (1) in a welding mode.
3. A sleeve tee according to claim 1, characterised in that one end of the branch sleeve (4) is connected to the third connecting end (10) of the branch of the tee (1) by welding.
4. A cuff tee according to claim 1, characterized in that said first main tube cuff (2) and the tube to which said first main tube cuff (2) is butted have the same gauge, the length of said first main tube cuff (2) being greater than or equal to 200mm.
5. A cuff tee according to claim 1, characterized in that the form of the groove of the first tube end (5) of the first main tube cuff (2) is the same as the form of the groove of the tube end of the tube abutting the first main tube cuff (2);
the size of a first pipe end (5) of the first main pipe sleeve (2) is the same as that of a pipe end of the pipe butted with the first main pipe sleeve (2).
6. A sleeve tee according to claim 1, characterized in that the second main tube sleeve (3) and the tube to which it is butted (3) are of the same gauge, the length of the second main tube sleeve (3) being greater than or equal to 200mm.
7. A sleeve tee according to claim 1, characterized in that the form of the groove of the second tube end (6) of the second main tube sleeve (3) is the same as the form of the groove of the tube end of the tube abutting the second main tube sleeve (3);
the size of a second pipe end (6) of the second main pipe sleeve (3) is the same as that of a pipe end of the pipe butted with the second main pipe sleeve (3).
8. A cuff tee according to claim 1, characterized in that said branch cuffs (4) and the tubes with which said branch cuffs (4) are butted have the same dimensions, the length of said branch cuffs (4) being greater than or equal to 200mm.
9. A sleeve tee according to claim 1, characterized in that the form of the bevel of the third pipe end (7) of the branch sleeve (4) is the same as the form of the bevel of the pipe end of the pipe abutting the branch sleeve (4);
the size of a third pipe end (7) of the branch pipe sleeve (4) is the same as that of a pipe end of the pipe butted with the branch pipe sleeve (4).
10. A sleeve tee according to any one of claims 1-9, characterised in that the wall thickness of the tee (1) is greater than the wall thickness of the first main sleeve (2), the wall thickness of the second main sleeve (3) and the wall thickness of the branch sleeves (4), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896294.0U CN217540038U (en) | 2022-04-18 | 2022-04-18 | Sleeve tee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896294.0U CN217540038U (en) | 2022-04-18 | 2022-04-18 | Sleeve tee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217540038U true CN217540038U (en) | 2022-10-04 |
Family
ID=83430888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220896294.0U Active CN217540038U (en) | 2022-04-18 | 2022-04-18 | Sleeve tee joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217540038U (en) |
-
2022
- 2022-04-18 CN CN202220896294.0U patent/CN217540038U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4556240A (en) | Corrosion-resistant, double-wall pipe structures | |
| US6517126B1 (en) | Internal swage fitting | |
| US20100133804A1 (en) | Method of replacing pipe couplings | |
| US3873139A (en) | Pipe joint | |
| CN217540038U (en) | Sleeve tee joint | |
| NO335199B1 (en) | Pipe-in-pipe device | |
| US10975990B2 (en) | Apparatus and method for strengthening welded-lap joints for steel pipeline | |
| CN109084105A (en) | Armored concrete propulsion tube ring-groove-type joint connecting structure | |
| CN203477637U (en) | Bimetal composite pipe | |
| CN204647602U (en) | A kind of composite bimetal pipe pipe end linkage structure | |
| CN208871244U (en) | A kind of municipal works draining wear-and corrosion-resistant type pipeline | |
| CN112082014A (en) | Corrosion-resistant connecting joint for oil-gas conveying non-metal pipeline and connecting method | |
| CN102734574A (en) | Pipe joint component and safety locking pipeline connection system comprising same | |
| CN103486341A (en) | Bimetal composite tube | |
| CN211175852U (en) | 90 equal-diameter PE socket elbow for water supply | |
| KR20210074546A (en) | Pipe connection part used for various purposes, and pipe connection method using the same | |
| CN218252309U (en) | Induction heating bent pipe with sleeve | |
| CN221030347U (en) | Multipurpose bridge pile foundation sounding pipe structure | |
| CN212616847U (en) | Corrosion-resistant connecting joint for oil and gas conveying non-metallic pipeline | |
| US3453004A (en) | Apparatus for welding internally-coated tubular members | |
| CN217030253U (en) | Anti-static natural gas conveying anti-corrosion steel pipe | |
| CN202358296U (en) | Device for connecting dosing pipeline and ballast water main pipeline of ship ballast water management system | |
| CN215763888U (en) | Pipeline connector | |
| CN210566810U (en) | Pipe fitting with socket type male and female connectors | |
| CN217683739U (en) | Composite pipe connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |