|
2022
|
Invention
|
Double-wall spiral welded pipe and manufacturing method thereof. A double-wall spiral welded pipe... |
|
2020
|
Invention
|
Corner connecting structure for box-like pipeline or container of corrugated steel plates.
A cor... |
|
|
Invention
|
Underground pipeline having two-in-one support pile and pipeline wall and construction method. Di... |
|
|
Invention
|
Corrugated panel punching apparatus. A corrugated panel punching apparatus, comprising a puncher ... |
|
|
Invention
|
Hole-punching device for arc-shaped corrugated plate. Disclosed is a hole-punching device for an ... |
|
|
Invention
|
Production method for arch-shaped corrugated steel plate wall of assembly-type steel structure pi... |
|
|
Invention
|
Corner connection structure for pipeline or container having box-shaped steel corrugated plate st... |
|
|
Invention
|
Box steel structure pipe corrugated steel plate, and steel structure cable utility tunnel. A box ... |
|
|
Invention
|
Corrugated steel sheet rolling punching machine. Provided is a corrugated steel sheet rolling pun... |
|
|
Invention
|
Fabricated anti-floating device for steel structure pipe gallery. Disclosed is a fabricated anti-... |
|
2018
|
Invention
|
Corner connection structure of steel structure comprehensive pipe gallery.
A corner connection s... |
|
|
Invention
|
Corner connection structure for steel-structure pipe rack. A corner connection structure for a st... |
|
|
Invention
|
Circumferential seam sealing structure of underground integrated pipe gallery. Disclosed is a cir... |
|
|
Invention
|
Steel longitudinal seam sealing structure of underground integrated pipe gallery. A steel longitu... |
|
|
Invention
|
Single-compartment utility tunnel and assembled multi-compartment underground comprehensive utili... |
|
2016
|
Invention
|
Box-type pipeline with circumferential obtuse angle connection. A box type duct with circumferent... |
|
2014
|
Invention
|
Large-aperture spiral welded steel pipe with metal linings and manufacturing method thereof. A la... |
|
|
Invention
|
Underground steel-concrete structure pipeline with spiral composite reinforcement ring on inner w... |
