|
|
|
|
|
|
| OTHERS |
|
|
|
| ㆍ |
Special Equipment fabrication, |
|
| ㆍ |
Technical Services & Machine welding service |
|
|
| Design Ability |
|
YJTMC has fabricated pipe spools using a mechanized welding system that employs Machine GTAW and Machine FCAW, resulting in high
productivity and superior quality. Our competitive edge in piping spool fabrication is derived from our state-of-the-art production equipment,
including end preparation machines, automated welding machines, and jig fixtures for turning and fit-up processes. These advanced tools ensure
a perfect fit-up condition for mechanized welding, leading to sound weld metal, and also contribute to meeting the project schedule successfully.
YJTMC's Machine GTA Narrow Gap Welding technique has several strong points in Pipe Spool Fabrication, including: |
| ㆍ |
High productivity, more than three times that of Manual GTA welding, particularly for Heavy Wall Pipe & Alloy Materials |
|
| ㆍ |
Low Heat Input, resulting in a Small Heat Affected Zone and low residual stresses on the Weld Area |
|
| ㆍ |
Low Re-work rate, contributing to High Productivity |
|
| ㆍ |
No deformation and uniform weld shrinkage, ensuring High Quality and High Productivity |
|
|
YJTMC's proposal
In order to fully utilize YJTMC's strong points in pipe spool fabrication, it is important to incorporate the appropriate Bevel shape and welding process for Narrow Gap Welding at the outset of the project design phase. |
|
|
|
|
| TF COIL STRUCTURE for K-STAR (Thermo Nuclear Experimental Research) |
|
| YJTMC played a role in the K-STAR project by developing innovative welding jig-fixtures for the TF coil structure in 2004 and performing narrow groove welding for toroidal joints. |
|
|
|
| YJTMC's contributions to the project included: |
| ㆍ |
Designing special welding jig-fixtures |
|
| ㆍ |
Fabricating and installing the jig-fixtures |
|
| ㆍ |
Designing the narrow groove welding joints |
|
| ㆍ |
Successfully performing narrow groove welding using Machine GTAW. |
|
|
|
|
| YJTMC's contributions to the project included: |
| ㆍ |
Designing special welding jig-fixtures |
|
| ㆍ |
Fabricating and installing the jig-fixtures |
|
| ㆍ |
Designing the narrow groove welding joints |
|
| ㆍ |
Successfully performing narrow groove welding using Machine GTAW. |
|
|
|
|
| Weld Cladding (CRA, Hardfacing) |
|
| YJTMC has extensive experience in providing specialized welding services in the petroleum and nuclear industries, and has performed Machine
GTA welding for fabrication and on-site construction. Based on this experience with machine GTA welding technology and tool systems, YJTMC has
developed the technological foundation for producing clad pipes, clad tubes, and clad fittings for use in the oil, gas, chemical, and power generation
industries. |
|
| Production and on-site work |
|
| Since 2002, YJTMC has produced CRA and hardfacing clad pipes and clad fittings by Machine GTA welding, and since 2009, it has been performing
partial internal welding overlay work on nuclear power plant construction sites using inside orbital GTA welding. |
|
| Features |
|
| Clad Items |
| ㆍ |
Clad Pipe(ID & OD), Clad Flange, Clad Fittings(Elbow, Tee, Etc.) |
|
|
|
|
|
|
|
| ㆍ |
Clad Pipe & Fitting: OD_Over NPS6", Length_upto 12 meter |
|
| ㆍ |
Clad Tube: ID_ Over 23mm, Tube Length_ upto 1000 mm length |
|
| ㆍ |
Orbital I.D Cladding_Operation at Site: |
|
| |
★ |
Clad Width: 100mm / Track Setting, |
|
| |
★ |
Diameter: I.D 20 Inch~ I.D 50 Inch |
|
|
|
|
|
| Applicable Clad Materials |
|
|
| ㆍ |
Type 304L, 316L, 904L, Alloy 825, Alloy 625 |
|
|
| ㆍ |
Hardfacing_ERCCoCr-C(Stellite 1) and others(Stellite 6, 12, 20, 21, 31) |
|
|
|
|
|
Applicable Welding
Process & Equipment |
|
|
| ㆍ |
Machine GTA welding with pipe turning roller |
|
| ㆍ |
Double hot wire feeding system on each torch |
|
| ㆍ |
Two torch cladding system for line pipe |
|
| ㆍ |
For Site Operation : Track mounted orbital inside overaly welding system |
|
|
|
|
|
|
| ㆍ |
Desalination Pipe, Pipe & Fittings |
|
| ㆍ |
Nuclear Power Plant : RCL Piping & Feed Water Line |
|
| ㆍ |
Oil & Gas : Sour Gas Piping, Flow Line Piping, Manifold Piping, and etc. |
|
| ㆍ |
Refineries : Line Piping & Bottom Piping |
|
|
|
|
HOME > Business > Others
