1. EQUIVALENT STANDARD AND CONFORMITY
- Vietnamese standard: TCVN: 3223-2000-E513
- Vietnamese regulation: QCVN: 21:2015/BGTVT-MW53
- American standard: AWS A5.1 E7016
- Japanese standard: JIS D5016
- NK Registry: KAW53H10
2. CHARACTERISTICS AND APPLICATION
- GL-52 have base cover, which is supplemented with a large amount of Manganese, Silicon and rare earth and so on, to ensure the weld has extremely small impurities, high bearing strength.
- The flour contained in the casing has strongly reduced hydrogen, so the GL-GL-52 welds contain very low hydrogen content, ensuring resistance to hot and cold thermal cracking and high weld toughness.
- GL-52 can weld in all positions with a stable arc, strong pressure, weld pool, ease of peeling and cleaning slag, no slag, porosity, etc. Especially when welding with a DC power source, GL-52 gives excellent results.
- GL-52 welding rods weld low-carbon and low-alloy steels with tensile strengths of 500 N/mm2.
- GL-52 are the best choices for welded structural strength problems and are suitable for ship structures, construction, wharves, heavy load beams, pressure tanks, etc.
3. PACKAGING SPECIFICATION
| Net weight of box (Kg) |
Net weight of barrel (Kg) |
| 5 |
20 |
4. MECHANICAL PROPERTIES OF WELD
| Tensile strength limit (MPa) |
Melting limit (MPa) |
Elongation (%) |
Pendulum impact at -30ºC (J) |
| 490 min |
400 min |
22 min |
27 min |
5. CHEMICAL COMPOSITION OF WELDING METAL LAYER (%)
| C |
Mn |
Si |
P |
S |
| 0.15 max |
1.6 max |
0.75 max |
0.035 max |
0.035 max |
6. DIMENSION OF WELDING RODS AND USED CURRENT (AC & DC)
| Diameter (mm) |
Ø 3.2 |
Ø 4.0 |
Ø 5.0 |
| Length (mm) |
350 |
400 |
400 |
| Welding current (Ampe) |
Horisontal welding |
90-140 |
140-190 |
180-240 |
| Vertical welding |
80-130 |
120-180 |
160-210 |
7. INSTRUCTIONS FOR USE
- Fully preparing the elements of labor safety before welding. Welding power source is stable.
- When the welding rod is moist, welding is vulnerable to smoke, splashed and unstable, weld is clarified, need to dry at 100oC – 150oC in 40 – 60 minutes before use.
- Removing all traces of oil, dust, dirt on the surface of the weld.
- Making sure the weld gap, bevelled edge of welding materials as prescribed to achieve strong weld.
- Selecting the welding line according to the instructions to obtain the deep weld, high working ability.