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GB Base MetalWelding MethodProduct MarkStandardCharacteristics and Applications
Q355 EH36Shielded Metal Arc WeldingJL-E7018-1GB/T 5117 E5018-1It is a low-hydrogen potassium-type iron powder manual welding electrode with high deposition efficiency. It features stable arc performance, good shape formation, fine corrugation, less spatter, easy deslagging, and excellent resistance to porosity. It exhibits outstanding low-temperature impact toughness at -50°C.
Submerged Arc WeldingJL-WH10Mn2/JL-SJ101GB/T 5293 S49A4 FB-SU34Submerged arc welding wire/flux combination for Q355/EH36 steel structures, suitable for shipbuilding and ocean engineering.
Active Gas Shielded Arc WeldingJL-ER50-GGB/T8110 G50A4 M21 ZSN1Gas shielded welding wire for carbon steel and low-alloy steel structures of corresponding strength grades.
Flux-Cored Arc WeldingJL-YJ711NiGB/T 10045 T494T1-1C1AFlux-cored welding wire with good low-temperature toughness for shipbuilding and offshore structures.
Q420 Q460Shielded Metal Arc WeldingJL-J558NiGB/T 5117 E5518-N2Low-alloy high-strength steel welding electrode for Q420/Q460 grade steels.
Submerged Arc WeldingJL-WENi1K/JL-SJ107GB/T 5293 S55A4 FB-SUN21Submerged arc welding wire/flux combination for high-strength low-alloy steels with good low-temperature toughness.
Active Gas Shielded Arc WeldingJL-ER55-GGB/T 8110 G55A4 M21 SN2Gas shielded welding wire for Q420/Q460 grade structures.
Flux-Cored Arc WeldingJLF-81K2GB/T 10045 T55 6T1-1 C1 A-N3Flux-cored wire for high-strength steel structures requiring low-temperature impact toughness.
Q500Shielded Metal Arc WeldingJL-J607RHGB/T 32533 E5915-G PLow-hydrogen high-strength steel electrode suitable for Q500 grade steel structures.
Submerged Arc WeldingJL-WEF2/JL-SJ102GB/T 5293 S57A4 FB-SUGN1M3Submerged arc welding wire/flux for Q500 grade high-strength steel structures.
Active Gas Shielded Arc WeldingJL-ER62-G(N2M3T)GB/T 39281 G62A4 M21 ZN2M2TGas shielded welding wire for high-strength steel structures.
Flux-Cored Arc WeldingJL-F91K2CGB/T 36233 T62 4 T1-1C1 A-N3M1Flux-cored wire for Q500 grade high-strength structures.
Q690Shielded Metal Arc WeldingJL-J807RH(JL-J807)GB/T 32533 E7815-GJL-J807 is a low-alloy, high-strength steel welding electrode with a low-hydrogen sodium-type flux coating. It enables all-position welding using DC reverse polarity and exhibits excellent welding processability.
Submerged Arc WeldingJL-WEM4/JL-SJ107GB/T 36034 S76A4U FB-SUGN5M3It is a submerged arc welding wire for 800MPa-grade high-strength steel. During welding, it exhibits stable arc burning, easy deslagging, and good shape formation.
Active Gas Shielded Arc WeldingJL-ER80-GGB/T 39281 G76A4 M21 ZN4M3TThe welding wire is an 800MPa-grade low-alloy steel wire, producing less spatter and stable arc during welding.
Flux-Cored Arc WeldingJL-F111K3CGB/T 36233 T76 4 T1-1 C1 A-N3M2It is a titanium-type flux-cored welding wire, with soft and stable arc, less spatter, and easy deslagging.
Q355Submerged Arc Welding (Fcb Multi-Wire Welding)JL-WH10Mn2A/JL-SJ103(Front flux)/JLSJ104 (Back flux)GB/T 5293 S 49A4 CG-I-SU43Used for FCB multi-wire submerged arc welding of Q355 steel plates in shipbuilding.

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