结构钢焊条的统一牌号J350J420G4300J421E4341J421E4311J421X4313J421FeE4314J421Fe13E4324J421Fe16E4324J421Fe18E4324J521ZE4324J422E4303J422GME4303J422FeE4303J422Fe13E4323J422Fe16E4323J422Fe18E4323J422FeZE4323J422CrCuE4303J422CrCuNiE4303J422YE4303J423E4301J424E4304J424Fe14E4327J424Fe16E4327J424Fe18E4327J425E4311J426E4316J426DFE4316J427E4313J427NiE4315J501FeE5014J501Fe15E5024J501Fe18E5024J501Z18E5024J502J502FeE5003J502Fe15E5023J502Fe16E5023J502Fe18E5023J502CuPJ502NiCu421Fe、J422、J422Fe、J426、J427、J502、J506、J506Fe、J507、J507Fe、J507H低合金高强度结构钢焊条J506RH、J507RH、J507Ni、J556、J556RH、J557、J606、J606RH、J607、J607RH耐候钢及其它低合金耐候钢焊条J502NiCu、J502WCu、J502WCu、J506NiCu、J506WCu、J506Mo、J507MoNb结构钢焊条普通焊条J420G.J421.J421Fe.J421X.J421Fe13.J421Fe16.J421Fe18.J421Z.J422.J422Y.J422GM.J420Fe.J422Fe13.J422Fe16.J422Fe18.J422Z.J423.J424.J424Fe14J424Fe16.J424Fe18.J425.J425G.J426.J426X.J426H.G426DF.J426Fe13.j427J427X.J427Ni.J501Fe.J502.J502Fe.J503.J504Fe.J505.J505G.J505MoD.J506.J506X.J506H.J506D.J506DF.J506GM.J506LMA.506Fe.J506Fe-1.J506R.J506RHJ506RK.J506Ni.J506FeNE.J507.J507H.J507X.J507D.J507DE.J507XG.J507Fe.J507TiBLMA.J507R.J507NiTiB.J507GR.J507RH.J507FeNi.J555.J556.J556RHJ556XG.J556CuCrMo.J557.J557Mo.J557MoV.J501Fe15.J501Fe18.J501Z.J501Fe16J502Fe18.J504Fe14.J506Fe16.J506Fe18.J507Fe16J606.J606RH.J607.J607NiJ607RH.J707.J707Ni.J707RH.J707NiW.J757.J757NiJ807.J8O7RH.J857.J857Cr.J857CrNi.J907.J907Cr.j107.J107Cr.J502Cup.J502NiCu.J502WCu.J502CuCrNiJ506WCu.J506NiCu.J506NiCrCu.J507NiCu.G507NiCuP.J507WCu.J507CuP.J507SLA/B.J557SLA/B.J507Mo.J507MoNb.J507Mow.J507MoWNbB.J420G.型号；E4300用途;管道用全位置焊接，交直流两用，抗气孔性好。用于工作温度450°C.工作压力3.9-19MPa的高温。高压电站碳钢管道的焊接。J421型号；E4313特征用途；交直流两用，可全位焊接，工业性能好，再引弧容易。用于焊接低碳钢机构，尤适于薄板小件及短焊缝的间断焊和要求表面光滑的盖面焊。J421X.型号E4313用途；立向下专用焊条，交直流两用，工艺性能好，成型美观，易脱渣。用于一般船用碳钢及镀锌钢焊接，尤其于薄板及间断焊。J421Fe型号E4313特征和用途；***铁粉焊条，交直流两用，可全位焊接，工艺性能好。飞溅小，成型美观。再引弧容易。用于一般船用碳钢结构，尤其于薄板及间断焊和要求表面光滑的盖面焊。J421Fe13E4324用途结构钢焊条的统一牌号J350J420G4300J421E4341J421E4311J421X4313J421FeE4314J421Fe13E4324J421Fe16E4324J421Fe18E4324J521ZE4324J422E4303J422GME4303J422FeE4303J422Fe13E4323J422Fe16E4323J422Fe18E4323J422FeZE4323J422CrCuE4303J422CrCuNiE4303J422YE4303J423E4301J424E4304J424Fe14E4327J424Fe16E4327J424Fe18E4327J425E4311J426E4316J426DFE4316J427E4313J427NiE4315J501FeE5014J501Fe15E5024J501Fe18E5024J501Z18E5024J502J502FeE5003J502Fe15E5023J502Fe16E5023J502Fe18E5023J502CuPJ502NiCu)