aluminum mig wire flux core_aluminum mig wire flux core
...
welding rod sizes and uses pdf
Welding rods, an essential component of the welding process, come in various sizes and each size is...
" title=''> ...
7018 welding rod
The 7018 welding rod is revered within the welding industry for its versatility and strength, often...
" title=''>" title=''> ...
In a sector where trust is paramount, manufacturers who also provide comprehensive support and training to their clients stand out. They understand that equipping their consumers with the necessary knowledge and skills to maximize the use of their products is not just a service but a partnership. This commitment to customer education fosters a trusting relationship, ensuring that clients can efficiently tackle even the most complex welding projects.
...
common welding electrodes
Common welding electrodes are fundamental components in metal fabrication , serving as essential too...
Moreover, authoritativeness in the welding world isn’t earned overnight. Reputable suppliers have built their stature by consistently meeting industry standards and innovating their product offerings. Their authority is cemented through certifications that meet global standards such as ISO, as well as endorsements from major industry bodies. By aligning with authoritative suppliers, businesses can inadvertently leverage their expertise and standing in the field.
welding electrodes supplier
...
" title=''>" title='Top Ranking
" title='In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
'>4In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
" title=''>5
welding electrodes manufacturer
'>6Expertise is demonstrated through rigorous testing and adherence to international standards. A competent manufacturer not only meets but often exceeds the industry benchmarks set by organizations such as the American Welding Society (AWS) and the International Organization for Standardization (ISO). These certifications serve as a testament to the quality and reliability of their electrodes. Engaging in research and development further underscores a manufacturer's expertise, allowing them to innovate and improve electrode performance continuously.
welding electrodes manufacturer
77014 welding rod 3_32 8Welding electrodes are a critical component in various industries, ranging from automotive and construction to shipbuilding and infrastructure development. Chinese manufacturers have risen to the occasion, with several companies achieving international acclaim for their expertise, quality, and adherence to safety standards. Their ability to produce a diverse range of electrodes, including mild steel, stainless steel, and low hydrogen electrodes, positions them uniquely on the global stage.
Netizens pay attention
Looked and looked
- welding rod 4mm price
- wholesale kids tricycle
- " title='
One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
'>One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
- mild steel tig rod welding
Reliability and trustworthiness in the realm of welding electrodes are cultivated through years of consistent performance. Leading manufacturers often provide extensive warranties, comprehensive after-sales support, and detailed product documentation. The presence of a dedicated support system ensures that any challenges encountered by end-users are swiftly addressed, fostering a sense of trust. Additionally, manufacturers who actively engage in client education, offering training sessions and workshops, further cement their position as trusted partners in their clients’ industrial journeys.
- e6013 rod
- welding rod 6013 sizes
In conclusion, selecting the right welding electrodes manufacturer involves considering their experience, expertise, authoritativeness, and trustworthiness. An experienced manufacturer offers consistency and historical reliability; expertise ensures precision and innovation in product offering; authoritativeness underscores industry leadership and credibility; while trustworthiness assures compliance, quality, and reliability in every transaction. This holistic approach to selection not only enhances productivity but also contributes to achieving superior welding results that stand the test of time.
- 7018 welding rod 3_32
Latest tags
Links：
6013 electrode specificationaws er70s 6 welding wireeni cl electrodewelding with flux core and gascast iron electrode manufacturersflux core to mig conversioner309024 flux core wirealloy steel to carbon steel welding electrodeer70s-6stainless welding rod sizeser70s 2 1 8gasless stainless steel flux cored wirewelding electrode size selectionhigh carbon welding electrode1 8 mild steel roder309lsiself shielded cored wireflux core vs solid coreself shielded flux cored wire e71t-gsss tigwelding electrode price listmig welding aluminum flux cored wirecarbon steel pipe welding electrode035 hardfacing wiregasless stainless steel welding wireaws e7018 13 32 welding rod 7014stainless steel tig welding rodscast iron to steel welding rodflux core vs stick strength7018 welding 5 32welding electrode selection guide pdfmig weld vs stick weld308 15 welding rodelectrode e 70182.5 mm stainless steel welding rodswelding rod 7018 specificationsstainless steel flux cored gasless welding wire035 gasless flux core wireflux core 900.030 flux core welding wiretype e71t gswhat rod do you use to weld cast iron6010 welding rod amperage 3/32e71t gs flux coreis flux core better than mige71t-gs stainless steeltig filler rod for carbon steelrod welding stainless steele347 welding rodflux core mig weldingtig welding stainless steel without filler rodss tig rodshielded mig wire030 flux core welding wiregasless mig vs arc weldinger 316e7018 weldingstainless arc rods7018 electrode usese6013 rod7013 welding rod uses7018 1h4re2209 16 welding rodwhich is bigger 1 8 or 3 32 welding rode7018 h4r welding rodwelding electrode j422e71t-gs welding wiress arc welding electrodesea2 saw wire71tgs wire7018 1 4 welding rod7018 rod sizescast iron tig welding rod35 flux core wiree71t1 flux cored wireductile iron welding rodflux wire welding tipse308h 163/32 7018 welding rodscarbon rods for welding
...
7018 welding rod
The 7018 welding rod is revered within the welding industry for its versatility and strength, often...
" title=''> ...
In a sector where trust is paramount, manufacturers who also provide comprehensive support and training to their clients stand out. They understand that equipping their consumers with the necessary knowledge and skills to maximize the use of their products is not just a service but a partnership. This commitment to customer education fosters a trusting relationship, ensuring that clients can efficiently tackle even the most complex welding projects.
...
common welding electrodes
Common welding electrodes are fundamental components in metal fabrication , serving as essential too...
Moreover, authoritativeness in the welding world isn’t earned overnight. Reputable suppliers have built their stature by consistently meeting industry standards and innovating their product offerings. Their authority is cemented through certifications that meet global standards such as ISO, as well as endorsements from major industry bodies. By aligning with authoritative suppliers, businesses can inadvertently leverage their expertise and standing in the field.
welding electrodes supplier
...
" title=''>" title='Top Ranking
" title='In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
'>4In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
" title=''>5
welding electrodes manufacturer
'>6Expertise is demonstrated through rigorous testing and adherence to international standards. A competent manufacturer not only meets but often exceeds the industry benchmarks set by organizations such as the American Welding Society (AWS) and the International Organization for Standardization (ISO). These certifications serve as a testament to the quality and reliability of their electrodes. Engaging in research and development further underscores a manufacturer's expertise, allowing them to innovate and improve electrode performance continuously.
welding electrodes manufacturer
77014 welding rod 3_32 8Welding electrodes are a critical component in various industries, ranging from automotive and construction to shipbuilding and infrastructure development. Chinese manufacturers have risen to the occasion, with several companies achieving international acclaim for their expertise, quality, and adherence to safety standards. Their ability to produce a diverse range of electrodes, including mild steel, stainless steel, and low hydrogen electrodes, positions them uniquely on the global stage.
Netizens pay attention
Looked and looked
- welding rod 4mm price
- wholesale kids tricycle
- " title='
One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
'>One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
- mild steel tig rod welding
Reliability and trustworthiness in the realm of welding electrodes are cultivated through years of consistent performance. Leading manufacturers often provide extensive warranties, comprehensive after-sales support, and detailed product documentation. The presence of a dedicated support system ensures that any challenges encountered by end-users are swiftly addressed, fostering a sense of trust. Additionally, manufacturers who actively engage in client education, offering training sessions and workshops, further cement their position as trusted partners in their clients’ industrial journeys.
- e6013 rod
- welding rod 6013 sizes
In conclusion, selecting the right welding electrodes manufacturer involves considering their experience, expertise, authoritativeness, and trustworthiness. An experienced manufacturer offers consistency and historical reliability; expertise ensures precision and innovation in product offering; authoritativeness underscores industry leadership and credibility; while trustworthiness assures compliance, quality, and reliability in every transaction. This holistic approach to selection not only enhances productivity but also contributes to achieving superior welding results that stand the test of time.
- 7018 welding rod 3_32
Latest tags
Links：
6013 electrode specificationaws er70s 6 welding wireeni cl electrodewelding with flux core and gascast iron electrode manufacturersflux core to mig conversioner309024 flux core wirealloy steel to carbon steel welding electrodeer70s-6stainless welding rod sizeser70s 2 1 8gasless stainless steel flux cored wirewelding electrode size selectionhigh carbon welding electrode1 8 mild steel roder309lsiself shielded cored wireflux core vs solid coreself shielded flux cored wire e71t-gsss tigwelding electrode price listmig welding aluminum flux cored wirecarbon steel pipe welding electrode035 hardfacing wiregasless stainless steel welding wireaws e7018 13 32 welding rod 7014stainless steel tig welding rodscast iron to steel welding rodflux core vs stick strength7018 welding 5 32welding electrode selection guide pdfmig weld vs stick weld308 15 welding rodelectrode e 70182.5 mm stainless steel welding rodswelding rod 7018 specificationsstainless steel flux cored gasless welding wire035 gasless flux core wireflux core 900.030 flux core welding wiretype e71t gswhat rod do you use to weld cast iron6010 welding rod amperage 3/32e71t gs flux coreis flux core better than mige71t-gs stainless steeltig filler rod for carbon steelrod welding stainless steele347 welding rodflux core mig weldingtig welding stainless steel without filler rodss tig rodshielded mig wire030 flux core welding wiregasless mig vs arc weldinger 316e7018 weldingstainless arc rods7018 electrode usese6013 rod7013 welding rod uses7018 1h4re2209 16 welding rodwhich is bigger 1 8 or 3 32 welding rode7018 h4r welding rodwelding electrode j422e71t-gs welding wiress arc welding electrodesea2 saw wire71tgs wire7018 1 4 welding rod7018 rod sizescast iron tig welding rod35 flux core wiree71t1 flux cored wireductile iron welding rodflux wire welding tipse308h 163/32 7018 welding rodscarbon rods for welding
...
In a sector where trust is paramount, manufacturers who also provide comprehensive support and training to their clients stand out. They understand that equipping their consumers with the necessary knowledge and skills to maximize the use of their products is not just a service but a partnership. This commitment to customer education fosters a trusting relationship, ensuring that clients can efficiently tackle even the most complex welding projects.
...
common welding electrodes
Common welding electrodes are fundamental components in metal fabrication , serving as essential too...
Moreover, authoritativeness in the welding world isn’t earned overnight. Reputable suppliers have built their stature by consistently meeting industry standards and innovating their product offerings. Their authority is cemented through certifications that meet global standards such as ISO, as well as endorsements from major industry bodies. By aligning with authoritative suppliers, businesses can inadvertently leverage their expertise and standing in the field.
welding electrodes supplier
...
" title='Top Ranking
" title='In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
'>4In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
" title=''>5
welding electrodes manufacturer
'>6Expertise is demonstrated through rigorous testing and adherence to international standards. A competent manufacturer not only meets but often exceeds the industry benchmarks set by organizations such as the American Welding Society (AWS) and the International Organization for Standardization (ISO). These certifications serve as a testament to the quality and reliability of their electrodes. Engaging in research and development further underscores a manufacturer's expertise, allowing them to innovate and improve electrode performance continuously.
welding electrodes manufacturer
77014 welding rod 3_32 8Welding electrodes are a critical component in various industries, ranging from automotive and construction to shipbuilding and infrastructure development. Chinese manufacturers have risen to the occasion, with several companies achieving international acclaim for their expertise, quality, and adherence to safety standards. Their ability to produce a diverse range of electrodes, including mild steel, stainless steel, and low hydrogen electrodes, positions them uniquely on the global stage.
Netizens pay attention
Looked and looked
- welding rod 4mm price
- wholesale kids tricycle
- " title='
One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
'>One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
- mild steel tig rod welding
Reliability and trustworthiness in the realm of welding electrodes are cultivated through years of consistent performance. Leading manufacturers often provide extensive warranties, comprehensive after-sales support, and detailed product documentation. The presence of a dedicated support system ensures that any challenges encountered by end-users are swiftly addressed, fostering a sense of trust. Additionally, manufacturers who actively engage in client education, offering training sessions and workshops, further cement their position as trusted partners in their clients’ industrial journeys.
- e6013 rod
- welding rod 6013 sizes
In conclusion, selecting the right welding electrodes manufacturer involves considering their experience, expertise, authoritativeness, and trustworthiness. An experienced manufacturer offers consistency and historical reliability; expertise ensures precision and innovation in product offering; authoritativeness underscores industry leadership and credibility; while trustworthiness assures compliance, quality, and reliability in every transaction. This holistic approach to selection not only enhances productivity but also contributes to achieving superior welding results that stand the test of time.
- 7018 welding rod 3_32
Latest tags
Links：
6013 electrode specificationaws er70s 6 welding wireeni cl electrodewelding with flux core and gascast iron electrode manufacturersflux core to mig conversioner309024 flux core wirealloy steel to carbon steel welding electrodeer70s-6stainless welding rod sizeser70s 2 1 8gasless stainless steel flux cored wirewelding electrode size selectionhigh carbon welding electrode1 8 mild steel roder309lsiself shielded cored wireflux core vs solid coreself shielded flux cored wire e71t-gsss tigwelding electrode price listmig welding aluminum flux cored wirecarbon steel pipe welding electrode035 hardfacing wiregasless stainless steel welding wireaws e7018 13 32 welding rod 7014stainless steel tig welding rodscast iron to steel welding rodflux core vs stick strength7018 welding 5 32welding electrode selection guide pdfmig weld vs stick weld308 15 welding rodelectrode e 70182.5 mm stainless steel welding rodswelding rod 7018 specificationsstainless steel flux cored gasless welding wire035 gasless flux core wireflux core 900.030 flux core welding wiretype e71t gswhat rod do you use to weld cast iron6010 welding rod amperage 3/32e71t gs flux coreis flux core better than mige71t-gs stainless steeltig filler rod for carbon steelrod welding stainless steele347 welding rodflux core mig weldingtig welding stainless steel without filler rodss tig rodshielded mig wire030 flux core welding wiregasless mig vs arc weldinger 316e7018 weldingstainless arc rods7018 electrode usese6013 rod7013 welding rod uses7018 1h4re2209 16 welding rodwhich is bigger 1 8 or 3 32 welding rode7018 h4r welding rodwelding electrode j422e71t-gs welding wiress arc welding electrodesea2 saw wire71tgs wire7018 1 4 welding rod7018 rod sizescast iron tig welding rod35 flux core wiree71t1 flux cored wireductile iron welding rodflux wire welding tipse308h 163/32 7018 welding rodscarbon rods for welding
Top Ranking
In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
In the dynamic world of manufacturing, welding electrodes play a critical role. Welding electrodes manufacturers are at the forefront of producing high-quality products that ensure robust and reliable welds across various industries. The importance of these manufacturers cannot be overstated, especially in fields reliant on metal fabrication, such as construction, automotive, and shipbuilding. The intricate process of creating welding electrodes involves a blend of expertise, precision, and cutting-edge technology.
welding electrodes manufacturer
'>6
Expertise is demonstrated through rigorous testing and adherence to international standards. A competent manufacturer not only meets but often exceeds the industry benchmarks set by organizations such as the American Welding Society (AWS) and the International Organization for Standardization (ISO). These certifications serve as a testament to the quality and reliability of their electrodes. Engaging in research and development further underscores a manufacturer's expertise, allowing them to innovate and improve electrode performance continuously.
welding electrodes manufacturer
Welding electrodes are a critical component in various industries, ranging from automotive and construction to shipbuilding and infrastructure development. Chinese manufacturers have risen to the occasion, with several companies achieving international acclaim for their expertise, quality, and adherence to safety standards. Their ability to produce a diverse range of electrodes, including mild steel, stainless steel, and low hydrogen electrodes, positions them uniquely on the global stage.
Netizens pay attention
Looked and looked
- welding rod 4mm price
- wholesale kids tricycle
- " title='
One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
'>One of the critical aspects of manufacturing high-quality welding electrodes involves understanding the specific requirements of different welding processes such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), and Flux Cored Arc Welding (FCAW). Each process demands a unique type of electrode, tailored to ensure optimal performance. Expertise in metallurgical science is an essential attribute of a reputable manufacturer, ensuring the produced electrodes adhere to the exacting standards of strength, ductility, and thermal stability.
- mild steel tig rod welding
Reliability and trustworthiness in the realm of welding electrodes are cultivated through years of consistent performance. Leading manufacturers often provide extensive warranties, comprehensive after-sales support, and detailed product documentation. The presence of a dedicated support system ensures that any challenges encountered by end-users are swiftly addressed, fostering a sense of trust. Additionally, manufacturers who actively engage in client education, offering training sessions and workshops, further cement their position as trusted partners in their clients’ industrial journeys.
- e6013 rod
- welding rod 6013 sizes
In conclusion, selecting the right welding electrodes manufacturer involves considering their experience, expertise, authoritativeness, and trustworthiness. An experienced manufacturer offers consistency and historical reliability; expertise ensures precision and innovation in product offering; authoritativeness underscores industry leadership and credibility; while trustworthiness assures compliance, quality, and reliability in every transaction. This holistic approach to selection not only enhances productivity but also contributes to achieving superior welding results that stand the test of time.
- 7018 welding rod 3_32
Latest tags
Links：
- 6013 electrode specificationaws er70s 6 welding wireeni cl electrodewelding with flux core and gascast iron electrode manufacturersflux core to mig conversioner309024 flux core wirealloy steel to carbon steel welding electrodeer70s-6stainless welding rod sizeser70s 2 1 8gasless stainless steel flux cored wirewelding electrode size selectionhigh carbon welding electrode1 8 mild steel roder309lsiself shielded cored wireflux core vs solid coreself shielded flux cored wire e71t-gsss tigwelding electrode price listmig welding aluminum flux cored wirecarbon steel pipe welding electrode035 hardfacing wiregasless stainless steel welding wireaws e7018 13 32 welding rod 7014stainless steel tig welding rodscast iron to steel welding rodflux core vs stick strength7018 welding 5 32welding electrode selection guide pdfmig weld vs stick weld308 15 welding rodelectrode e 70182.5 mm stainless steel welding rodswelding rod 7018 specificationsstainless steel flux cored gasless welding wire035 gasless flux core wireflux core 900.030 flux core welding wiretype e71t gswhat rod do you use to weld cast iron6010 welding rod amperage 3/32e71t gs flux coreis flux core better than mige71t-gs stainless steeltig filler rod for carbon steelrod welding stainless steele347 welding rodflux core mig weldingtig welding stainless steel without filler rodss tig rodshielded mig wire030 flux core welding wiregasless mig vs arc weldinger 316e7018 weldingstainless arc rods7018 electrode usese6013 rod7013 welding rod uses7018 1h4re2209 16 welding rodwhich is bigger 1 8 or 3 32 welding rode7018 h4r welding rodwelding electrode j422e71t-gs welding wiress arc welding electrodesea2 saw wire71tgs wire7018 1 4 welding rod7018 rod sizescast iron tig welding rod35 flux core wiree71t1 flux cored wireductile iron welding rodflux wire welding tipse308h 163/32 7018 welding rodscarbon rods for welding