China AC DC compatible flux Manufacturers, Suppliers, Factory

GUJIN® warmly welcome you to wholesale ER309L Stainless Steel from our factory. For Stainless steel welding wire, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our Stainless steel welding wire has been well received by many customers and enjoyed a good reputation in many countries. GUJIN® Stainless steel welding wire have characteristic design & practical performance & competitive price, for more information on the Stainless steel welding wire, please feel free to contact us.

For Aluminum alloy welding wire, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our welding wire ER-5356 has been well received by many customers and enjoyed a good reputation in many countries. GUJIN® Aluminum alloy welding wire have characteristic design & practical performance & competitive price, for more information on the Aluminum alloy welding wire, please feel free to contact us.

With years of experience in production SJ-503, GUJIN can supply a wide range of submerged arc welding flux SJ-503. High quality submerged arc welding flux can meet many applications, if you need, please get our online timely service about submerged arc welding flux. In addition to the product list below, you can also customize your own unique submerged arc welding flux according to your specific needs.

Submerged Arc Welding Flux SJ-501 A is a high-performance agglomerated aluminum-rutile type acid sintered flux with a basicity index of approximately 0.5-0.93 and a particle size of 10-60 mesh (about 0.3-2.0mm). It is specially designed for low-alloy steels and high-strength steels (such as ASTM A514, A517), supporting single-wire or multi-wire high-speed welding (up to 100m/h), and is suitable for applications such as small cylinders, LPG tanks, pressure vessels, and shipbuilding. This flux complies with the standards of EN760 SA AR 1 88 AC H5 and AWS A5.17/5.23 F7A0-EL12, providing stable arc, excellent slag detachability, smooth weld seams, and resistance to cracks and pores. It is not sensitive to surface rust and scale, ensuring efficient welding quality and excellent mechanical properties, such as high impact toughness and tensile strength.

SJ-501 submerged arc welding flux is an active aluminum-titanium type acidic sintered flux, designed for high-efficiency welding, providing stable arc combustion and excellent weld quality. The basicity index of this flux is approximately 0.5-0.8, suitable for welding low-carbon steel and low-alloy high-strength structural steel, and performs particularly well in the manufacturing of LPG (liquefied petroleum gas) cylinders. It ensures a fast welding speed (up to more than 70m/h), easy slag removal, low spatter, and enhances the mechanical strength and corrosion resistance of the weld, applicable to industrial applications such as ships, boilers, and pressure vessels.

SJ301 submerged arc welding flux is a high-performance agglomerated calcium-silicate flux designed for efficient welding of low-carbon and low-alloy steels. With a neutral basicity index of 1.0, it delivers stable arc performance, effortless slag detachment, and superior weld bead aesthetics, making it ideal for high-speed applications in industries like pipeline construction, bridge building, and machinery fabrication. Certified under AWS A5.17 F6A0-EL8 and F7A2-EM12K standards, this flux minimizes porosity and ensures strong mechanical properties, such as tensile strength up to 670 MPa when paired with EM12K wire. As a reliable choice from Chinese manufacturers, SJ301 enhances productivity by supporting AC/DC currents and multi-layer welding without interface defects. Perfect for structural projects requiring durability and cost-efficiency.