SAW Welding Flux

HL-SJ301 Silicon-Calcium Type Sintered Flux

SJ301 is a silicon-calcium type sintered flux for ordinary structural steel, boiler steel and pipeline steel, especially circumferential seam welding.

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HL-SJ301 Silicon-Calcium Type Sintered Flux

Product Positioning

SJ301 is a silicon-calcium type sintered flux for ordinary structural steel, boiler steel and pipeline steel, especially circumferential seam welding.

BasicityApprox. 1.0
Particle size2.0-0.28 mm / 10-60 mesh
Flux typeImplementation Standard: GB/T36037

Suitable Applications

Pipeline steel
Boiler steel
Ordinary structural steel
Circumferential seams
Multi-wire welding

Key Welding Performance Advantages

Stable arc and easy slag removal
Short slag behavior suitable for small-diameter circumferential seams
Clean weld bead appearance
Suitable for AC and DC operation

Compatible Welding Wires

H08A
H08MnA
H08MnMoA

Typical Industries

Pipeline projects
Water pipelines
Gas pipelines
Structural steel fabrication

Handling

Bake flux at 300-350 deg C for 2 hours before use.
Remove rust, oil, moisture and other contaminants from the workpiece before welding.
Confirm final wire, steel grade and welding parameters through procedure testing.

Technical Reference

Typical technical indicators are provided for buyer screening. Final values should be confirmed with the latest technical data sheet and buyer procedure testing.

Implementation Standard: GB/T36037
Compliance Standard: GB/T5293
Equivalent AWS: F6A0-EL8, F7A0-EM12
DIN: BOS 198AC10KM

Chemical Composition Table

Typical flux composition indicators. Confirm current data before purchase.

Item	Typical range
SiO2 + TiO2	25-35%
CaO + MgO	15-25%
Al2O3 + MnO	30-40%
FeO	0%
CaF2	5-15%
S	<= 0.04%
P	<= 0.05%

Mechanical Properties Table

Typical deposited metal results depend on welding wire, steel grade, heat input and approved welding procedure.

Property	Typical result
H08A tensile strength	415-550 MPa
H08A yield strength	>= 330 MPa
H08A elongation	>= 22%
H08A impact toughness	AKV -20 deg C >= 27 J
H08MnA tensile strength	480-650 MPa
H08MnA yield strength	>= 470 MPa
H08MnA elongation	>= 22%
H08MnA impact toughness	AKV -20 deg C >= 27 J

Packaging and Delivery Information

Commercial terms for quotation discussion

Quotation details are prepared according to product model, order quantity, destination port and technical requirements. No retail amounts are shown on the website.

25 kg bagsMOQ: 25 tonsTrade term: FOBPayment: T/TDelivery time: typically around 30 days depending on destination

Inquiry CTA

Need SJ301 flux for your welding line?

Contact Xavier Ma to request a quote, technical data sheet, free sample discussion or application matching support.

FAQ

Common buyer questions about SJ301

Is SJ301 suitable for my welding application?

Share your steel grade, welding wire, plate thickness, welding current and target application. HeLi Welding can review whether SJ301 is a suitable starting option for testing.

Can I request a technical data sheet?

Yes. Use the inquiry form or technical data sheet button and include your company, country and intended application so the sales team can send the relevant product information.

Can this flux be matched with different welding wires?

SJ301 is commonly discussed with H08A, H08MnA, H08MnMoA and equivalent wires. Final wire matching should be confirmed by welding procedure testing and buyer requirements.

What are the standard commercial terms?

Standard information provided for this preview: MOQ 25 tons, 25 kg bags, FOB trade term, T/T payment, and delivery typically around 30 days depending on destination.