Chenggong Welding – The Best Solutions for Industrial Welding Materials

About Chenggong

Chenggong Welding Materials Co., Ltd. was established in 2009 and is located in Qingdao, Shandong Province — one of China’s most economically developed coastal cities. Adjacent to Qingdao Port, one of the busiest ports in China, we enjoy a superior geographical location and convenient transportation for global logistics.

We are a professional manufacturer of welding electrodes, welding wires, and various types of welding flux. Our factory produces a wide range of products under the brand "Tensileweld", including stainless steel, alloy steel, aluminum alloy, and copper alloy welding wires; carbon steel, nickel alloy, copper alloy, and cast iron welding electrodes; flux-cored wires, gouging carbon rods, silicate, lead, and lead products.

With strong R&D teams and industry-leading production equipment, we ensure stable quality and meet the diverse needs of industries such as petrochemicals, shipbuilding, pressure vessels, automotive, bicycles, and aluminum formwork. Our products are exported to the USA, UK, Italy, Poland, Spain, Russia, Brazil, Mexico, South Africa, and more than 40 countries worldwide.

ISO 9001 Certified CE Approved ABS & AWS Certified CCS & DB Approved

Our Products

High-performance welding materials engineered for reliability, durability, and industrial excellence. All products meet international standards and are widely used across critical sectors.

Stainless Steel Welding Rod

E309-16, A302 models for dissimilar metals. Ideal for welding iron to stainless steel with excellent crack resistance and high-temperature performance.

• AWS A5.4 Certified
• Diameter: 2.5mm – 5.0mm
• Packaging: 5kg/box, 25kg/carton

Carbon Steel Welding Electrode

High deposition rate electrodes for structural steel welding. Stable arc, low spatter, and excellent slag control.

• E6013, E7018 models available
• AWS A5.1 / A5.5 Compliant
• Ideal for shipbuilding & construction

Nickel Alloy Welding Electrode

Designed for high-temperature and corrosive environments. Used in petrochemical and power generation industries.

• ENiCrFe-3, ENiCu-7 available
• Excellent thermal fatigue resistance
• CE & ISO 9001 certified

Cast Iron Welding Electrode

Specialized for repairing cast iron components without preheating. Minimizes cracking and ensures machinability.

• EZNi-1, EZNiFe-1 models
• Low hydrogen, high ductility
• Widely used in automotive repair

Flux-Cored Welding Wire

High-efficiency wire for semi-automatic and automatic welding. Suitable for gas-shielded and self-shielded applications.

• E71T-1, E71T-GS models
• Diameter: 1.2mm – 2.0mm
• Spools: 15kg, 20kg

Stainless Steel Welding Wire

ER308L, ER309L, ER316L grades for MIG/TIG welding. Smooth feeding, consistent arc, and excellent corrosion resistance.

• Low carbon, high purity
• Diameter: 0.8mm – 1.6mm
• Reel options: 5kg, 15kg

Aluminum Alloy Welding Wire

ER4043 and ER5356 grades for welding aluminum structures. Excellent fluidity and crack resistance.

• Ideal for transportation & aerospace
• Diameter: 1.2mm – 1.6mm
• Anti-oxidation packaging

Welding Flux

Granular flux for submerged arc welding (SAW). Forms protective slag and gas shield for high-quality welds.

• F7A2-EM12K, F7A4-EM12K
• Compatible with H08A, H10Mn2 wires
• 25kg bags, moisture-resistant

Why Choose Chenggong?

Reliability, quality, and global trust built over 15 years of innovation.

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Global Reach

Products exported to over 40 countries including USA, UK, Brazil, Russia, and South Africa.

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Certified Quality

ISO 9001, CE, CCS, ABS, AWS, and DB certified. Full compliance with international standards.

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Advanced Production

State-of-the-art equipment ensures consistent quality and high production capacity.

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R&D Driven

Dedicated research team continuously improves formulations and performance.

Frequently Asked Questions

What certifications do your products have?

Our products are certified under ISO 9001, CE, CCS, ABS, AWS, and Deutsche Bahn (DB), ensuring compliance with international quality and safety standards.

Can you provide custom packaging?

Yes, we offer OEM packaging and private labeling based on customer requirements, including custom box designs and branding.

What is your minimum order quantity (MOQ)?

Our standard MOQ is 1 ton per product type, but we can accommodate smaller trial orders for new customers.

How do you ensure product quality?

We conduct 100% inspection during production and final testing. Raw materials are sourced from trusted suppliers and tested before use.

What are your delivery times?

Typical production time is 15–20 days after order confirmation. Shipping time depends on destination and method (sea/air).

Get in Touch

Reach out to us for product inquiries, quotations, or technical support. We respond within 24 hours.

Phone

+86-532-80788185

+86-150-6688-8752

Email

[email protected]

Location

Shandong Road, Shibei District
Qingdao, Shandong 266021
China

Visit Official Website

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