Quality Galvanized Steel Welded Tube Supplier | Full Range of Sizes | Cost-Effective Anti-Corrosion Solution
Length 6000-25000mm,
Diameter: 3mm–1000mm
Thickness: 0.5-40mm
Surface：2B, 2D, No. 1, No. 4, BA, HL, 6K, 8K, polishing, annealing, pickling, bright, etc
Standard：ASTM，AISI，JIS,GB， DIN,EN
Products can be customized
Email: [email protected]
WhatsApp/WeChat/Mobile：+86-18753135285
Galvanized Steel Welded Tube performance parameters
| Product Name | Stainless Steel Seamless Tube | |
|---|---|---|
| Material | 201(1Cr17Mn6Ni5N), 202(1Cr18Mn8Ni5N), 301(1Cr17Ni7), 302(1Cr18Ni), 304(0Cr18Ni9) SS304, TP304 | |
| 304L(00Cr19Ni10) SS304L, TP304L, 321(1Cr18Ni9Ti) SS321TP321, 316(0Cr17Ni12H2O2) SS316TP316, 316L(0Cr17Ni14Mo2), SS316LTP316L, 310S(0Cr25N20), SS310S, TP310S | ||
| Model | length 6000-25000mm, diameter: 3mm--1000mm thickness: 0.5-40mm | |
| Standard | GB2270-80, JIS, ASTM, DIN, EN, AISI | |
| Place of Origin | Shandong, China | |
| Delivery time | 7-15 days | |
| Surface finishing | 2B, 2D, No. 1, No. 4, BA, HL, 6K, 8K, polishing, annealing, pickling, bright, etc. | |
| Certificate | API5L, ISO 9001:2008, SGS, BV, CCIC,CE | |
| Supply capacity | 20,000 tons/year | |
| MOQ | 1 ton | |
| Trade Terms | FOB, CIF, CFR, EXW, FCA, FAS, etc. | |
| Payment | TT, LC, We can negotiate | |
| Tests | squash test, extension test, hydrostatic test, crystal decay test, heat resistance | |
| Application | Widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames and steel scaffolding used in construction. Using steel pipe to make ring parts can improve the utilization rate of materials, simplify the manufacturing process, save materials and processing time, such as rolling bearing rings, jack sleeves, etc. | |
Advantages of Our Galvanized Steel Welded Tube
Outstanding Cost-Effectiveness and Large-Scale Supply Capacity
Thanks to mature high-frequency welding processes, our galvanized welded tubes maintain excellent physical properties while achieving high production efficiency and significant price advantages. Compared to seamless pipes, they are the most cost-effective choice for construction supports, temporary scaffolding, and large-scale fencing projects, effectively reducing overall procurement costs.
Precise Dimensional Accuracy and Wall Thickness Uniformity
Using high-quality cold-rolled or hot-rolled steel strips as raw material, our welded tubes offer more precise wall thickness uniformity and outer diameter tolerances than seamless pipes. This high dimensional consistency ensures smoother automated cutting, bending, and welding assembly, guaranteeing the precise fit and aesthetic appeal of the final structural components.
All-Around Anti-Corrosion Coating and Excellent Welding Compatibility
Through rigorous hot-dip galvanizing, both the internal and external walls, including the weld seam area, receive perfect zinc layer protection. Our tubes feature excellent welding compatibility and strong zinc adhesion. They perform stably during secondary connection or welding on-site, making them an ideal durable material for agricultural greenhouses, municipal piping systems, and low-pressure fluid transport.
Packaging style of Galvanized Steel Welded Tube
FAQs
Is the weld seam more prone to rust than other parts? How do you handle its corrosion protection?
For hot-dipped galvanized welded tubes, the pipe is submerged in a zinc bath after welding, so the weld seam has the same zinc thickness as the base metal. For pre-galvanized tubes, we apply a zinc-spraying repair on the welding line to ensure the weld area also possesses excellent antioxidant capacity.
Should I choose pre-galvanized or hot-dipped galvanized tubes? Which one is more cost-effective?
It depends on your budget and environment. Pre-galvanized tubes offer a smoother surface, more precise dimensions, and a lower price, ideal for indoor decoration or structural supports in dry conditions. Hot-dipped tubes have a thicker zinc layer (usually >40-60μm) and longer lifespan, making them the best choice for outdoor, underground, or humid projects.
Will the internal weld bead affect fluid flow or subsequent inserting of parts?
For fluid transport or precision structural needs, we offer internal weld bead removal. The processed inner wall features high flatness, which not only reduces fluid resistance but also prevents scratching or obstruction when inserting cables or precision shafts.
Can welded tubes be used for fire sprinklers or pressure fluid transport? How do you ensure no leakage?
Yes. Our fluid-grade welded tubes undergo rigorous online eddy current testing (ET) and hydrostatic testing before leaving the factory. The weld strength passes physical tensile tests, fully meeting safety standards for low-to-medium pressure fire systems and water supply engineering.
Will the weld seam crack or the zinc coating flake off during swaging, flaring, or bending?
No. We use high-frequency induction welding, ensuring the weld seam and base metal are fused as one, and the galvanizing process ensures a metallurgical bond between the zinc and steel. Within the material’s allowable deformation range, the weld will not crack, and the zinc layer will not flake off.
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