VertexFlow Tubes engineers precision welded stainless steel tubing in Foshan, China. Choose your entry point below — browse by end-use industry when you know the application, or by dimensional standard when your drawing already specifies a profile.
Standard 304 tea-stains within months in chloride-rich air. Our 316L tube carries 2–3% molybdenum and is pickled and passivated after welding, clearing 500+ hours of neutral salt spray for coastal showers, marinas and poolside hardware.
Electroplating only looks as good as the substrate beneath it. We hold Ra ≤ 0.4 µm with no weld-bead witness line, so chrome, brushed nickel and gunmetal PVD layers adhere evenly on shower arms, faucet bodies and towel bars.
A cleaner alternative to plastic-coated lean pipe. Coating delamination traps bacteria and sheds particles; solid stainless does not. Ideal for cleanroom trolleys, ESD-sensitive benches and food-processing flow racks that get washed down daily.
Roller shells built from our tube run quieter and truer because we control total indicator runout and straightness to 1 mm/m. Food, pharma and parcel-sorting OEMs use 304/316L shells to remove the rust and repaint cycle entirely.
Consistency is the real specification. Every coil is slit in-house and welded with plasma under inner nitrogen shielding, so batch-to-batch colour and gloss match across repeat railing, display and frame orders.
Glass-railing and machine-frame fabricators need tight corner radii and true 90° faces for clean mitre welds. We control squareness to ±0.5° and offer sharp-corner tooling so gasket channels seat without shimming.
Designers love curves; most mills charge for them. Our library of 500+ roll-forming moulds covers flat oval radiator tube, D-shape ergonomic handles and slotted channel — standard profiles ship with zero tooling cost.
Rose gold, champagne, black titanium and brushed brass applied by physical vapour deposition — a 0.3–0.5 µm ceramic layer that outlasts painted or anodised finishes in abrasion and UV testing for handles, hinges and trim.
VertexFlow Tubes Co., Ltd. is the export arm of the Xiyouwo stainless steel group. Since 2014 we have run our own slitting, plasma welding, annealing and polishing lines under one 12,000 m² roof in Shishan Town, Nanhai District, Foshan — the densest stainless cluster in China.
That vertical control is why we can answer a metallurgical question in an hour rather than forwarding it to a mill. Our team has resolved weld-seam cracking on CNC bends, chloride pitting on spa hardware and plating adhesion failures for buyers in 40+ countries, and every solution feeds back into our process cards.
201, 304, 304L, 316 and 316L tube in round, square, rectangular, oval and custom profiles, with satin, No.4, 600# mirror and PVD finishes.
Prime strip from TISCO, POSCO and Baosteel only. Flattening, flaring and eddy-current checks plus stable tolerances that protect your bending yield.
Send a drawing or a failed sample — we reply with grade, wall and radius recommendations, plus a mould check against our 500-profile library.
Third-party inspection is welcome at any stage. Below are the figures we publish and stand behind — the same ones printed on our CE and FDA documentation packs.
Year established — 12 consecutive years of welded tube production in Foshan.
Single-site plant footprint covering slitting, welding, polishing and packing.
Staff including 9 QC inspectors and a dedicated export documentation team.
Tube mills running in parallel, giving roughly 900 tonnes monthly output.
Follow a coil from the slitting line through plasma welding, nitrogen-shielded cooling, four-pass polishing and final 100% inspection.
Click a hotspot on the main image to read the specification that matters most for that application. These three families account for the majority of our repeat export tonnage.
From grade selection and wall-thickness advice to mould checks, packing method and certification, our engineers work with your production team before the first coil is slit. Technical replies within one working day, Foshan time (GMT+8).
Move through the timeline to see where each defect is caught. Most tube complaints — pinholes, oxidation, out-of-round, uneven gloss — originate in one of these ten stages, so each has its own inspection gate and record.
Written by our QC and export engineering team from real customer files — not generic industry copy.
Process notes, troubleshooting write-ups and company updates published by the VertexFlow team.
A defect-by-defect walkthrough of CNC bending failures: how material ductility, weld-seam orientation and wall-thickness control interact, and the radius rules we give furniture producers to cut scrap rates before tooling is committed.
Read the full analysisWhy the habit that spots litter on a pavement is the same habit that spots a 0.05 mm dimensional drift on a tube mill.
Our Reform & Innovation Committee goes live, and the first shop-floor improvement proposal is rewarded.
What 500 hours of neutral salt spray does and does not prove, and how to specify passivation in your purchase order.
Gloss retention, fingerprint visibility and abrasion behaviour compared across our four most requested finishes.
