Our stainless steel sanitary tube complies with ASTM A270 standards. Crafted from cold-rolled stainless steel strip, its chemical composition is meticulously controlled to improve weldability. The resulting weld bead undergoes cold-working to achieve a perfect finish, rendering the longitudinal weld nearly imperceptible. Subsequent bright annealing in a carefully controlled environment preserves the tubing's structural integrity at its maximum
| Material | 304 /304L/316L | |||
| Certificate | PED/ISO/MTC, AEO | |||
| Surface | Outside Polishing:MF , 180Grit, 320Grit, 400Grit,600Grit Inside Polishing : 180 Grit, 320Grit,400 Grit (Rounghness:0.4-0.8 Ra) | |||
| Diameter | 24mm-159mm | |||
| Thickness | 0.6mm-5.0mm | |||
| Length | 5.8 M ,6M ,20 Feet or Customized | |||
| Processing | Welding, bright annealing, inside bead removing,polishing(inside and outside) | |||
| Delivery Time | 30 days for a container quantity | |||
| Payment Terms | T/T, LC, Cash, etc. Normally 30% by T/T in advance, balance to be paid before shipment. | |||
| Packing | Each tube will be packed in plastic bag, then several tubes will be packed by hollow plate. | |||
| Application | Food industry, biological engineering industry, pharmaceutical industry, purified water industry, electronic enginneering industry,chemical fiber industry, beer industry etc. | |||
The Bright Annealing process in Vinmay is performed in a controlled atmosphere containing inert hydrogen gas at 1040℃. Annealing is a typically used to reduce hardness , increase ductility and eliminate internal stresses.While the controlled atmosphere reduces the surface oxidation to a minimum which results in a brighter surface and a much thinner oxide layer. Picking is not needed after bright annealing since the oxidation is minimal. Since there is no pickling , the surface of stainless steel sanitary tube is much smoother which results in better resistance to pitting corrosion.
After the process, bright annealed finish has a bright, reflective appearance, but may have some cloudiness slightly different from MF (Mill Finish)
Vinmay has full set of online inside bead removing equipment，bringing smooth surface for inner weld seam to meet clean purpose, and controlling the height of weld seam for precision request. It's an important process for pipes of fluid field or food industry.
In order to produce stainless steel sanitary tubes, we have introduced a semi-automatic internal wheel polishing line. The flexible polishing wheel and fine abrasive on the surface of the stainless steel tube and micro-cutting are used to achieve the polishing process.
The roughness is an important parameter for measuring the quality of internal polishing, while our capacity is 0.2-0.7 Ra
Foshan Vinmay Stainless Steel Co., Ltd. is a large-scale international enterprisewhich concentrates on producting stainless steel welded tubes and the related fittings. As a key partner for global stainless steel welded tube distributors, Vinmay serves the top importer of ss welded tube all over the world. We are committed to assisting our customers in becoming the top distributor in their country or worldwide.
