Nous fabriquons et exportons des tubes carrés sans soudure en acier inoxydable et en alliages. Découpés avec précision, résistants à la corrosion et personnalisables, ils sont idéaux pour les applications structurelles, architecturales et industrielles.
As a trusted manufacturer of square seamless tubes in China, we specialize in producing high-strength, corrosion-resistant square tubing for applications across architecture, construction, machinery frames, and structural supports. Our square seamless tubes are crafted from premium stainless steel and alloy materials using cold-drawn or hot-rolled processing to ensure dimensional accuracy and exceptional durability.
We support full customization for size, wall thickness, and surface finish to meet your engineering or design needs. With an experienced technical team and strict quality control, we deliver consistent product quality backed by international standards like ASTM, EN, and ISO certifications.
| Objet | Détails |
| Nom du produit | Tube en acier inoxydable, tube en acier inoxydable, tube en acier inoxydable |
| Standard | GB, AISI, ASTM, ASME, DIN, EN, JIS |
| Niveaux disponibles | Série 200 : 201, 202300 Série : TP304, 304L, 304H, 316, 316L, 316H, 316Ti, 317, 317L, 310S, 310H, 321, 321H, 347, 347HS Alliages spéciaux : 904L, S31254 (254SMO)Série 400 : 409, 410S, 416, 420, 430, 439, 440, 444, 446Duplex et autres : 2205, 2507, S31803, S32205, S32750, S32760, 253MA |
| Processus | Laminés à chaud, laminés à froid |
| Tailles | Épaisseur : 0,24-3mm, Diamètre extérieur : 8-219mm, Longueur : 1-6m (selon la demande du client) |
| Traitement de surface | NO.1, 2B, NO.4, BA, HL, Miroir |
| L'inspection | SGS, TUV, BV, ABS, LR, etc. |
| Application | Pétrole et gaz, pétrole, navires, construction navale, traitement de l'eau et protection de l'environnement, etc. |
| Finition | Description | Épaisseur typique (mm) | Largeurs disponibles (mm) |
| 2B | Lisse, reflet gris. Les plus utilisés. | 0.55 | 914, 1219 |
| BA | Finition miroir recuit brillant. | 0.70 | 914, 1219 |
| DP | Brossé, non réfléchissant, facile à nettoyer. | 0.90 | 750, 914, 1219 |
| RH | Finition écaillée, laminée à chaud. | 1.20 | 750-1500 |
| N°1 | Surface décapée et blanche après le laminage à chaud. | 1.50 | 914, 1219, 1500 |
| HL | Finition polie linéaire continue. | 1.60 | 914, 1219, 1500 |
| N° 4 | Polissage avec un grain de 150-180. | 2.00 | 914, 1219, 1500 |
| No.8 | Finition miroir, très réfléchissante. | 2.50 | 914, 1219, 1500 |
Our square seamless tubes are primarily provided in hollow square form, with precise outer dimensions and clean internal surfaces. We offer customized tube sizes ranging from small-section square pipes for mechanical parts to large square tubing for load-bearing structures. Surface options include polished, pickled, satin-brushed, and mill finishes. Ends can be plain, beveled, or machined upon request.
Nous sommes un fabricant et fournisseur de confiance de tubes en acier inoxydable 202, offrant des tailles personnalisées, des finitions durables et une excellente résistance aux températures élevées. Idéal pour les mains courantes, les structures décoratives et les utilisations industrielles.
High-performance 2507 super duplex stainless steel tube with excellent corrosion resistance, high strength, and low thermal expansion. Ideal for seawater and chemical processing. OEM customization available from certified Chinese factory.
Tubes en acier inoxydable 321 de haute performance fabriqués en Chine. Alliage stabilisé au titane, idéal pour les applications à haute température et résistantes à la corrosion. Disponible dans différentes formes et spécifications personnalisées.
Popular materials include stainless steel grades like 304, 316, 321, and duplex options like 2205. We also offer 904L and high-strength alloys upon request.
Seamless tubes have no welded seam, providing better uniformity, higher strength, and improved corrosion resistance, especially in high-pressure or critical applications.
Yes. We offer made-to-order sizing and surface finishes, including mirror polish, pickled, or sandblasted, depending on your end use.
These tubes are commonly used in construction, transportation, marine, petrochemical, and decorative structures, where both appearance and strength are important.
Lead time depends on the order size and customization. For standard sizes, delivery can be made within 7–15 days. We offer flexible MOQ for stocked items.
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