PROGRESSO
Product Overview
Stainless steel seamless tube 304 is one of the most widely used austenitic stainless steel grades, combining excellent corrosion resistance, good formability and outstanding weldability. Our 304 stainless steel tubes are manufactured from hot-rolled or cold-drawn billets with strict process control and are supplied in both seamless and welded construction to meet the requirements of pressure piping, structural frames, fluid conveyance and sanitary applications. Every tube is fully annealed, pickled or bright-annealed, and hydro-tested before delivery.
Specifications
| Item | Specification |
|---|---|
| Materiale | Acciaio inossidabile 304 (UNS S30400) |
| Standard | ASTM A312 / A213 / A269, IN 10216-5, GB/T 14976, JIS G3459 |
| Tipo | Seamless (SMLS) / Welded |
| Outer Diameter | 6 mm – 630 mm (1/8″-24″) |
| Spessore del muro | 0.5 mm – 40 mm |
| Lunghezza | 3 m – 12 m, random or fixed |
| Finitura superficiale | Annealed & Pickled, Bright Annealed, Polished 180-600 grit, Mirror |
| Tolerance | DI +/- 0.1 mm (cold drawn), Wall +/- 10% |
| Temperare | Annealed, Half Hard, Full Hard |
| End Protection | Plastic caps on both ends |
Composizione chimica
| Elemento | Contenuto (%) |
|---|---|
| C | <= 0.08 |
| E | <= 1.00 |
| Mn | <= 2.00 |
| P | <= 0.045 |
| S | <= 0.030 |
| In | 8.00 – 11.00 |
| Cr | 18.00 – 20.00 |
Caratteristiche principali
- Excellent corrosion resistance in atmospheric, industrial and mild chemical environments
- High tensile strength (>= 515 MPa) with good ductility (elongation >= 40%)
- Superior weldability for TIG and MIG processes without pre-heating
- Excellent low temperature toughness, suitable for cryogenic applications
- Clean and smooth surfaces available from 2B, BA to mirror polished finish
- 100% hydrostatic or eddy current tested with traceable heat number per lot
Applicazioni
- Chemical and petrochemical pipelines and heat exchangers
- Food and beverage processing equipment
- Pharmaceutical and sanitary tubing
- HVAC, boiler and pressure piping systems
- Architectural handrails, structural frames and marine fittings
- Automotive exhaust systems and mechanical parts
Quality Control
Each heat of material is supplied with a mill test certificate (IN 10204 3.1). Dimensional inspection is performed on every tube, and mechanical testing, flattening test and hydrostatic test are carried out according to the applicable standard. Third-party inspection by SGS, BV or TUV is available upon request.
Confezione & Spedizione
| Item | Detail |
|---|---|
| Confezione | Plastic caps, hexagonal bundle, steel frame or wooden case |
| Shipping Marks | Nome del prodotto, standard, size, heat no., net weight, destination port |
| Loading Port | Tianjin / Qingdao / Shanghai, Cina |
| Payment Terms | T/T 30% deposit + 70% prima della spedizione, L/C at sight, D/P |
| Delivery Time | 15-30 days after deposit |
| MOQ | 1 ton per size |
| Trade Terms | FOB, CIF, CFR, EXW, DDP |
Perché scegliere noi
With more than 15 years of experience in metal product export, our factory supplies a full range of stainless steel tubes with stable quality, competitive price and reliable delivery. A professional QC team and complete testing facilities ensure every order is inspected before shipment.
