Phone / WhatsApp:
+86-13288385958
E-mail: sale20@shunbeifactory.com
E-mail: sale20@shunbeifactory.com
Xingye 9th Road, Guanglong Industrial Zone, Yongxing village, Chencun Town, Shunde District, Foshan City, Guangdong, China
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3M~18M &Customized
10MM~1800MM
ASTM ASME SUS JIS DIN
1/8"--20" (6mm-530mm)
Round/Square/Rectangular/Hexagonal
FOB, EXW, CIF, CFR
stainless steel
No.1/2B/BA/NO.4/6K/8K/HL(Hairline)/Matting
10 TON
Bending, Welding, Decoiling, Punching, Cutting.
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Product Description
SUS 403 Seamless Stainless Steel Tube (UNS S40300 / 12Cr12) is a martensitic stainless steel tube containing 12% chromium as its main alloying element. With proper heat treatment, it delivers excellent mechanical strength, fatigue resistance, and oxidation resistance under high-temperature and high-pressure conditions.
The material maintains stability in continuous high-temperature environments and offers moderate corrosion resistance through a chromium passivation film. This makes it a preferred choice for turbine blades, rotors, high-temperature fasteners, boilers, and energy equipment components where durability and reliability are critical.
| Name | SUS 403 Stainless Steel Seamless Tube |
| Grade | 12Cr12, SUS403, STS 403, ASTM 403, UNS S40300, 2301, 403S17 |
| Type | Seamless Tube |
| Shape | Round / Square / Rectangular / Hexagonal |
| Technique | Hot Rolled / Cold Rolled / Extruded / Cold Drawn |
| Thickness | 0.5 mm – 30 mm |
| Diameter | 3 mm – 114 mm |
| Length | 1 m – 18 m (customizable) |
| MOQ | 5 Tons |
| Origin | Foshan, China |
| Production Capacity | 100,000 tons / month |
| Sample | Available |
| Processing Services | Cutting, Bending, Welding, Punching, Decoiling |
| Payment Terms | T/T, L/C, Western Union, PayPal |
High-Temperature Resistance: Maintains strength and oxidation resistance in continuous high-heat environments.
Mechanical Performance: High fatigue strength, hardness, and toughness after heat treatment.
Moderate Corrosion Resistance: Chromium-based passivation film protects against atmospheric and water vapor corrosion.
Excellent Machinability: Supports forging, cutting, and multiple processing methods.
International Standards: Complies with ASTM A213/A269 (seamless pipe) and ASTM A249 (welded pipe).
Turbine blades and rotors
High-temperature fasteners in energy equipment
Boilers and pressure vessels
Petrochemical and chemical industry pipelines
Aviation and aerospace structural components
Power plant high-load parts
One of the largest stainless steel seamless pipe exporters in China
Competitive factory-direct prices
Professional after-sales support
Fast and reliable global delivery
Flexible payment terms: T/T, L/C, Western Union, MoneyGram, buyers’ credit terms