TP409 exhaust pipes are made of ferritic steel, which is low in cost (60%+ lower than 304), resistant to exhaust oxidation below 650℃, and suitable for ordinary automobile exhaust systems; TP304 stainless steel pipes are austenitic steel, resistant to strong corrosion (Cl⁻≤20,000 ppm) and high temperature (870℃), but are expensive and are mostly used in high-end or harsh environments (such as coastal and chemical exhaust).
| Item | Specification |
|---|---|
| Outer Diameter (OD) | 89 mm–610 mm (3.5"–24") |
| Wall Thickness (WT) | 6 mm–30 mm (Sch40–Sch160) |
| Length | Standard: 6 m–12 m Custom: Cut to order (Minimum 2 m) |
| Surface Finish | Hot-rolled Pickled (Standard); Aluminum-Silicon/Epoxy Coated (Optional) |
| Material Grade | TP409 (UNS S40900, JIS SUS409L) |
| Standards Compliance | ASTM A268, ASME SA268, JIS G4305 |
| Temperature Resistance | -20℃ to 650℃ (Long-term service); Short-term peak up to 700℃ |
| Corrosion Resistance | Resistant to automotive exhaust gases (CO/NOx/SO₂) and moderate-temperature oxidation |
GNEE products have been exported to 60 countries including India, Thailand, Iran, Brazil, Egypt, etc. GNEE has passed ISO9001 quality management system certification, American Petroleum Institute API-5CT, API-5L certification, special equipment production license, BV certification and other third-party certifications.
GNEE provides additional services such as machining, bending, painting, heat treatment, cutting, drilling, beveling, tempering, surface treatment, etc.
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Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What ports of shipment are there?
A:Under normal circumstances, we ship from Tianjin, Qingdao ports, you can specify other ports according to your
needs.
Q3:What is your terms of payment ?
A:30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
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