Client Inspection Passed: Honed Alloy Steel Tubes with Mirror-Finish ID Ready to Ship
304L Stainless Steel Pipe — Φ219 × 4mm, All Specs Verified
An overseas client visited our warehouse and signed off the lot on first inspection.
This week an overseas client visited our warehouse to inspect an outbound order of ASTM A312 304L stainless steel pipes — Φ219 × 4mm large-diameter, sanitary-grade — bound for an overseas food-grade pipeline project.
Inspection was carried out jointly by our QC team and the client, covering wall thickness, OD, surface finish, and material certificate. Everything passed on the first round.
Inspection Results
| Test Item | Result | Required Spec |
|---|---|---|
| Wall Thickness | 3.86 mm | ≥ 3.80 mm |
| Outer Diameter | Φ219 mm | within tolerance |
| Surface Finish | Defect-free | Pickled & passivated per ASTM A312 |
| Material (MTC) | C ≤ 0.03%, Cr 18–20%, Ni 8–12% | EN 10204 3.1 |
Why 304L?
Low-carbon 304L (C ≤ 0.03%) resists intergranular corrosion after welding — that’s why it’s the default choice for:
- Food & beverage / dairy pipelines
- Pharma & pure water systems
- Chemical & petrochemical process piping
- Marine, desalination & offshore
Service life: 30+ years under normal operating conditions.
Why BaowuSteels?
- 15+ years in stainless steel export
- Mill-direct supply + full in-house processing (cutting, beveling, grooving)
- Delivered to 60+ countries — EU, US, MENA, SEA, Africa, LATAM
- 24-hour quotation, 48-hour PI, OEM/ODM welcome
- ISO 9001, CE, third-party inspection (SGS / BV / TUV) open and free
Need 304L or 316L stainless pipe?
Send your spec, grade, and quantity — competitive FOB/CIF quote back within 24 hours.
👉 Get a Quote📍 Factory visits welcome any weekday — email us 3 days ahead to arrange pickup & host.