| Name | Stainless steel sanitary pipe |
| Items | Square welded pipes, round welded pipes, oval welded pipes, special shaped welded pipes empaistic welded pipes, fittings |
| Standard | ASTM A554, A249, A269 and A270 |
| Material Grade | 201: Ni 0.8%~1% |
| 304: Ni 8%, Cr 18% |
| 316L: Ni10%~16% |
| Outer Diameter | 6mm--159mm |
| Thickness | 1.0mm - 4.0mm |
| Length | 6m or as customers' request |
| Tolerance | a) Outer Diameter: +/- 0.2mm |
| b) Thickness: +/- 0.02mm |
| c) Length: +/- 5mm |
| Surface | 180G, 320G, 400G Satin / Hairline 400G, 500G, 600G or 800G Mirror finish |
| Application | handrail,railing, weldmesh screen, staircase, door,window, balcony,fence,bench,furniture,etc |
| Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT |
| Chemical Composition of Material | Material Composition | 201 | 202 | 304 | 316L | 430 |
| C | ≤0.15 | ≤0.15 | ≤0.08 | ≤0.035 | ≤0.12 |
| Si | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 |
| Mn | 5.5-7.5 | 7.5-10 | ≤2.00 | ≤2.00 | ≤1.00 |
| P | ≤0.06 | ≤0.06 | ≤0.045 | ≤0.045 | ≤0.040 |
| S | ≤0.03 | ≤0.03 | ≤0.030 | ≤0.030 | ≤0.030 |
| Cr | 13-15 | 14-17 | 18-20 | 16-18 | 16-18 |
| Ni | 0.7-1.1 | 3.5-4.5 | 8-10.5 | 10-14 | |
| Mo | | | | 2.0-3.0 | |
| Mechanical Property | Material Item | 201 | 202 | 304 | 316 |
| Tensile Strength | ≥535 | ≥520 | ≥520 | ≥520 |
| Yield Strength | ≥245 | ≥205 | ≥205 | ≥205 |
| Extension | ≥30% | ≥30% | ≥35% | ≥35% |
| Hardness (HV) | <105 | <100 | <90 | <90 |
Usage: Milk and food industry, pharmaceutical industry, special inner surface requirements of the industry.
Process characteristics: inner bead leveling treatment, solution treatment, inner surface electropolishing
Performance characteristics: the internal surface roughness Ra is more than 0.2, the wall hanging residue is small, easy to clean, prevent bacterial growth, electrolytic polishing has a passivation effect, and the inner wall has good defense performance.
Testing methods: lateral, longitudinal flattening, reverse flattening, hydrostatic testing or eddy current testing, mechanical properties testing, internal surface roughness testing.
