JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
WUXI DETA METAL PRODUCTS CO.,LTD
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Hot Rolled Pickled Finishing SS Pipe ASTM A312 A213 TP316L Stainless Steel Pipe Tube
| Product Name | Stainless Steel Pipe Ss Pipe |
| Fabrication Standard | ASTM A213/269/312/789 |
| Material Grade | TP304 TP316 TP310S SS32750 TP321 TP347L 2507 S32205 254SMo 904L.etc |
| Out Diameter | 1/8" - 24" |
| Wall Thickness | 1.25mm - 80mm |
| Length | <= 18 Mtr |
| Surface | anealling and pickles surface, polishing |
| Package | by piece, in bundles, with external pvc wrapped, wood crated |
| Minimum Order Quantiy | 1 Metric Tons |
| Our Advantage | 1.regular sizes in stock over 2000 tons for immediate delivery |
| 2.small quantity with factory rate | |
| 3.quality certificate as per EN10204 3.1b issued by manufacturer | |
| 4.expert technical and export/import document consultant and support | |
| 5.on-time response by email, skype, website and online messages |
ASTM A312 Grade TP316 and TP316L refer to the stainless steel 316 and 316L respectively. The prefix “TP” denotes “type” of the stainless steel. TP316 or TP316L pipes may be furnished in seamless or longitudinally welded types with butt welding ends or threaded ends. TP316 is derived from the classic “18-8” (TP304) stainless steel by adding molybdenum for enhanced pitting resistance in chloride environments. TP316L is the low carbon version of TP316, in which low carbon content improves sensitization for better welded corrosion resistance.
ASTM A312 TP316 and TP316L are designated with UNS S31600 and UNS S31603, respectively. Although more expensive, pipes made of TP316/ TP316L have higher level corrosion resistance than that of TP304/ TP304L. They can be used for a diversified range of corrosive chemical process piping which involves inks, rayon, photographic chemicals, paper, textiles, bleaches, and rubber.
Seamless pipes made of ASTM A312 TP316/ TP316L shall be made by a process that does not involve welding at any stage of production; welded pipes shall be manufactured using an automatic welding process with no addition of filler metal during the welding process. The TP316/ TP316L pipe shall be heat treated by solution treatment, in which the pipe shall be heated and held for long enough period at a temperature no less than 1900°F [1040°C] so that all chromium carbides can be fully austenitized/ dissolved. Subsequent water cooling or rapid cooling by other means shall be conducted to ensure no precipitation of carbides at grain boundaries. Moreover, TP316L is less likely to precipitate chromium carbides compared to TP316 since their carbon content is low enough to reduce precipitation of intergranular carbides. This may result in limited sensitization hence benefit welding, flame cutting, and other hot-working operations.
| Element | Composition, % TP316 | Composition, % TP316L |
|---|---|---|
| C | ≤0.08 | ≤0.035 |
| Mn | ≤2.00 | ≤2.00 |
| P | ≤0.045 | ≤0.045 |
| S | ≤0.030 | ≤0.030 |
| Si | ≤1.00 | ≤1.00 |
| Cr | 16.0-18.0 | 16.0-18.0 |
| Ni | 10.0-14.0 | 10.0-14.0 |
| Mo | 2.00-3.00 | 2.00-3.00 |
| Tensile Requirements | TP316 | TP316L |
|---|---|---|
| Tensile Strength min. MPa [ksi] | 515 [75] | 485 [70] |
| Yield Strength min. MPa [ksi] | 205 [30] | 170 [25] |
| Elongation in 2", min, % (*L) | 35 | 35 |
| Elongation in 2", min, %(*T) | 25 | 25 |
| NPS | *t/D | Tolerance, % from Nominal | |
|---|---|---|---|
| 1/8"~2.5" | All | +20.0 | -12.5 |
| 3"~18" | ≤5% | +22.5 | -12.5 |
| 3"~18" | >5% | +15.0 | -12.5 |
| ≥20“ Wld. | All | +17.5 | -12.5 |
| ≥20“ smls | ≤5% | +22.5 | -12.5 |
| ≥20“ smls | >5% | +15.0 | -12.5 |
ASTM A312 TP316/ TP316L seamless pipes are generally furnished in sizes 1/2″ through 24″, while ASTM A312 TP316/ TP316L welded pipes are available from 1-1/2″ through 48″. The wall thicknesses shall be furnished in accordance with ASME B36.10M or ASME B36.19M. The pipes are usually supplied in lengths of 6.096 m (20′), 12.19 m (40′), 6 m, and 12 m, etc. No pipe shall be under the specified length and no pipe shall be more than 0.25″ [6 mm] over the specified length.
Visual examination, dimensional inspection, PMI chemical analysis, tensile test, flattening test, bend test, eddy-current test, etching test, radiographic examination (for welded pipes), intergranular corrosion test (upon request).
