ASTM A213 TP316L Seamless Pickled Boiler Tube
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ASTM A213 TP316L Seamless Pickled Boiler Tube is a type of seamless stainless steel tube conforming to the ASTM A213 standard, made from the 316L grade alloy and provided in a "pickled" condition. The TP316L grade offers excellent corrosion resistance, particularly in chloride environments. "Seamless" means it's made without welding, and "pickled" indicates it has undergone an acid treatment to remove surface scale, leaving it clean.
ASTM A213 Gr. TP316L seamless tubes can be further classified as TP316L boiler tubes, TP316L superheater tubes, and TP316L heat exchanger tubes, according to the service it is used for. The tubing is usually specified by outside diameter and minimum wall thickness, or average wall thickness.
A213 TP316L Stainless Steel Round Boiler Tube specification
| Outside Diameter | 12.7mm ~ 127mm |
| Wall Thickness | 0.5mm ~ 12.7mm |
| Length | Up to 25m |
| Grade | TP304,TP304L,TP316, TP316L,T5, T9, T11, T22, etc. |
| Delivery Condition | Pickled, Polished, Bright Annealed |
| Technique | Seamless/Welded |
| Application | Heat-exchanger, Heater, Boiler, Condenser Equipment |
| Marking | LOGO, Standard, Grade, Size, Heat Number. |
| Package | Woven bag, wooden case or as per customer's requirement. |
| Quality Requirement | Mill Test Certificate (EN 10204/3.1); Third Part Inspection is acceptable. |
What is the wall thickness tolerance for ASTM A213 stainless steel pipe?
ASTM A213 stainless steel tubing wall thickness tolerance is specified by the standard and depends on the tube's size and whether minimum or average wall thickness is ordered. For a minimum wall thickness order, the tolerance is typically no less than 12.5% below the nominal wall thickness, while for an average wall thickness order, the tolerance is usually 15% or more above the specified average.
Chemical Composition Requirements
| Element | TP316, % | 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 |
*The nominal composition of ASTM A213 Gr. TP316 and TP316L is 16Cr-12Ni-2Mo.
Tensile & Hardness Requirements
| Mechanical 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. % |
35 | 35 |
| Brinell Hardness max. HBW |
192 | 192 |
| Vickers Hardness max. HV |
200 | 200 |
| Rockwell Hardness max. HRB |
90 | 90 |
Tests
Flattening Test
One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.
Flaring Test
Flaring Test-One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.
Hydrostatic or Nondestructive Electric Test
Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer unless otherwise specified in the purchase order.
GNEE Stainless produces A213 TP316L seamless stainless steel tube for heat exchanger, boiler, super heater equipment, heat treatment and pickling finishing, tube furnished to ASTM A213 shall conform to the requirements of Specification A1016 / A1016M, grades cover Ferritic and Austenitic stainless steels.
We have capacities to offer MW and AW wall thickness seamless tubes to meet specific applications, bright annealed and annealing pickling finishes are available, and we also offer U bend tubes and coiled tubes for heat exchanger systems.
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