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ASTM A270 / ASME SA270 TP316LSanitary Stainless Steel Welded Pipe
ASTM A270 sanitary pipe is specifically designed for use in the food, dairy, beverage, and pharmaceutical industries where cleanliness and sanitation are of utmost importance. The pipe is also subjected to various tests such as hydrostatic testing, eddy current testing, and pneumatic testing to ensure that it meets the required standards. Additionally, the pipe is polished to a specified finish to eliminate any surface imperfections that could harbor bacteria or other contaminants.
ASTM A270 Sanitary Stainless Steel Pipe Specification
ASTM A270 sanitary stainless pipe usually refers to the small pipe diameters, normally from 1/2” to 2 1/2”, thickness from 0.049 in (1.24mm) to 0.15 in (3.81mm). Length can be fixed or random
The maximum outer diameter of ASTM A270 tubing is 12 inches (304.8 mm).
ASTM A270 tubing using inch-pound as the standard unit of measure.
Wall thickness tolerance shall not vary more than 12.5%.
|
Tolerance | a) Outer Diameter: +/- 0.2mm |
| b) Thickness: +/- 0.02mm | |
| c) Length: +/- 5mm | |
| End | PE/Plain Ends, BE/Beveled Ends |
| Technique | cold drawn |
| Application | chemical industry, decoration, building, Food plant, etc. |
| Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT |
ASTM A270 TP316L Stainless Steel Welded Pipe Equivalent Grade
| GRADE | UNS | WERKSTOFF NR. | JIS | AFNOR | BS | GOST | EN | SS |
| USA | GERMAN | JAPAN | RUSSIAN | BRITISH | RUSSIAN | EUROPE | SWEDISH | |
| TP 316L | S31603 | 1.4404 / 1.4435 | SUS 316L | Z3CND17‐11‐02 / Z3CND18‐14‐03 | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 | 2348 |
ASTM A270 TP316L Stainless Steel Welded Pipe Chemical Composition
| GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
ASTM A270 TP316L Stainless Steel Welded Pipe Mechanical Properties
| Material | Heat | Temperure º F(º C) | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| TP316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
ASTM A270 TP316L Stainless Steel Welded Pipe Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| ASTM A270 TP316L | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
What the Difference Between Sanitary Seamless and Welded Pipe?
Sanitary seamless pipes are produced by piercing a solid billet of stainless steel and then drawing it over a mandrel to create the desired shape and size. This process results in a pipe with a smooth, continuous surface that is free from any welds or seams.
Sanitary welded pipes are made by rolling a flat strip of stainless steel into a tube shape and welding the edges together using a Tungsten Inert Gas (TIG) welding process. This process can result in a pipe with a slightly uneven surface due to the presence of the weld seam.
Both types of pipes can be used in sanitary applications as long as they meet the required standards for cleanliness, corrosion resistance, and surface finish. However, seamless pipes are generally preferred in applications where a completely smooth surface is required to prevent the buildup of bacteria and other contaminants.
Application
1.Industrial hydraulic
2.Automobile industry
3.Industrial machinery industry
4.Industrial automation
5.Rail transit
6.Heat exchange
7.Seamless pipe
8.Decoration works
9.Other
