ASME SA179 Seamless Boiler Tube Specification
ASTM A179 Tube specification covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers,
condensers, and similar heat transfer apparatus. SA 179 tube shall be made by the seamless process and shall be cold drawn. Heat and
product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese,
phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test.
| Standards | ASTM, ASME and API |
| Size | 1/2” NB to 36” NB,O.D.: 6.0~114.0; W.T.: 1~15; L: max 12000 |
| Thickness | 3-12mm |
| Schedules | SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules |
| Tolerance | Cold drawn pipe: +/-0.1mmCold rolled pipe: +/-0.05mm |
| Craft | Cold rolled and Cold drawn |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| Length | Min 3 Meters, Max18 Meters, or according to customer’s requirement |
| End | Plain End, Beveled End, Treaded |
| Specialized in | Large Diameter ASTM A179 Pipe |
| Additional Testing | NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc. |
| ASTM A179 Pipe Types | Out diameter | Wall thickness | Length |
| ASTM A179 Seamless Tube (Custom Sizes) | 1/2" NB - 60" NB | SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160 | Custom |
| ASTM A179 Welded Tube (in Stock + Custom Sizes) | 1/2" NB - 24" NB | As per requirement | Custom |
| ASTM A179 ERW Tube (Custom Sizes) | 1/2" NB - 24" NB | As per requirement | Custom |
| ASTM A179 Heat Exchanger Tube | 16" NB - 100" NB | As per requirement | Custo |
Applications
There are a number of ASTM A179 seamless pipe applications and these include ASTM A179 seamless pipe being used in industries such as food, chemical, industrial pipelines, medical field, instruments, light industry, mechanical structure parts, petroleum, machinery, etc. SA 179 Seamless Tube are also used in heat transfer equipment, condensers and heat exchangers.
Chemical Requirements FOR ASTM A179 Seamless Boiler Tube
| C, % | Mn, % | P, % | S, % |
| 0.06-0.18 | 0.27-0.63 | 0.035 max | 0.035 max |
Mechanical Requirements FOR ASTM A179 Seamless Boiler Tube
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Hardness, HRB |
| 325 min | 180 min | 35 min | 72 max |
Equivalent Grades
| Grade | ASTM A179 / ASME SA179 | |
| UNS No | K01200 | |
| Old British | BS | CFS 320 |
| German | No | 1629 / 17175 |
| Number | 1.0309 / 1.0305 | |
| Belgian | 629 | |
| Japanese JIS | D3563 / G3461 | |
| French | A49-215 | |
| Italian | 5462 | |
