ASTM A179/A179M, ASME SA179/SA179M is the standard applicable to Seamless cold drawn low carbon steel heat exchanger and condenser tubes.
When we place a specific order for SA 179 tubing, we should include below material specifications:
- Standard and the name of material: ASTM A179 / ASME SA 179 seamless tubes.
- Manufacturing types in cold drawn
- Size including Diameters and minimum wall thickness
ASTM A179 / A179M – 90a(2012) Standard
There are probably hundreds of different methods for packing a abrasion resistant pipe and Elbows, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.
ASTM A179 Tubes 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.
Because of ASTM A179 grade’s temperature withstanding capabilities, it is applied to steel pipe of tubular heat exchanger, condensers and similar heat transfer equipment. Our ASTM A179 seamless tubes are used in sugar mills & distilleries, pumps and petrochemicals, cement and construction industries and steel plants. Sunny Steel can supply ASTM A179 steel tube from stock or from reputed steel mills. We also offer steel fabrication service where steel plates can go through processings like cutting, welding, bending, machining, pre-coating, pre-lined, beveling, or as you require.
This specification covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Tubes 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.
ASTMA179/ASME SA179 standard is applicable for steel pipes together with outside diameter of 1/8in-3in. (32 mm to 76.2 mm). Our rolling technology has reached the international advanced spot. JST is able to manufacture cold drawn seamless steel tubes with uniform wall depth. Their tolerance is relatively smaller standard your own.
When seamless carbon steel pipes are during the last cold drawing procedure, they will enter micro oxidization and non-oxidation heat treatment furnace for thermal treatment (Temperature is 1200℉ (650℃) if not more.). This makes the surface of cold drawn seamless steel tubes match the no oxide scale standards, and guarantees smooth surface and stable performance.
JST adopts professional hardness testing equipment to find out the hardness of seamless carbon steel pipes. The Rockwell hardness value not able to exceed 72 HRB.
Top rated program customers’ requirements, we can analyze the cold drawn seamless steel tube advertise its chemical composition meet standards. We choose one from 250 pipes or select one in a furnace to investigate. If the product analysis fails, then choose another two seamless carbon steel pipes. All elements of two steel pipes tend to be in accordance with standards, and then these pipes can be delivered.
- Mill test certificates will be issued according to EN10204.3
- All tubes shall be supplied as per applicable ASTM Specification.
- The tubes Shall be Seamless and the testing shall be as per A 450 / A450M.
Steel pipe features specifications
|O.D.(mm)||Wall Thickness Unit(mm)|
Grade and Chemical Composition (%) of ASTM A179 Tubes
Mechanical properties of ASTM A179 Tubes
|Yield Strength (Mpa)||Tensile Strength (Mpa)||Elongation (%)|
Tensile Strengths of ASTM A179 Tubes at Temperatures
Yield Strength of ASTM A179 Tubes at Temperatures
Tolerance of OD and W.T(SA-450/SA-450M):
|OD In (mm)||+||-||WT In(mm)||+||-|
- Pharmaceutical Equipment
- Chemical Equipment
- Sea Water Equipment
- Heat Exchangers
- Pulp and Paper Industry
- Off-Shore Oil Drilling Companies
- Power Generation
- Gas Processing
- Specialty Chemicals
U-Bend Fabrication Tolerances
|Nominal bend radius ≤ 2 x nominal OD||less than or equal to 12%|
|Ovality||2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD||less than or equal to 10%|
|Nominal bend radius > 4 x nominal OD||less than or equal to 5%|
|Nominal bend radius ≤ 2 x nominal OD||0.75 x nominal wall|
|Mimimum wall thickness||2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD||0.8 x nominal wall|
|Nominal bend radius > 4 x nominal OD||0.9 x nominal wall|
|Nominal bend radius ≤ 8" (200mm)||+/-3/64"(1mm)|
|Bending Radius||8" (200mm) < Nominal bend radius ≤ 16" (400mm)||+/-1/16"(1mm)|
|Nominal bend radius >16" (400mm)||+/-5/64"(1mm)|
|Disrance between legs||Max 1/16"(1.5mm)|
|Wall thinning of bending area||Max 17%|
|Difference between leg lengths at the ends||Leg length ≤ 16' (4.88m)||+1/8"(3mm)|
|Leg length > 16' (4.88m)||+3/16"(5mm)|
|Deviation from plane of bend||≤ 3/16"(1.5mm)|
|Flattening on bend||≤ 10% nominal diameter|
|Straight leg length||≤5m||+1/8"(3mm)|
|Total tube length including radius||≤6m||+3/16(5mm)|