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LINE PIPE
Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore.
Available grades of A519 steel pipe include 1026, 4130, and 4140. It covers several grades of hot-rolled or cold-rolled carbon steel or alloy steel mechanical pipes. ASTM A519 Grade 1026 Seamless Pipe Designation 4130 Tensile/Mechanical Properties: Hot Rolled Ultimate Strength 90 ksi, 621 Mpa, Yield Strength 70 ksi, 483 Mpa, Hardness 89.
Seamless Mechanical Tube A519 Specifications
| A519 Cd Seamless Tube Standard | ASTM A519 GR. 4130, ASTM A519 Grade 4130 (with IBR Test Certificate) |
|---|---|
| Sch. & Swg. | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg., 3.6 mm Thk |
| ASTM A519 Tubing Thickness | 3-12mm |
| ASTM A519 Tubing Tolerance | Cold drawn pipe: +/-0.1mm
Cold rolled pipe: +/-0.05mm |
| Craft | Cold rolled and Cold drawn |
| ASTM A519 Tubing Type | Seamless / ERW / Welded / Fabricated |
| Form of | Round, Square, Rectangular, Hydraulic Etc. |
| ASTM A519 Tubing Length | Standard Double & In Cut length also. |
| Tubing End | Plain End, Beveled End, Treaded |
| Specialized in | ASTM A519 Grade 4130 Boiler Tube, ASTM A519 Grade 4130 Heater Tube, ASTM A519 Grade 4130 Heat Exchanger Tube |
A519 Pipe Tolerances
When looking at A519 pipe tolerances, it is important to note that in the A519 Grade 4130 cold drawing process, the inner and outer diameters of A519 pipe will experience uniform tolerances compared to hot rolled steel products. This gives A519 pipe increased strength and enhanced machinability.
| Condition | Nominal Yield Strength psi |
Nominal Ultimate Strength psi |
Nominal Elongation in 2% |
Equivalent Rockwell Hardness |
Equivalent Brinell Hardness |
|---|---|---|---|---|---|
| GRADE 1018 c .15/.20 Mn .60/90 P .40 max S .050 max |
|||||
| Hot-Rolled | 35,000 | 60,000 | 30 | B-68 | 116 |
| Normalized | 38,000 | 58,000 | 35 | B-66 | 114 |
| Soft-Annealed | 33,000 | 50,000 | 40 | B-57 | 97 |
| As-Drawn | 70,000 | 85,000 | 10 | B-87 | 170 |
| CD-Stress Relief Annealed | 60,000 | 80,000 | 15 | B-85 | 163 |
