China High-Temperature Service ASTM A106 A53 Gra/API 5L Grb/A179 A192 Thick Wall/Thin Wall Carbon Seamless Steel Tube/Galvanized Pipe
Overview
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ASTM A106 GR. B Seamless steel pipe has good welding performance. Due to the low C content, there is generally no serious hardening structure due to welding, and the welded joint has good plasticity and toughness. The whole welding process can obtain satisfactory welding joint without special technological measures.
ASTM A106 GR. B and 20# are similar in chemical composition and mechanical properties and are often substituted for each other, but differences do exist, especially with regard to extended use requirements.For example, taking 20# as an example, GB50316 stipulates that the minimum operating temperature of GB8163 20# steel tube is -19℃, while ASMR B31.3 stipulates that the minimum applicable temperature of A106 GR. B steel tube is -29℃, and there is the condition of no impact test.Although there are differences in the design specifications, the deep reason is the difference in the control level of Mn content.The manufacturer may not be aware of these extensions, but the purchaser should be aware of these differences and inform the manufacturer of the requirements at the time of purchase, otherwise problems may arise under more stringent requirements.
Application
Seamless steel pipe for high temperature operation ASTM A106, suitable for high temperature
Main Grade
Grade of high-quality carbon structural steel: GR.A,GR.B,GR.C
Chemical Component
| Composition, ％ | |||
| Grade A | Grade B | Grade C | |
| Carbon, max | 0.25A | 0.3B | 0.35B |
| Manganese | 0.27-0.93 | 0.29-1.06 | 0.29-1.06 |
| Phosphorus, max | 0.035 | 0.035 | 0.035 |
| Sulfur, max | 0.035 | 0.035 | 0.035 |
| Silicon, min | 0.10 | 0.10 | 0.10 |
| Chrome, maxC | 0.40 | 0.40 | 0.40 |
| Copper, maxC | 0.40 | 0.40 | 0.40 |
| Molybdenum, maxC | 0.15 | 0.15 | 0.15 |
| Nickel, maxC | 0.40 | 0.40 | 0.40 |
| Vanadium, maxC | 0.08 | 0.08 | 0.08 |
| A For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.35%. | |||
| B Unless otherwise specified by the purchaser, for each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.65%. | |||
| C These five elements combined shall not exceed 1%. | |||
Mechanical Property
| Grade A | Grade B | Grade C | ||||||
| Tensile strength, min, psi(MPa) | 48 000(330) | 60 000(415) | 70 000(485) | |||||
| Yield strength, min, psi(MPa) | 30 000(205) | 35 000(240) | 40 000(275) | |||||
| Longitudinal | Transverse | Longitudinal | Transverse | Longitudinal | Transverse | |||
| Elongation in 2 in. (50 mm), min, % Basic minimum elongation transverse strip tests, and for all small sizes tested in full section |
35 | 25 | 30 | 16.5 | 30 | 16.5 | ||
| When standard round 2-in. (50-mm) gauge length test specimen is used | 28 | 20 | 22 | 12 | 20 | 12 | ||
| For longitudinal strip tests | A | A | A | |||||
| For transverse strip tests, a deduction for each 1/32-in. (0.8-mm) decrease in wall thickness below 5/16 in. (7.9 mm) from the basic minimum elongation of the following percentage shall be made | 1.25 | 1.00 | 1.00 | |||||
| A The minimum elongation in 2 in. (50 mm) shall be determined by the following equation: | ||||||||
| e=625000A 0.2 / U 0.9 | ||||||||
| for inch-pound units, and | ||||||||
| e=1940A 0.2 / U 0.9 | ||||||||
| for SI units, | ||||||||
| where: e = minimum elongation in 2 in. (50 mm), %, rounded to the nearest 0.5%, A = cross-sectional area of the tension test specimen, in.2 (mm2), based upon specified outside diameter or nominal specified outside diameter or nominal specimen width and specified wall thickness, rounded to the nearest 0.01 in.2 (1 mm2). (If the area thus calculated is equal to or greater than 0.75 in.2 (500 mm2), then the value 0.75 in.2 (500 mm2) shall be used.), and U = specified tensile strength, psi (MPa). |
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Test Requirement
In addition to ensuring chemical composition and mechanical properties, hydrostatic tests are performed one by one, and flaring and flattening tests are performed. . In addition, there are certain requirements for the microstructure, grain size, and decarburization layer of the finished steel pipe.
Supply Ability
Supply Ability: 1000 Tons Per Month Per Grade of ASTM SA-106 Steel Pipe
Packaging
In Bundles And In Strong Wooden Box
Delivery
7-14 days if in stock, 30-45 days to produce
Payment
30% depsoit, 70% L/C or B/L copy or 100% L/C at sight
Product Detail
Boiler Tube
GB/T5310-2017
ASME SA-106/SA-106M-2015
ASTMA210(A210M)-2012
ASME SA-213/SA-213M
