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ASTM A333 Grade 6 Low-Temperature Seamless Steel Pipe
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ASTM A333 Grade 6 Low-Temperature Seamless and Welded Steel Pipe
ASTM A333 Grade 6 is a grade of ASTM A333.ASTM A333 Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications with Required Notch Toughness.
ASTM A333 Grade 6 Low-Temperature Seamless and Welded Steel Pipe Quick Details
Company Name: beite steel pipe
Country/Region: China
Product Name：ASTM A333 Grade 6 Steel Pipe
FOB Price: US $1300-2600 / Ton | 1 Ton/Tons (Min. Order)
Port of Shipment：Tianjin,China
Payment：L/C or T/T
Delivery: 7-15 days after payment
Package：Standard export package,suit for all kinds of transport, or as required.
ASTM A333 Grade 6 Steel Pipe Dimensional Range & Specification
Outside Diameter：20 – 215mm
Wall thickness：3.4mm——15mm
Length：6000mm、12000m or specified length as required.
Materials and Manufacture
Manufacture—The pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
Heat Treatment:
Normalize by heating to a uniform temperature of not less than 1500°F [815°C] and cool in air or in the cooling chamber of an atmosphere controlled furnace,reheat to a suitable tempering temperature.
For the seamless process only, reheat and control hot working and the temperature of the hot-finishing operation to a finishing temperature range from 1550 to 1750°F [845 to 945°C] and cool in air or in a controlled atmosphere furnace from an initial temperature of not less than 1550°F [845°C].
Seamless pipe of Grades 6 may be heat treated by heating to a uniform temperature of not less than 1500°F [815°C], followed by quenching in liquid and reheating to a suitable tempering temperature
Chemical Composition(%) & Physical Properties of ASTM A333 Grade 6 Steel Pipe
ASTM A333 Grade 6 Steel Pipe Chemical Composition(%)
| Steel Grade | Chemical Composition(%) | ||||||||||||
| C | Mn | P | S | Si | |||||||||
| Grade 6 | ≤0.30 | 0.29-1.06 | ≤0.025 | ≤0.025 | ≥0.10 | ||||||||
When Grades 6 are ordered under this specification, supplying an alloy grade that specifically re- quires the addition of any element other than those listed for the ordered grade in Table 1 is not permitted. However, the addition of elements required for the deoxidation of the steel is permitted.
Mechanical Properties
Tensile Requirements Of ASTM A333 Grade 6 Steel Pipe
| / | Grade 6 | |
| / | Ksi | Mpa |
| Tensile strength, min | 60 | 415 |
| Yield strength, min | 35 | 240 |
| Longitudinal | Transverse | |
| Elongation in 2 in. or 50 mm, (or 4D), min, %: | ||
| Basic minimum elongation for walls 5⁄16 in. [8 mm] and over in thickness, strip tests, and for all small sizes tested in full section | 30 | 16.5 |
| When standard round 2-in. or 50-mm gage length or proportionally smaller size test specimen with the gage length equal to 4D (4 times the diameter) is used | 22 | 12 |
| For strip tests, a deduction for each 1⁄32 in. [0.8 mm] decrease in wall thickness below 5⁄16 in. [8 mm] from the basic minimum elongation of the following percentage | 1.50B | 1.00B |
| Wall Thickness | Elongation in 2 in. or 50 mm, min, %C | ||
| Grade 6 | |||
| in. | mm | Longi- tudinal |
Trans- verse |
| 5⁄16 (0.312) | 8 | 30 | 16 |
| 9⁄32 (0.281) | 7.2 | 28 | 15 |
| 1⁄4 (0.250) | 6.4 | 27 | 15 |
| 7⁄32 (0.219) | 5.6 | 26 | .... |
| 3⁄16 (0.188) | 4.8 | 24 | .... |
| 5⁄32 (0.156) | 4 | 22 | .... |
| 1⁄8 (0.125) | 3.2 | 21 | .... |
| 3⁄32 (0.094) | 2.4 | 20 | .... |
| 1⁄16 (0.062) | 1.6 | 18 | .... |
B The following table gives the calculated minimum values.
C Calculated elongation requirements shall be rounded to the nearest whole number.
Note:The preceding table gives the computed minimum elongation values for each 1⁄32in. [0.80mm] decrease in wall thickness. Where the wall thickness lies between two values shown above, the minimum elongation value is determined by the following equation:
| Grade | Direction of Test | Equation |
| 6 | Longitudinal | E = 32t + 6.50 [E = 1.25t+ 6.50] |
| Transverse | E = 32t + 6.50 [E = 1.25t + 6.50] | |
| where: E = elongation in 2 in. or 50 mm, in %, and t = actual thickness of specimen, in. [mm]. |
||
Lengths
If definite lengths are not required, pipe may be ordered in single random lengths of 16 to 22 ft with 5 % 12 to 16 ft, or in double random lengths with a minimum average of 35 ft and a minimum length of 22 ft with 5 % 16 to 22 ft.
Workmanship, Finish and Appearance
1.The pipe manufacturer shall explore a sufficient num- ber of visual surface imperfections to provide reasonable assurance that they have been properly evaluated with respect to depth.
2.Surface imperfections that penetrate more than 12½ % of the nominal wall thickness or encroach on the minimum wall thickness shall be considered defects.
3.The finished pipe shall be reasonably straight.
Mechanical Testing
Sampling—For mechanical testing
1.Transverse or Longitudinal Tensile Test and Flattening Test
2..Hydrostatic Test—Each length of pipe shall be sub- jected to the hydrostatic test.
3.Impact Test
Impact Tests (Welded Pipe)
Impact Test
Except when the size of the finished pipe is insufficient to permit obtaining subsize impact specimens, all material furnished to this specification and marked in accordance with Section 16 shall be tested for impact resistance at the minimum temperature for the respective grades
| Steel Grade | Impact temperature | ||||||||||||
| ℉ | ℃ | ||||||||||||
| Grade 6 | -50 | -45 | |||||||||||
Hydrostatic or Nondestructive Electric Test
Nondestructive Electric Test—Nondestructive electric tests shall be in accordance with Specification A 999/A 999M, with the following addition:
If the test signals were produced by visual imperfec- tions (D), the pipe may be accepted based on visual examination, provided the imperfection is less than 0.004 in. (0.1 mm) or 12½ % of the specified wall thickness(whichever is greater).
D:
Visual Imperfections: Scratches, Surface roughness, Dings, Straightener marks, Cutting chips, Steel die stamps, Stop marks, or Pipe reducer ripple.
Product Marking
Except as modified in 16.1.1, in addition to the marking prescribed in Specification A 999/A 999M, the mark- ing shall include whether hot finished, cold drawn, seamless or welded, the schedule number and the letters “LT” followed by the temperature at which the impact tests were made, except when a lower test temperature is required because of reduced specimen size, in which case, the higher impact test tempera- ture applicable to a full-size specimen should be marked
Types of Packaging:
- Bundles (hexagonal)
- Wooden Boxes
- Crates (steel/wooden)
- Special crates for U-Bend tubes with each radius separated
- Our ASTM A333 Grade 6 Steel Pipe packing can meet any needs of the customers.
Delivery: 7-15 days after payment
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