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Help CenterStainless Steel Seamless Pipe for Low and Medium Pressure and High Pressure316/347/347H /405/410/31803/32750/32760/904L
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| Product parameters | |
| Product Name | Straight seam welded pipe |
| Standard | GB/T-13793/2016 |
| Material Science | Q195/Q235/Q355/Q460 |
| Thickness | 1.0mm-6.0mm |
| outside diameter | 4.2mm-89mm |
| Surface Treatment | Oil coating and surface oxidation treatment |
| Pipe Length | 6M-10M or according to customer requirements |
| Application | Applied to buildings, automobiles, boilers, furniture, tunnels, etc |
| Advantages | 1. Reasonable price and excellent quality 2. Adequate inventory and timely delivery 3. Reliable freight forwarder, 3 hours away from the port. "advantage |
| Packaging | Bundled packaging (maximum 2 tons); There are two straps at both ends of the bundling tube for easy loading and unloading; packing |
To ensure the tubes meet the required standards, they are subjected to several tests like the Product Analysis, Hardness, Mechanical, Flattening, Flaring, Hydrostatic, or NDT tests, based on the client’s test requirements. The tubes must also conform to the applicable provisions of the current edition of Specification A 450/A 450M.
The ASTM A179 Tubes come in different sizes and varying wall thicknesses, and U-bending tubes can also be offered. Additionally, the tubes are subject to various test requirements, including ASTM A179 Tubes (ASME SA179 Tubes) Chemical Compositions, Mechanical Properties, Wall Thickness Tolerance, Outside Diameter Tolerance, Cut Length Tolerance, and Hydrostatic Test Pressures, to ensure quality.
Applications
The applications include tubular heat exchangers, condensers, and similar heat transfer apparatuses.
Typical Size
It is important to note that the ASTM A179/ASME SA179 is a standard that covers tubes ranging from 1/8 to 3 in. [3.2 to 76.2 mm] as typical size, inclusive, in outside diameter. Mechanical property requirements do not apply to tubing smaller than 1/8 in, [3.2 mm] in outer diameter or with a wall thickness under 0.015 inches [0.4 mm].
Normal Size
OD. (In,mm):
3/4” (19.05mm);
1” (25.4mm);
1¼” (31.75mm);
1½” (38.1mm);
2” (50.8mm);
2½” (63.5mm);
3” (76.2mm).
Wall Thickness (BWG, mm)
16BWG (1.651mm);
14BWG(2.108mm);
12BWG(2.769mm);
10BWG(3.404mm);
8BWG(4.191mm)
Length(ft, mm):
16ft(4877mm);
20ft(6096mm);
24ft(7315mm);
Any other fixed length.
Max length is 28000mm
U-bending can also be offered.Test requirementsChemical Compositions of ASTM A179 Tubes
Chemical Components (%) | |||||||
C |
Si | Mn | P | S | Mo | Cr | V |
| 0.06-0.18 | / | 0.27-0.63 | ≤0.035 | ≤0.035 | / | / | / |
Mechanical Properties of ASTM A179 Tubes
Mechanical Properties | |||
Tensile |
Yield Strength (Mpa) |
Elongation (%) |
Hardness (HRB) |
| ≥325 | ≥180 | ≥35 | ≤72 |
Wall Thickness Tolerance of test requirements
Seamless, Cold-Finished Tubes | ||
Outside Diameter |
Wall thickness Tolerance % | |
Over (+) |
Under (-) |
|
1 ½ (38.1) |
20 | 0 |
| Over 1½ (38.1) | 22 | 0 |
Outside Diameter Tolerance of test requirements
Cold-Finished Seamless Tubes | ||
Outside Diameter |
Permissible Variations In. (mm) | |
| Over (+) | Under (-) |
|
Under 1 (25.4) |
0.004 (0.1) | 0.004 (0.1) |
1 to 1 ½ (25.4 to 38.1), Incl |
0.006 (0.15) | 0.006 (0.15) |
Over 11⁄2 to 2 [38.1 to 50.8], Excl |
0.008 (0.2) | 0.008 (0.2) |
| 2 to 21⁄2 [50.8 to 63.5], Excl | 0.010 (0.25) | 0.010 (0.25) |
| 21⁄2 to 3 [63.5 to 76.2], Excl | 0.012 (0.3) | 0.012 (0.3) |
Cut Length Tolerance
| Cold-Finished Seamless Tubes | ||
| Outside diameter, In.(mm) |
Cut length, in. (mm) | |
| Over(+) | Under(-) | |
| All Sizes | 3⁄16 [5] | 0 [0] |
| Under 2 [50.8] | 1⁄8 [3] | 0 [0] |
| 2 [50.8] and over | 3⁄16 [5] | 0 [0] |
| Under 2 [50.8] | 1⁄8 [3] | 0 [0] |
| 2 [50.8] and over | 3⁄16 [5] | 0 [0] |
| These permissible variations in length apply to tubes before bending. They used to cut lengths up to 24 ft [7.3 m]. For lengths longer than 24 ft [7.3 m], the above over-tolerances shall be increased by 1⁄8 in. [3 mm] for each 10 ft [3 m] or fraction over 24 ft or 1⁄2 in. [13 mm], whichever is the lesser. | ||
Hydrostatic Test Pressures of test requirements
Hydrostatic Test Pressures | |
Outside Diameter of Tube, in. [mm] |
Hydrostatic Test Pressure, psi [Mpa] |
Under 1 [25.4] |
1000 [7] |
| 1 to 11⁄2 [25.4 to 38.1], excl | 1500 [10] |
| 11⁄2 to 2 [38.1 to 50.8], excl | 2000 [14] |
| 2 to 3 [50.8 to 76.2], excl | 2500 [17] |
Scope of ASTM A179 Tubes
1. ASTM A179 Tubes (ASME SA179 Tubes) cover minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.
2. ASTM A179 Tubes (ASME SA179 Tubes) cover tubes 1/8 to 3 in. [3.2 to 76.2 mm], inclusive, in outside diameter. Tubing smaller in outer diameter and having a thinner wall than indicated in this specification is available. Mechanical property requirements do not apply to tubing smaller than 1/8 in, [3.2 mm] in outside diameter, or with a wall thickness under 0.015 inches [0.4 mm].
3. The values stated in inch-pound, or SI units, are regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless this specification’s “M” designation is specified in the order.
Note
The tubes are typically used in heat exchangers, condensers, heat transfer equipment, and similar pipe applications.
Mill test certificates are issued according to EN10204.3, and the tubes shall be seamless with testing conducted as per A 450 / A450M.
The application includes heat exchangers, condensers, heat transfer equipment, and similar pipe.
Packing of ASTM A179 Tubes
To protect the tubes during transportation, they are packed in wooden boxes or bundles with plastic paper and suitably protected for sea-worthy delivery. The product marking includes ASTM A179 or ASME SA179, size, heat no., lot number, and Manufacture name or logo.
Zhongzheng Stainless Steel Co., Ltd. was established in 2018 with aregistered capital of 20 million yuan. lt is a manufacturing company thatintegrates the production of special materials, manufacturing andprocessing, sales, and technology development. The company covers anarea of 2,000 square meters and has 200 employees. it has built worldclass stainless steel seamless pipe (hot piercing, cold drawing, cold rollingproduction lines, precision steel pipe production lines, and large, mediumand small-sized welded pipe production lines. The company has beencommitted to providing high performance, high precision, hightemperature-resistant, high pressure-resistant, and corrosion-resistantsolutions and technical services for industrial equipment pipeline systems.The company specializes in producing a series of steel pipes, pipe fittingsflanges, etc., such as high-temperature (nickel-based) alloys, austeniticduplex steel, urea grade stainless steel, super stainless steel, etc. Thecompany is equipped with an annual production capacity of 5,000 tons ofstainless steel seamless pipe production line, 7,000 tons of welded pipeproduction line, and 500 tons of pipe fittings production line, etc. lt canoroduce stainless steel seamless pipes with diameters ranging from Φ6 toΦ762 and wall thicknesses ranging from 0.5 to 70 mm, stainless steelwelded pipes with diameters ranging from Φ15 to Φ2200 and wallthicknesses ranging from 0.5 to 80 mm, pipe fittings, and various stainlesssteel ingots, round steel, rough pipes, etc., according to customerrequirements and in accordance with standards such as GB, ASTM, etc.WORKSHOP
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