Stainless steel pipe and tube
Welded Tube
Stainless steel welded tube products made from strip are roll formed and fusion welded along a longitudinal seam. The welding processes employed by Daxun does not use any filler metals during the welding process.
Welded & Drawn Tubing
Tubular products are welded and then redrawn to a final size. Welded and drawn is ideal to produce heavy wall to diameter tubes that cannot be welded directly to size, but still enjoy the lower cost savings vs. seamless tubes. All Daxun welded and drawn tubes are bright annealed.
Seamless Tubing
Stainless steel seamless tubing products are drawn from tube hollows, which are made by piercing a billet or by a hot extrusion process. Seamless is ideal for very heavy diameter to wall ratios and offers very good outside dimensional tolerances.
Daxun is located in Wuxi, Jiangsu, China
| Product Parameters: Stainless Steel Pipe/Tube | |||
| OD | 3mm~2000mm | thickness | 0.3mm~100mm |
| Standard | ASTM A312 A249 A213 A269 A268 etc | ||
| DATA | SeamlessTube weldedTube precisionTube polishTube picklingTube hairlineTube etc | ||
| shape | Round square rectangle Hexagonal Special-shaped etc | ||
| Grade | 304 304DQ 201 301 304L 304H 309S 310S 316L 316TI 317L 321 347 347H 430 410 410S 420 420J2 430 430LNT 430J1L 434 436L 439 441 443
444 904L 2205 2507 S32750 S32760 445J2 442etc |
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Daxun is a Chinese stainless steel tube manufacturer that produces precision seamless cylindrical shapes and components, including standard tube specifications and tight tolerances, thin-walled tubes, and stainless steel tubes in a variety of materials, including standard tube specifications and titanium alloy tubes, stainless steel tubes , high-strength steel pipes and nickel-based alloy pipes.
Backed by a global service and support network, our Daxun stainless steel seamless pipe and stainless steel welded pipe product lines set the standard for the large diameter, stainless steel pipe requirements of the power, petrochemical, nuclear, aerospace and defense industries.
Brands and characteristics of various stainless steel pipes
Our unparalleled resources, technical expertise and highly skilled workforce produce consistently high quality stainless steel pipe
Duplex stainless steel pipe, with higher strength and corrosion resistance
We produce seamless, high-strength tubing in diameters from 1″ to 50″
Stainless steel pipes made of this material have good high temperature resistance.
317L is a stainless steel pipe produced in accordance with American ASTM standards
Duplex stainless steel pipe, with higher strength and corrosion resistance
Duplex stainless steel pipe, with higher strength and corrosion resistance
904L stainless steel tube and pipe Have good corrosion resistance and performance
Stainless steel square tubes are often used in the construction field and structural parts.
Commonly used grades
Manufacturing Methods
Each tube is manufactured to the strictest regulatory and internal specifications. Daxun’s proprietary forming, welding and finishing processes produce pipe and pipe with superior performance. Some of the stages of manufacturing are randomly listed below.
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Raw Material Selection Conducted based on the supplier’s raw material quality as well as reputation and past performance.
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Pipe forming
Pipe forming: Metal tube blanks are precisely aligned and then roll formed to ensure uniformity and concentricity.
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Annealing
Annealing is the controlled process of heating and cooling metal to reduce hardness, relieve stress and homogenize the material
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cooling straightening
Daxun tolerances are routinely better than industry standards [+/-0.030″ (0.76 mm) in 3′ (0.91 m)].
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Polishing
Mechanical polishing is to 20µ-in Ra (0.5 µm) ID max. and 30µ-in Ra (0.8 µm) OD max. surface.
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Polishing
Passivation is the process of exposing metal to oxygen which creates an oxide film that inhibits corrosion.
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Testing
Eddy Current Testing is performed in-line at the tube mill as well as post off-line annealing in accordance with ASTM E426.
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Final Stage
The cutting and inspection of Daxun stainless steel pipes is completed at the final stage of factory operations. Rejecting defective products is our unchanging original intention.
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Packaging for Shipment
Each shipment is labeled with a bar code for identification and proper routing. Should the tubing or pipe possess polished finishes, they will be individually poly-wrapped and shipped in cardboard boxes.
Main features of stainless steel pipes
Excellent corrosion resistance in extreme environments
Many types of stainless steel pipes have very high strengthMany types of stainless steel pipes have very high strength
Suitable for situations where magnetic field interference is avoided
The ability to withstand very high temperatures makes nickel alloys perfect for onshore, offshore and power generation applications.
Daxun stainless steel pipe manufacturing capabilities
Forming capabilities include state-of-the art extrusion and cold working assets for manufacturing tube and pipe products, one of the world’s largest pilger mills, and a unique hydroforming processes to manufacture fittings.
Daxun’s pipe processing capabilities
As a vertically integrated manufacturer, we offer a one-stop shop and we have the ability to handle anything, whether it’s an entire project or just a machining job.Straightening、Drilling、Honing、Trepanning、Cutting、Testing、Boring、Machining、Laser Weld、Polishing、Turning、Specialized Services.
Bigger, Better Pipe Solutions
With vertical and horizontal presses ranging from 12,000 tons to 35,000 tons, Daxun has the most comprehensive pipe extrusion capabilities in the world. Capabilities enable us to manufacture the longest lengths and largest diameter pipes in the industry.
Powerful Pipe Solutions
Daxun supplies the power generation market with ductwork, boiler tubes, main steam tubes, thermal reheat tubes, flue gas desulfurization units and other products for nuclear, coal-fired, renewable energy and combined cycle applications.
Technical Information
We supply pipe and tubing products to the defense industry, as well as a variety of mechanical and structural applications where tubing products are used. High alloy nickel casing and mechanical tube products are used in the world’s most technically demanding industries and applications, including sour environments, high pressures and temperatures.
Chemical processing products include pipe and tube for ethylene production, caustic soda production and heat exchanger tubes. We also make a variety of products for the medical and general industrial industries, including x-ray machines, thermocouple sheathing tubes for industrial furnaces, and boiler tubes.
At Daxun, we have testing laboratory and equipment to ensure that our stainless steel materials are in actual weight and good quality before shipment. Our strict quality control team also performs strict and 100% inspection on all production stages.
Our support and services are not only limited from the beginning of our transactions. Even if you have received your orders, TuoLian will continue to provide excellent after-sales services. We will continue providing assistance and warranty to your orders.
Application cases of stainless steel pipes in different industries - As we serve more and more industries, our pride becomes stronger and stronger. What started as a family business has grown into a global force in tubing.
Daxun Stainless has developed R&D and manufacturing technology for N08825 alloy pipes for high-pressure hydrogen applications. The product and various mechanical, physical and chemical properties have reached the international advanced level, meeting the requirements for the use of alloy seamless pipes for high-pressure hydrogen applications, and realizing high-pressure hydrogen applications. The engineering development of alloy seamless pipe products has formed independent intellectual property rights and industrialization capabilities. It meets the pipe requirements for petroleum hydrogenation units, and also meets the needs of special pipes for nuclear power, petrochemical, coal-to-liquids, chemical industry, aerospace and other major equipment and high-end equipment manufacturing.
In thermal power generation, the use of supercritical units and ultra-supercritical units has increased. The supercritical unit improves the thermal efficiency of the unit by increasing the pressure and temperature of the steam in the boiler. Its steam and water pipelines include reheater tubes, superheater tubes, water wall tubes, economizer tubes, air preheating tubes, heat transfer tubes, and downcomers. And various header pipes are exposed to high temperature and high pressure conditions for a long time, so the steel pipes are required to have high lasting strength, high resistance to oxidation and corrosion and good structural stability. Usually, the number of high-pressure boiler tubes such as Super304H and HR3C consumed per million kilowatts of super (super)critical units is about 1,250 tons.
Daxun developed the manufacturing technology of large-diameter super duplex stainless steel seamless pipes, realized the transformation of scientific and technological achievements into high-tech products for marine engineering, and served as a demonstration for the industrialization of key equipment and systems in high-end ship and marine engineering manufacturing.
Daxun joined the ranks of qualified suppliers and developed the core technology of N08367 seamless and welded steel pipe manufacturing for third-generation nuclear power AP1000, achieving major industrialization goals. Reaching the international advanced and leading level, the implementation of the project will effectively promote the independence of the nuclear power industry, meet the development needs of domestic and foreign advanced nuclear power equipment manufacturing, and ensure the safe operation of nuclear power plants.
Focusing on the performance requirements of welded pipes for LNG, Daxun broke through the key technologies of welding and heat treatment during product processing and manufacturing, and developed large-diameter stainless steel welded pipes for LNG with excellent corrosion resistance, low-temperature toughness and good low-temperature strength.
Can be used in fuselage parts, aerospace equipment, rockets, artificial satellites, missiles, spacecraft shells, pipeline systems, etc.
Serving the petrochemical industry, it can be used in: reaction towers, heat exchangers, pressure shafts, distillation towers, valves, pumps, various pipeline systems, etc. When you choose Daxun as your stainless steel pipe supplier, you know we truly understand the oil and gas industry, contact Daxun today.
When you choose Daxun as your stainless steel pipe supplier, you know we truly understand the armor and automotive industries, contact Daxun today.
Stainless steel pipes are used in the manufacture of ship piping systems, whip antennas, seawater pipes, condensers, heat exchangers, acoustic devices, fire piping, etc.
Deep-sea exploration equipment is one of the important directions in the field of marine engineering, and stainless steel pipes have become an ideal material for various deep-sea exploration equipment due to their corrosion resistance, high strength and other advantages. Deep-sea pipelines, detectors, sonar equipment, etc. can all be made of stainless steel pipes to ensure long-term reliable operation in harsh marine environments.
Serving the pharmaceutical and biopharmaceutical industries has been a welcome challenge for Daxun. From raw material selection to delivery, we have developed high purity and ultra-high purity services to meet and exceed industry standards. When only the best stainless steel tubing and stainless steel pipes can meet the demand, more and more pharmaceutical and biopharmaceutical companies trust Daxun.
Serving the power generation industry, Daxun is able to combine technical expertise and experience to produce the best pipe and pipe available today. When you choose the best, you get the best. Follow what countless other companies have done – trust Daxun. Highly demanding industries need Daxun
Technical Information
- Partial inventory
- ASTM A269 Tolerances
- ASTM A554 Tolerances
- ASTM A312 Tolerances
- Delivery state
- Seamless pipe production process
- Welded pipe production process
| Diam (mm) | Thickness(mm) | Length (mm) | Comment |
| φ3.0-12.0 | 0.3-1.0 | 6000 | AAA |
| φ19.0-22.0 | 0.6-3.0 | 6000 | AAA |
| φ25.0-27.2 | 0.8-10.0 | 6000 | AAA |
| φ32.0-60.3 | 0.8-15.0 | 36000 | AAA |
| φ76.3-102.1 | 0.8-205.0 | 36000 | AAA |
| φ114.3-168.3 | 0.8-20.0 | 6000 | AAA |
| φ180.0-219.2 | 3.0-20.0 | 6000 | AAA |
| φ273.1-325.3 | 4.0-30.0 | 6000 | AAA |
| φ377.2-426.3 | 5.0-30.0 | 6000 | AAA |
| φ508.1-711.0 | 5.0-30.0 | 6000 | AAA |
| 711.0+
|
5.0-30.0
|
6000
|
AAA
If you need to know more about the size, please contact Daxun |
| ASTM A269 | ||||||
| Group | Size, Outside Diameter, in. | Permissible Variations in Outside Diameter, in. (mm) | Permissible Variations in Wall Thickness, % | Permissible Variations in Cut Length, in. (mm) | Thin Walled Tubes | |
| Over | Under | |||||
| 1 | Up to ½ | ±0.005(0.13) | ±15 | ⅛(3.2) | 0 | … |
| 2 | ½ to 1½, excl | ±0.005(0.13) | ±10 | ⅛(3.2) | 0 | less than 0.065 in. (1.65 mm) nominal |
| 3 | 1½ to 3½, excl | ±0.010(0.25) | ±10 | 3/16(4.8) | 0 | less than 0.095 in. (2.41 mm) nominal |
| 4 | 3½ to 5½, excl | ±0.015(0.38) | ±10 | 3/16(4.8) | 0 | less than 0.150 in. (3.81 mm) nominal |
| 5 | 5½ to 8, excl | ±0.030(0.76) | ±10 | 3/16(4.8) | 0 | less than 0.150 in. (3.81 mm) nominal |
| 6 | 8 to 12, excl | ±0.040(1.01) | ±10 | 3/16(4.8) | 0 | less than 0.200 in. (5.08 mm) nominal |
| 7 | 12 to 14, excl | ±0.050(1.26) | ±10 | 3/16(4.8) | 0 | less than 0.220 in. (5.59 mm) nominal |
| ASTM A554 | ||||
| OD Size, in. (mm) | Wall Thickness | OD, ± | ||
| in. | mm | in. | mm | |
| Under ½ (12.7) | 0.020 to 0.049 | 0.51 to 1.24 | 0.004 | 0.1 |
| ½ to 1 (12.7 to 25.4) | 0.020 to 0.065 | 0.51 to 1.65 | 0.005 | 0.13 |
| ½ to 1 (12.7 to 25.4) | over 0.065 to 0.134 | over 1.65 to 3.40 | 0.01 | 0.25 |
| Over 1 to 1½ (25.4 to 38.1), incl | 0.025 to 0.065 | 0.64 to 1.65 | 0.008 | 0.2 |
| Over 1 to 1½ (25.4 to 38.1), incl | over 0.065 to 0.134 | over 1.65 to 3.40 | 0.01 | 0.25 |
| Over 1½ to 2 (38.1 to 50.8), incl | 0.025 to 0.049 | 0.64 to 1.24 | 0.01 | 0.25 |
| Over 1½ to 2 (38.1 to 50.8), incl | over 0.049 to 0.083 | over 1.24 to 2.11 | 0.011 | 0.28 |
| Over 1½ to 2 (38.1 to 50.8), incl | over 0.083 to 0.149 | over 2.11 to 3.78 | 0.012 | 0.3 |
| Over 2 to 2½ (50.8 to 63.5), incl | 0.032 to 0.065 | 0.81 to 1.65 | 0.012 | 0.3 |
| Over 2 to 2½ (50.8 to 63.5), incl | over 0.065 to 0.109 | over 1.65 to 2.77 | 0.013 | 0.33 |
| Over 2 to 2½ (50.8 to 63.5), incl | over 0.109 to 0.165 | over 2.77 to 4.19 | 0.014 | 0.36 |
| Over 2½ to 3½ (63.5 to 88.9), incl | 0.032 to 0.165 | 0.81 to 4.19 | 0.014 | 0.36 |
| Over 2½ to 3½ (63.5 to 88.9), incl | over 0.165 | over 4.19 | 0.02 | 0.51 |
| Over 3½ to 5 (88.9 to 127.0), incl | 0.035 to 0.165 | 0.89 to 4.19 | 0.02 | 0.51 |
| Over 3½ to 5 (88.9 to 127.0), incl | over 0.165 | over 4.19 | 0.025 | 0.64 |
| Over 5 to 7½ (127.0 to 190.5), incl | 0.049 to 0.250 | 1.24 to 6.35 | 0.025 | 0.64 |
| Over 5 to 7½ (127.0 to 190.5), incl | over 0.250 | over 6.35 | 0.03 | 0.76 |
| Over 7½ to 16 (190.5 to 406.4), incl | all | all | 0.00125 in./in. or mm/mm of circumference | |
| ASTM A312 | ||
| NPS Designator | Tolerance, % from Nominal | |
| Over | Under | |
| ⅛ to 2½ incl., all t/D ratios | 20 | 12.5 |
| 3 to 18 incl., t/D up to 5% incl. | 22.5 | 12.5 |
| 3 to 18 incl., t/D > 5% | 15 | 12.5 |
| 20 and larger, welded, all t/D ratios | 17.5 | 12.5 |
| 20 and larger, seamless, t/D up to 5% incl. | 22.5 | 12.5 |
| 20 and larger, seamless, t/D > 5% | 15 | 12.5 |
| Delivery State | |
| Delivery State Choice | Surface Condition |
| Hot Rolled | Silver Bright |
| Polished (320#, 400#, 600#, Mirror finish) | |
| Cold Rolled | Silver Bright |
| Polished (320#, 400#, 600#, Mirror finish) | |
| Note: | |
| 1. If you require different deliver state than the above listed, kindly confirm with us. | |
| 2. In case of any enquiry or order, please kindly let us know any extra requirement not indicated here. | |
Related Product
Daxun Alloy
Regarding stainless steel pipes, we can handle any type of inquiry. Please feel free to ask us. We will make recommendations based on each client’s needs.
Yes, we have complete specifications and inventory and can quickly meet your needs.
Yes, it can be customized. You can contact us and send us the customized specifications and quantity.
Our transportation methods generally include sea transportation, land transportation, and sea transportation. Reach you quickly and safely.
Because our output is high, the cost will be much lower, so the price is low.
We attach great importance to product quality and have passed various quality system tests.