Customized Q235 Q345 Ss400 Hot Rolled Erw Welding Carbon Steel Round Tubes
| Item | Description |
| Type | Welded Carbon Steel Pipe |
| Materials | API 5L, ASTM A53, ASTM A106 Grade B, or customer required materials |
| Outer Diameter | 17–914 mm (3/8"–36") |
| Wall Thickness | SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS |
| Length | Single random length / Double random length / 5–14 m / 5.8 m / 6 m / 10–12 m / 12 m or customized |
| End Type | Plain end, beveled end, threaded, grooved, coupling, with plastic caps |
| Surface Treatment | Black painted, varnished, galvanized, anti-corrosion coating (3PE / PP / EP / FBE) |
| Manufacturing Process | Hot rolled / Cold drawn / Hot expanded |
| Testing Methods | Hydrostatic test, ultrasonic test, eddy current test, flaw detection, chemical & mechanical inspection |
| Packaging | Bundled with steel strips; plastic woven bags; wooden cases; loose packing for large pipes; suitable for container or bulk shipment |
| Origin | China |
| Applications | Oil, gas, water transmission pipelines |
| Third Party Inspection | SGS, BV, MTC available |
| Trade Terms | FOB, CIF, CFR |
| Payment Terms | FOB: 30% T/T deposit, 70% before shipment; CIF: 30% advance + balance before shipment; or 100% irrevocable L/C at sight |
| MOQ | 10 tons |
| Supply Capacity | 5000 tons/month |
| Delivery Time | 10–45 days after advance payment |
Size Chart:
| DN | OD Outside Diameter |
ASTM A36 GR. A Round Steel Pipe | BS1387 EN10255 | ||||
| SCH10S | STD SCH40 | LIGHT | MEDIUM | HEAVY | |||
| MM | INCH | MM | (mm) | (mm) | (mm) | (mm) | (mm) |
| 15 | 1/2” | 21.3 | 2.11 | 2.77 | 2 | 2.6 | - |
| 20 | 3/4” | 26.7 | 2.11 | 2.87 | 2.3 | 2.6 | 3.2 |
| 25 | 1” | 33.4 | 2.77 | 3.38 | 2.6 | 3.2 | 4 |
| 32 | 1-1/4” | 42.2 | 2.77 | 3.56 | 2.6 | 3.2 | 4 |
| 40 | 1-1/2” | 48.3 | 2.77 | 3.68 | 2.9 | 3.2 | 4 |
| 50 | 2” | 60.3 | 2.77 | 3.91 | 2.9 | 3.6 | 4.5 |
| 65 | 2-1/2” | 73 | 3.05 | 5.16 | 3.2 | 3.6 | 4.5 |
| 80 | 3” | 88.9 | 3.05 | 5.49 | 3.2 | 4 | 5 |
| 100 | 4” | 114.3 | 3.05 | 6.02 | 3.6 | 4.5 | 5.4 |
| 125 | 5” | 141.3 | 3.4 | 6.55 | - | 5 | 5.4 |
| 150 | 6” | 168.3 | 3.4 | 7.11 | - | 5 | 5.4 |
| 200 | 8” | 219.1 | 3.76 | 8.18 | - | - | - |
All products are manufactured strictly in accordance with the contract specifications, with a controlled thickness tolerance of ±0.01mm to ensure high precision and consistent quality.
We use laser cutting technology to achieve smooth, clean, and accurate edges. Straight A36 steel pipes are supplied with a high-quality galvanized surface finish. Standard cutting lengths range from 6–12 meters, and we also provide 20ft and 40ft American standard sizes. Customized lengths, such as 13 meters or other specifications, are available upon request.
With a warehouse capacity of over 50,000 meters and a daily output exceeding 5,000 tons, we ensure fast delivery, stable supply, and highly competitive pricing for global projects.
Main Application:
1. Fluid / Gas delivery, Steel structure, Construction;
2. ROYAL GROUP ERW/Welded round carbon steel pipes, which with Highest quality and strong supply ability are widely used in Steel structure and Construction.
Note:
1. Free sampling, 100% after-sales quality assurance, Support any payment method;
2. All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.
First, the raw material (steel plate or strip coil) is uncoiled and flattened. The strip is then cut and edge-prepared, followed by welding and forming. After forming, inner and outer weld beads are removed to ensure a smooth surface.
Next, the pipe undergoes pre-correction, induction heat treatment, sizing, and straightening. It is then inspected through eddy current testing and hydrostatic pressure testing to ensure quality and safety.
Finally, the product is processed through pickling, final quality inspection, and dimensional checks. After passing all inspections, the pipes are packaged and released for shipment.
Packaging is generally naked, steel wire binding, very strong.
If you have special requirements, you can use rust proof packaging, and more beautiful.
Precautions for packaging and transportation of A500 Steel Pipe
1. Carbon steel pipes must be protected from damage caused by collision, extrusion and cuts during transportation, storage and use.
2. When using A53 Steel Pipe, you should follow the corresponding safety operating procedures and pay attention to prevent explosions, fires, poisoning and other accidents.
3. During use, carbon steel pipes should avoid contact with high temperatures, corrosive media, etc. If used in these environments, carbon steel pipes made of special materials such as high temperature resistance and corrosion resistance should be selected.
4. When selecting Carbon Steel Pipe, carbon steel pipes of suitable materials and specifications should be selected based on comprehensive considerations such as the use environment, medium properties, pressure, temperature and other factors.
5. Before carbon steel pipes are used, necessary inspections and tests should be carried out to ensure that their quality meets the requirements.
Transportation: Express (Sample Delivery), Air, Rail, Land, Sea shipping (FCL or LCL or Bulk)
Our Customer
Q1: What raw materials are used in steel pipe production?
A: Steel plates or strip coils are used as the main raw materials.
Q2: What is the purpose of the forming and welding process?
A: It shapes the steel into pipe form and ensures strong, continuous weld seams.
Q3: Why is heat treatment required?
A: It improves mechanical strength and ensures uniform material performance.
Q4: What quality tests are performed?
A: Eddy current testing and hydrostatic pressure testing are used to ensure safety and integrity.
Q5: Why is pickling necessary?
A: It removes surface impurities and improves corrosion resistance.
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