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Chinese Erw Steel Pipe DI 25*25mm Export Manufacturer Black Round Pipe in Stock, Fast Delivery Time, Export Packaging

1.Standard: ASTM A53, BS1387, ISO65, EN10219, JIS, Q195, Q235

2.Size: From 10*10mm to 400*400mm

3.Thickness: 0.2-20mm

4.Tolerance: +/-2%

5.Place of origin: Tianjin, China

6.Delivery Time: 7-10 days in stock,about 30 days for customized

    Specification

    Product name

    Black square Pipe

    Standard

    ASTM A53, BS1387, ISO65, EN10219, JIS, Q195, Q135

    Length

    Standard 5.8m and 6m or as customer requirement

    Size

    From 1/2'' to 20''mm

    Thickness

    0.3-20mm

    Technical

    Hot rolled,cold rolled

    Tolerence

    +/-2%

    Product Advantage

    1. Low cost
    Compared to other types of mechanical pipes, square pipes require less process. Therefore, it can reduce the cost of low budget items.
    2. Create Metal Structure
    You can easily bend, punch or drill a square tubing to bind it to itself or any other material. These characteristics of square pipes make it very easy to build metal structures.
    3. Resistance
    It is fire resistant and does not twist, split or shrink.

    4. Good service

    we offer reliable black pipe quality at reasonable prices, with the best service awareness and a people-oriented approach.

    5. Broad Application Scenarios

    Thanks to its outstanding features (including easy processing, fire resistance and cost-effectiveness), square pipes are widely used in multiple fields—such as building frameworks, furniture production, decorative structures and mechanical equipment components.  Its versatile performance can perfectly satisfy the demands of different application scenarios.

    Galvanized pipes also feature excellent workability and versatility. They can be easily cut, threaded, welded and assembled using ordinary tools, and have good plasticity for bending and shaping. Suitable for a wide range of applications including water supply, gas distribution, scaffolding, fencing, fire sprinklers and structural supports, they are non-combustible, making them perfect for fire protection systems, and can tolerate temperatures up to 150°C, fitting for hot water systems.

    BLACK PIPE (5)BLACK PIPE (2)

    APPLICATION

    Black steel pipes are commonly used for gas lines, water supply, and fire sprinklers. Proper inspection ensures safety and longevity.

    wechat_2025-06-19_154532_477wechat_2025-06-19_154706_674wechat_2025-06-19_154827_441Application (5)

    Packing &Shipping

     Packaging material selection
    Choosing appropriate packaging materials is also crucial. Packaging materials should be selected with good shock-absorbing properties, moisture-proof properties, and impact and shear resistance. Commonly used packaging materials include plastic packaging film, foam board, thick cardboard and cartons. Choosing shock-absorbing foam boards as packaging materials for steel pipes can alleviate the force of collision of steel pipes during transportation and prevent deformation or damage of steel pipes.

    Package
    1

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