Tianjin Tianyingtai Steel Pipe Co., Ltd. is one of the most credible manufacturers and suppliers of black round steel tube in China. Welcome to consult the quotation and import cheap black round steel tube made in China here from our factory.
Black round steel tube Description
| Mild black steel tube | |||||||
| Grade | Outer Diameter | Diameter Tolerance | Wall Thickness | Thickness Tolerance | Length | Length Tolerance | |
| Q195 Q235 Q345 | inch | mm | mm | mm | mm | m | mm |
|
1/2 |
20 | +/-0.5 | 0.6-3.0 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 3/4 | 25 | +/-0.5 | 0.6-3.25 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 25.4 | +/-0.5 | 0.6-3.5 | +/-0.1mm | 3.0-12.0 | -0, +20 | ||
| 1 | 32 | +/-0.5 | 0.7-3.75 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 38 | +/-0.5 | 0.7-3.75 | +/-0.1mm | 3.0-12.0 | -0, +20 | ||
| 1-1/4 | 40 | +/-0.5 | 0.7-3.75 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 42 | +/-0.5 | 0.7-3.75 | +/-0.1mm | 3.0-12.0 | -0, +20 | ||
| 1-1/2 | 47 | +/-0.5 | 1-4.0 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 48 | +/-0.5 | 1-4.0 | +/-0.1mm | 3.0-12.0 | -0, +20 | ||
| 2 | 59 | +/-0.5 | 1-8.0 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 60.3 | +/-0.5 | 1-8.0 | +/-0.1mm | 3.0-12.0 | -0, +20 | ||
| 2-1/2 | 75 | +/-0.5 | 1-11.5 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 3 | 87 | +/-0.5 | 1-12 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
| 4 |
113 |
+/-0.5 | 1-12.75 | +/-0.1mm | 3.0-12.0 | -0, +20 | |
Product Show




Material :
1.Tianyingtai is committed to long-term development, creating high-quality products and services, with the same pursuit of quality and service, stable, strong, long-term cooperation raw material suppliers, such as Haigang, Yurunde, etc., to maximize the consistency and stability of materials, product appearance and internal quality;
2.Raw materials grade : Q195, 235, 235B and Q345...
3.If requested, the zinc coating can customized up to 280 grams.
4.The purity of zinc wire is 99.99% zinc content with high purity.to remain the pipe welded seam antirust.
5.In the passivation process, we have own invention patents - galvanized pipe passivation liquid automatic spraying system to ensure even adhesion, high passivation efficiency, beautiful appearance.
6.In November 2014, it was recognized as Tianjin Famous Trademark by Tianjin Market and Quality Supervision Committee. The steel pipe produced and sold by the company was rated as Tianjin Famous Brand Product by Tianjin Municipal Government and keep for many years.
Production Processes


Tianjin TianYingTai(TYT) Steel Pipe Co., Ltd is located in Jinghai, Tianjin, which is professionally engaged in steel production sales, steel processing, greenhouse engineering with accessories and export business. It has been experienced for 15 years so far. We have 13 production lines for various kinds of steel pipe, 10 processing production lines and 2 environmental production hot-dipped galvanizing lines. We not only can produce 450,000 tons of various sizes of ERW steel pipe, but also can produce deep processing pipe with 100,000 tons. Our annual production capacity of hot dipped galvanized steel pipe is 200,000 tons, capacity of greenhouse engineering material is 250,000 tons and highway column and guardrail is 200,000 tons.

Tianjin TianYingTai Imports & Exports Trade Co., LTD is our export company. We have achieved trading capacity 60,000 tons in 2016. Our products are widely used in agriculture, animal husbandry , chemical industry, machinery, construction, utilities, vehicle and other fields. Our customers are from Asia, the Middle East, the Southeast Asia, European Union and other countries.


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