The cold drawn steel tube through processes such as heating the steel billets, piercing, rolling, and cooling. Compared with welded steel pipes, seamless steel pipes have obvious advantages in appearance and performance. Firstly, the surface of seamless steel pipes is smooth without weld seams, making them more aesthetically pleasing. Secondly, seamless steel pipes have high strength and good pressure resistance, capable of withstanding higher pressure and temperatures. This enables seamless steel pipes to be widely applied in some special fields, such as the petroleum, chemical, and natural gas industries.
The seamless steel pipe factory can be classified into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, etc. The main production processes are: pipe billet preparation and inspection → pipe billet heating → piercing → rolling → reheating of rough pipes → sizing (reduction) → heat treatment → straightening of finished pipes → finishing → inspection (non-destructive, physical, and on-site inspection) → storage.
Cold Drawn Steel Tube commonly used steel pipes are made of high-quality carbon structural steel 20, 30, 35, 45, 16Mn, 5MnV, etc. and combined steel 40Cr, 30CrMnSi, 45Mn2, 40MnB, etc., through hot rolling or cold rolling.
|
Material |
Purpose |
|
20 low carbon steel seamless pipes |
used for Gases, petroleum and chemical materials fluid transportation |
|
45, 40Cr and other medium carbon steel seamless pipes |
used to manufacture mechanical parts, such as automobile and tractor parts. |
Q: How is the quality of your products?
A: Our products are manufactured strictly in accordance with national and international standards. We test each piece of product before delivery. If you want to view our quality certifications and various test reports, please consult us.
Q: How long is your delivery time?
A: For inventory, we can send the goods to the loading port within 3-14 working days after receiving the deposit;
For production delivery cycle, it usually takes about 15-30 working days after receiving the deposit.
Q: How do you control the quality?
A: Factory test certifications are provided with the goods. Third-party inspections can also be provided. Moreover, we have obtained ISO, SGS, and Alibaba's verification.
Q: How do you package the products?
A: Standard export shipping packaging. The inner layer is waterproof paper, the outer layer is a bag, with iron packaging, and fixed with fumigated wooden pallets. It can effectively protect the products from corrosion and various climate changes during ocean transportation.
Q: Are you a manufacturer?
A: Yes, we are a manufacturer. We have our own factory located in Liaocheng, China.
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