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Tianjin Yuantai Derun Pipe Manufacturing Group Co., Ltd., established in March 2002, is the biggest manufacturer specializing in  ERW square&rectangular tube/pipe, hollow section structure pipe, galvanized pipe and spiral welding pipe in China. Annual output reaches 5 million tons.Yuantai Derun has 59 production lines of black ERW pipe, 10 production lines of galvanized pipe and 3 production lines of spiral welding pipe. Square pipe from 20*20*1mm to 500*500*40mm, rectangular pipe from 20*30*1.2mm to 400*600*40mm,  welded pipe from 2”—60” can be manufactured. Yuantai Derun can manufacture square rectangular pipes as per the standards of ASTM A500, JIS G3466, EN10219, DIN2240, BS1387, AS1163.

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January 1993

Key team members of Yuantai Derun group began technical job in Tianjin Daqiuzhuang tube factory.

June 2002

Tianjin Yuantai Industry & Trade Co., Ltd. was founded, specialize in square, rectangular hollow steel pipe, hot galvanized welded (hot dip galvanized) square tube, the registered capital is USD 10 million.

May 2004

One of Yuantai subsidiaries Tangshan Lituo Steel Tube Co., Ltd. was established, specialize in square rectangular straight welded hollow steel pipe, registered capital is USD 10 million.

April 2005

Yuantai Steel Square Pipe Co. Ltd. was established, specialize in square welding hollow steel tube and galvanized tube, the registered is USD 2 million.

March 2010

Tianjin Yuantai Runxiang commercial trade company was established, specialize in strip steel trade, galvanized pipe agent, etc., the registered capital is USD 2 million.

March 2010

Tianjin Yuantai Derun pipe manufacturing group Co. Ltd. was formally established, marking that the production of high-frequency welded black, galvanized square pipe, spiral welded pipe, pipe logistics and pipe trade as one of the large-scale joint enterprise Yuantai Derun group was formally established, the group registered capital is USD 20 million.

March 2010

Tianjin Yuantai Derun Investment Co., Ltd. was formally established, specialize in steel pipe industry chain,lower industry mergers and acquisitions and industrial real estate development, the registered capital is USD 2 million.

August 2013

Tianjin Derun Runfeng pipe manufacturing Co. Ltd was established, specialize in hot galvanized (hot galvanizing) processing business, the registered capital is USD 8 million.

March 2015

Tianjin Yuantai Yuanda anti-corrosion insulation pipe Co., Ltd. was established, specialize in spiral welded pipe production and sales, the registered capital is USD 2 million.

August 2015

Tangshan Yuantai Derun Pipe Co., Ltd. was established, specialize in steel strip, steel pipe trade, registered capital is USD 1 million.

March 2016

Tianjin Yuantai Derun International Trade Co., Ltd was established,mainly engaged in international import and export business for Yuantai Group, registered capital is USD 2 million.

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What is the difference between galvanized seamless steel pipe and galvanized pipe?-news-TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD-
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What is the difference between galvanized seamless steel pipe and galvanized pipe?
What is the difference between galvanized seamless steel pipe and galvanized pipe?

Galvanized steel pipes can be called galvanized pipes. The main differences between galvanized seamless steel pipes and galvanized steel pipes are:


ASTM A123 galvanizing thickness2.jpg


1. Different uses

Galvanized seamless steel pipes are mainly used for general structures and mechanical structures. Ordinary galvanized steel pipes are welded pipes, which are generally used for transporting medium and low-pressure fluid materials such as water, gas, air, oil, heating hot water, or steam. for structural parts.

2. Different materials

Galvanized seamless steel pipe is made of seamless steel pipe by galvanizing, generally using high-quality carbon steel such as 10, 20, 30, 35, 45, or low-alloy structural steel such as 16Mn, 5MnV, or 40Cr, 30CrMnSi, 45Mn2 Made of hot-rolled or cold-rolled steel. Ordinary galvanized steel pipes are generally rolled into steel pipes and then welded to form, mostly ordinary carbon steel of Q195, Q215, and Q235.

3. Different physical properties

The tensile strength of galvanized seamless steel pipe is 410Mpa, and ordinary galvanized steel pipe is 195235Mpa. The pressure-bearing capacity and mechanical properties of seamless steel pipe are stronger than ordinary galvanized steel pipe; The seam is its weak link, and it may burst open in a relatively harsh environment.

4. The amount of galvanizing is different

In comparison, the galvanized amount of galvanized seamless steel pipe is less than that of galvanized steel pipe, about 10-50g/m2.