SQUARE AND RECTANGULAR HWS ENTERPRISE
ENTERS INTO CHINA TOP 500
MANUFACTURING ENTERPRISE

about us

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.

Learn More >>
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.

news

EXCEED EXCELLENT INNOVATION

Integrity

Rely on faith and trust to be achievement, make friends and be on the way all the time.

Innovation

Be low key but ambitious, look forward to the Era of Smart Production with intelligence, information and precision

Development

Create a century brand by the way of forging ahead and pursuing excellence

Dedication

Realize our vision and task, be valuable and feedback.

Is stainless steel harder or stronger than normal steel?-news-TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD-
news

Home >> news

Is stainless steel harder or stronger than normal steel?
Is stainless steel harder or stronger than normal steel?

1. Which is stronger, carbon steel or stainless steel?

Carbon steel and stainless steel share the same basic iron and carbon composition. The alloy content is the primary distinction between them. Carbon steel alloy content is less than 10.5%, whereas stainless steel chromium content must be greater than or equal to 10.5%. This fundamental distinction is what gives carbon steel and stainless steel their distinct physical properties. Carbon steel and stainless steel are distinct, but neither is stronger. Everything revolves around the usage environment. Every material has benefits and drawbacks, and the key is to match the steel to the application.

Carbon steel: rusty, brittle, wear-resistant, and used to strengthen fixed structural parts.

Stainless steel is rust-resistant, less brittle, and has lower wear resistance. Regular activities require more robust equipment.

Steel can be found in a wide range of products, from aerospace to kitchenware. This varied application necessitates the use of a versatile material, and steel fits the bill. "Steel" actually refers to an entire family of metal alloys, with hundreds of grades for specific applications, but most people understand that steel is divided into two broad categories: carbon steel and stainless steel.

carbon steel.jpg

2. What are the benefits and drawbacks of carbon steel versus stainless steel?

(1) Carbon steel's benefits and drawbacks

Advantages: 1. Low cost and ease of smelting; 2. Advanced processing technology; and 3. Improved performance (C%, heat treatment).

Disadvantages: 1. Low hardenability; 2. Low strength level; 3. Poor tempering stability and heat resistance; 4. Carbon steel becomes brittle below the ductile-brittle transition temperature because it is not resistant to low temperatures. 5. Carbon steel is not corrosion-resistant and cannot withstand atmospheric, acidic, or alkaline salt corrosion. 6. Low magnetic permeability, carbon steel has a low magnetic permeability. 7. In a magnetic field, nonmagnetic carbon steel will inevitably be magnetized. (2) Stainless steel's benefits and drawbacks

Stainless steel has several advantages, including corrosion resistance or relatively high-temperature resistance, general acid resistance, and high-temperature stainless steel with heat resistance and high-temperature oxidation resistance (heat resistance and no skin).

The disadvantages of stainless steel are primarily its high cost and high cost; additionally, stainless steel is not resistant to corrosion by alkaline media.