Where is the reputation of seamless steel pipes and steel pipes better?

Jiangyin Yangtze River seamless steel pipe factory.

Seamless steel pipesThe better ones are the Sichuan construction brand and the Tengfei Group brandJiumubrand, southern brand, Lishui brand.

1. Tengfei Group brand.

The company has advanced production equipment and mature production technology such as large-scale cold drawing machine, roller hearth heat treatment furnace, large-scale perforating machine, finishing mill, etc. Equipped with a powerful performance test.

Process performance testing, eddy current testing, ultrasonic testing.

A complete set of testing methods such as hydraulic testing, metallographic testing, high-precision carbon and sulfur analysis, as well as a number of high-quality process technologies.

personnel and quality inspectors.

2. Jomu brand.

The company has introduced advanced equipment and production technology from Germany, and has a group of skilled production personnel and high-quality management personnel. On the basis of advanced equipment, mature technology and strong technical force, we have established a complete testing equipment and quality assurance system.

The product quality has been tested by the national authoritative testing agency and underwritten by the Chinese People's Insurance Company.

3. Southern brand.

Jiangyin Southern Stainless Steel Pipe, founded in August 1984, currently has assets of 50 million yuan, covering an area of 10,000 square meters. In 1992, it passed the production license of the Ministry of Metallurgy.

Approved, in 1997 and 2003, 2004 through the Ministry of Metallurgy of the State Ministry of Metallurgy production license review and review.

4. Lishui brand.

Zhejiang Lishui Copper Industry **** (formerly Yuhuan County.

Southeast Valve) was built in 1992. The company is located in Baiyan, Chengguan, Zhugang Town, Yuhuan County, with more than 400 employees, including more than 80 management personnel and technicians. The company is a company engaged in medium and high-grade copper valves, sanitary ware, plumbing pipes, PP-R pipe fittings.

5. Chuanjian brand.

Due to overcoming the key technical problems and improving the pouring process, the product is formed at one time, which avoids the adverse effects of machining on the strength of the pipe fittings. The products have been identified by the Sichuan Provincial Department of Science and Technology, from the Science and Technology Committee of the China Water Association, the China Foundry Association, the China FAW Group, and Tsinghua University.

and other domestic first-class famous experts appraisal and evaluation.

Seamless steel pipe enterprise recommendation: Ansteel Anshan Iron and Steel, Xinyegang, Lida Lida, Youfa Steel Pipe, Baotou Steel.

1. ansteel.

Anshan Iron and Steel Co., Ltd. and Pangang Iron and Steel Co., Ltd. were jointly reorganized into Anshan Iron and Steel Group Company in May 2010. Anshan Iron and Steel Co., Ltd. is the first large-scale iron and steel complex to resume construction and the earliest steel production base in New China, and is known as "the cradle of China's iron and steel industry" and "the eldest son of the iron and steel industry of the Republic". Pangang is an important base and the largest third-tier enterprise in China for the comprehensive utilization of vanadium and titanium resources, national defense and military supporting services.

2. Xinyegang.

Hubei Xinye Steel, founded in 1948, is a well-known production base of medium and thick-walled seamless steel pipes, mainly producing bearing steel, gear steel, tool steel, mooring chain steel, high-pressure boiler tubes, special seamless steel pipes and heat-resistant alloys and other products.

3. Lida Lida.

Lida has 11 high-frequency welded pipe production lines (8 slitting lines, 10 hot-dip galvanized steel pipe production lines, 6 steel-plastic composite pipe production lines) ( It has formed an annual output of nearly 1 million tons of high-frequency welded steel pipes, nearly 400,000 tons of hot-dip galvanized steel pipes, and 30,000 tons of steel-plastic composite steel pipes.

4. Youfa steel pipe.

It is a large-scale enterprise group integrating the production and sales of longitudinal welded pipes, hot-dip galvanized steel pipes, rectangular steel pipes, plastic-coated composite steel pipes, spiral welded pipes and other products in China. The innovative achievements such as "steel pipe automatic baler", "multi-push and pull rod steel pipe galvanizing device" and "heat pipe waste heat evaporator" developed by Youfa have been widely used in the same industry and have played a positive role in promoting the quality and efficiency of the steel pipe industry.

5. Baotou Steel. Baotou Iron & Steel has two listed companies, "Baotou Iron and Steel Co., Ltd." and "Baotou Iron and Steel Rare Earth", which is one of the main rail production bases in China.

1. One of the seamless steel pipe production bases with complete varieties and specifications.

1. The largest plate production base in Northwest China is the origin of China's rare earth industry and the largest rare earth scientific research and production base.

Zhejiang Zhongwu Steel Pipe Manufacturing Co., Ltd. is a production-oriented enterprise focusing on the production of seamless stainless steel pipes, with a registered capital of 108.89 million yuan and a plant covering an area of 40,000 square meters. After nearly years of teamwork and hard work, the company has obtained ISO quality management system certification, special equipment (pressure pipeline) manufacturing license of the People's Republic of China, EU PED certification, Russian steel certification and other qualifications.

The company specializes in the production of austenitic stainless steel TP304, 304L, 321, 316, 316, 316, 310S and 31803, 904L and other duplex steel and super austenitic stainless steel, the products are widely used in aviation, petrochemical, nuclear, pharmaceutical, shipbuilding and other industries, and are exported to the United States, Russia, India, South Korea, Japan, as well as Europe and Southeast Asian countries, which can fully meet the testing requirements of customers in different places.

1. Jiangsu Zhongxin green seamless steel pipe manufacturer: Jiangsu Zhongxin green seamless steel pipe manufacturer is located in Yuanjing, the capital of Jiangsu Province, the ancient capital of the Six Dynasties, and Jiangning Hushu Industrial Concentration Zone.

2. Tianjin Zhongtonglian seamless steel pipe manufacturer: Tianjin Zhongtonglian seamless steel pipe manufacturer is a large metal manufacturer specializing in stainless steel materials, carbon steel, color steel and non-ferrous metals in North China and Beijing and Tianjin.

3. Shandong Liaocheng Jiuyang seamless steel pipe manufacturer: Shandong Liaocheng Jiuyang seamless steel pipe manufacturer is located in Liaocheng, Shandong, the world's largest steel pipe base, and is a professional seamless steel pipe manufacturer in China.

What is the use of producing seamless steel pipes?

1. The seamless steel pipe for general purpose is rolled by ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, with the largest output, and is mainly used as a pipeline or structural part for transporting fluid.

2. Seamless pipes for special purposes include seamless pipes for boilers, seamless pipes for chemical power, seamless steel pipes for geology and seamless pipes for petroleum. Compared with solid steel such as round bar, steel pipe has the same bending and torsional strength, and is lighter in weight, which is an economical cross-section steel.

iKang Enterprise Group (Shanghai)****. Poly has nearly 3,000 kinds of products, covering water supply, drainage, HVAC, ground source heat pumps, same-layer drainage, siphon rainwater, municipal engineering, HVAC system integration and other fields. Poly series products include PP-R, PP-R steady-state tube, PP-R copper pipe, PP-R antibacterial pipe, PE-RT heating pipe, PE-XB heating pipe, oxygen barrier pipe, and XPAP.

Causes:Due to surface defects or internal defects in the tube blank.

In the production process, such as the design of rolling process parameters is incorrect, the surface of the die is not smooth, the lubrication conditions are not good, and the hole design and adjustment are unreasonable.

In the process of heating rolling, heat treatment and straightening, if the residual stress of the tube blank (steel pipe) is too large due to improper control of heating temperature, uneven deformation, unreasonable heating and cooling rate or too large amount of straightening deformation, then it may also lead to surface cracks of the steel pipe.

The seamless steel pipe manufacturer is Shandong Hongju Tiancheng steel pipe, the company is a seamless steel pipe enterprise integrating manufacturing, sales and logistics. The products are used in various industrial fields such as engineering, coal mining, textile, electric power, boiler, machinery, military industry, etc.

Perennial sales of seamless steel pipes, stainless steel pipes, stainless steel plates, stainless steel bars, stainless steel rectangular pipes, plates, fluid tubes, high, medium and low pressure boiler tubes, petroleum cracking pipes, fertilizer pipes, marine pipes and domestic imported alloy pipes with a specification range of 4mm-1220mm 1mm-120mm.

The company is strong:

The company not only produces its own seamless steel pipes, but also establishes long-term business contacts with Chengdu Iron and Steel Group, Hubei Xinyegang Group, Baotou Seamless Steel Pipe Factory, Tianjin Seamless Steel Pipe Group, Guangzhou Lianzhong, Great Wall Special Steel, Huaxin Lihua, Jiuli Special Steel, Wenzhou Baofeng, Shanxi Taigang and Shanghai Baosteel.

The company has six seamless steel pipe perforation unit production lines, nine cold drawing production lines, eight hot rolling production lines and four hot expansion production units, the company can currently produce seamless steel pipes with an outer diameter of 10mm-426mm and a wall thickness of 1mm-80mm, and various non-standard steel pipes with a thermal expansion diameter of 219mm-1020mm and a wall thickness of 6mm-60mm according to customer requirements.

The above content reference: the company's official website - Shandong Hongju Tiancheng steel pipe **** introduction.

Seamless steel pipe manufacturers1. Shenzhen Xunke Standard Technical Service **** Sales Department.

Main Products: Hazardous Substance Testing, Safety Testing, EMC Testing, Environmental Safety Testing, Reliability and Failure Analysis of Electronic and Electrical Products, Material Reliability and Failure Analysis.

2. Shanghai Zhenmao Exhibition ****.

Main Products: Shanghai Hardware Exhibition, China Hardware Exhibition, Shanghai Construction Expo, Wuhan Food Ingredients Exhibition, China Food Ingredients Exhibition.

3. Cangzhou Pengyue sports equipment manufacturing ****.

Main products: 400m obstacle equipment.

4. Sichuan Mingteng New Materials.

Main products: heat shrinkable sleeves, heat shrinkable tapes, heat shrinkable materials.

5. Shanghai Winya Industrial Development ****.

Main products: European standard H-beam, European standard I-beam, European standard channel steel, British standard H-beam, British standard channel steel, T-beam, hot-rolled T-beam, split T-beam.