About Us

75

Locations worldwide

28

Years experience

1600

Employee

99%+

Customer Satisfaction Rate

Who we are

UNIASEN was founded in 1998. We quickly gained a reputation for their expertise in steel pipe solutions.

UNIASEN (Tianjin) Co., Ltd. manufactures and supplies carbon steel pipes for export. We make different types of steel pipes like seamless, ERW, spiral welded, and hollow section pipes. We provide machining and fittings that meet our customers’ project requirements.

UNIASEN has been supplying carbon steel pipes for over 20 years. We offer wholesale services to customers in 50+ countries. We have one of the largest inventories of carbon steel pipes in China.

Our experts will advise you on dimensions, tolerances, specifications, quantities, and more. Help you complete engineering projects faster and better.

Production Capacity & Delivery Lead Time

The production capacity of steel pipes reaches 6 million tons and the production capacity of pipe fittings is 1 million pieces:

SMLS

4 production lines, production capacity 1.8 million tons, delivery time 20-40 days

ERW

4 production lines, production capacity 1.5 million tons, delivery time 20-30 days

SSAW

6 production lines, production capacity 1.8 million tons, delivery time 20-30 days

LSAW

2 production lines, production capacity of 900,000 tons, delivery time of 20-40 days

Pipe fittings

20 production lines, production capacity of 1 million pieces, delivery time of 20-40 days

what is spiral welded pipe-China spiral welded pipe manufacturer and factory-UNIASEN

CHINA’S BEST SOURCE OF RAW MATERIALS

Our raw materials come from the top 10 steel mills in China, such as HBIS, BaoSteel, AnBen Steel, ShouGang, etc.

China carbon steel pipe raw material supplier-HEBEI IRON AND STEEL

HEBEI IRON AND STEEL (HBIS), 40.2 million tonnes, up 20.7 percent. China’s biggest steel producer for the first time in 2009, with output second only to ArcelorMittal among its global peers, is in talks to buy Shijiazhuang Steel, also based in Hebei province, as well as other potential targets.

China carbon steel pipe raw material supplier-BAOSTEEL GROUP

BAOSTEEL GROUP, 38.9 million tonnes, up 9.9 percent. China’s traditional market leader, based in Shanghai, has also been active in buying smaller mills like Bayi Iron and Steel and Guangdong Iron and Steel.

China carbon steel pipe raw material supplier-ANBEN IRON AND STEEL

ANBEN IRON AND STEEL, 29.3 million tonnes, up 25.2 percent. A company formed after state-owned giants Anshan Iron and Steel <0347.HK> (Angang) and Benxi Iron and Steel (Bengang) merged and based in northeastern Liaoning province.

China carbon steel pipe raw material supplier-SHOUGANG GROUP

SHOUGANG GROUP, 17.3 million tonnes, up 41.8 percent. Based in Beijing and established 90 years ago, has almost completed plans to move its production facilities out of the capital into neighbouring Hebei province. The company plans to raise total annual capacity to more than 30 million tonnes by 2012.

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History and achievements

1998

Established the first ERW production line in Tianjin with a capacity of 100,000 tons, mainly focusing on structural steel.

2002

Launched a new SSAW production line, increasing total capacity to 350,000 tons. Expanded product range to include pipes for piling construction.

2003

Introduced a new SMLS production line and expanded existing ERW and SSAW lines, boosting total capacity to 1.2 million tons. Improved product quality to meet pressure pipeline standards.

2005

Achieved ISO9001 management system certification and received API 5L and API 5CT product certifications, officially entering the oil and gas pipeline market.

2006

Added 2 new LSAW production lines, propelling the capacity to exceed 2.1 million tons.

2007

Obtained CE certification, marking the start of sales of UNIASEN’s high-quality steel pipes to European Union countries.

2008

Commissioned 2 new ERW lines and 4 new SSAW lines, expanding the production capacity to 4 million tons.

2009

Recognized as “China’s Top 10 Steel Pipe Enterprises” with a ranking of first in quality.

2012

Installed 2 additional SMLS lines, increasing the capacity to 5 million tons.

2015

Established multiple new Pipe Fitting and steel pipe production lines, raising the capacity to 6 million tons.

2016

The company’s laboratory received CNAS accreditation, becoming the only national-level steel pipe laboratory in the Tianjin area.

2018

Professional organizations certify firefighting pipelines and fitting products, acknowledging their quality in the firefighting field. These certifications are among the most rigorous in the industry.

2022

Invested in modernizing existing equipment, including follow-up saws, NDT non-destructive testing equipment, Turks heads, and container stuffing machines, significantly enhancing product precision and production efficiency.