CDW Tube

Liwan Precision manufactures Cold Drawn Welded (CDW) tubes through advanced cold drawing processing of ERW steel tubes, delivering enhanced dimensional accuracy, surface finish, and mechanical performance comparable to seamless steel tubes.

Contact Us

Product Display

Standards

  • GB/T31315 < Direct-seam welded steel tube >
  • GB/T3639 < cold-rolled and cold drawn precision seamless steel tubes >
  • ASTM-A513 < ERW carbon steel and alloy steel mechanical tubes >
  • ASTM-A519 < standard specification for seamless carbon and alloy steel machanical tubing >
  • EN10305-2 < welded cold drawn tubes >
  • EN10305-6 < welded cold drawn tubes for hydraulic and pneumatic power system >
  • JIS-G3445 < Carbon steel tubes for machine structural purpose >
Capacity
01

Capacity

Liwan Precision operates an integrated manufacturing system with annual capacities of approximately 130 million machined components, 128,000 tons of cold-drawn precision steel tubes, 170,000 tons of welded precision steel tubes, and 60,000 tons of precision seamless steel tubes.

LEARN MORE
Main Production Equipment
02

Main Production Equipment

Liwan Precision is equipped with a comprehensive manufacturing system featuring advanced ERW tube mills, multi-line cold drawing machines, and cold rolling units, complemented by continuous heat treatment lines and high-precision machining equipment, enabling integrated production from raw materials to finished tubular components.

LEARN MORE
Laboratory Capabilities
03

Laboratory Capabilities

Liwan Precision operates a standardized laboratory equipped with advanced testing systems for mechanical properties, metallographic analysis, dimensional inspection, and surface quality evaluation, ensuring stable and consistent product quality from raw materials to finished products.

LEARN MORE
Applications
04

Applications

Liwan Precision provides high-precision and highly reliable precision tubing and component solutions for high-end manufacturing industries, including automotive, construction machinery, motorcycles, high-speed rail, and robotics.

LEARN MORE
Sales Network
05

Sales Network

Liwan Precision has established a comprehensive sales and service network across China while continuously expanding its global presence to provide reliable products and responsive support for customers worldwide.

LEARN MORE

More Products

ERW tube

Seamless tube

Processed parts