LSAW Pipe
Double Submerged Arc Welded (DSAW) pipes for reliable and strong construction.
Structural engineering demands materials with superior strength, stability, and durability.
We offer a comprehensive range of premium structural products to meet your diverse application needs. Find the ideal material for your project in our various product groups.
Steel construction requires the highest quality standards at both low and high temperatures. Many of our products are used primarily in the construction of bridges, buildings, stadiums, cranes and offshore platforms. The wide range of quality products from our company covers a variety of your applications. Find the material you need for your purpose in our various product groups.
All structural tubes undergo strict mechanical and impact testing to guarantee long-term structural safety under alternating temperature and heavy static/dynamic loads. We provide hot rolled large-diameter heavy wall tubes for main load-bearing frames and cold drawn precision thin-wall tubes for secondary support structures, covering all construction load and climate working conditions worldwide.
| Standard System | Standard Code | Main Application Scope |
|---|---|---|
| Chinese GB Standard | GB/T 8162 | Domestic building frame, bridge support, crane structural pipe |
| US ASTM Standard | ASTM A106 Gr.B, ASTM A500 | Overseas building, municipal infrastructure structural tubing |
| European EN Standard | EN 10210, EN 10216 | European construction, stadium and crane frame projects |
| Cold Drawn Precision Standard | GB/T 3639, EN 10305 | Thin wall secondary support, decorative steel frame |
| Steel Grade | Material Feature | Typical Construction Usage |
|---|---|---|
| 20# / A106 Gr.B | Mild carbon steel, good weldability | General building secondary support, indoor frame structure |
| 16Mn / Q345 | Low alloy high strength, low temperature impact resistance | Bridges, tower cranes, offshore platform frames, cold region buildings |
| ST52 / E355 | High yield strength, excellent bending performance | Mobile crane chassis, stadium curved load-bearing beams |
| 45# Medium Carbon | High hardness after heat treatment | Crane shaft sleeves, heavy load connecting structural parts |
Q345 / 16Mn low alloy steel is the preferred material for outdoor, low-temperature and heavy-load infrastructure due to outstanding toughness and weather resistance.
| Mark | Treatment State | Construction Scenario |
|---|---|---|
| BKW | Stress Relieved | General bent steel frame components |
| NBK | Normalized | Bridges, offshore pipes requiring low temperature impact resistance |
| GBK | Fully Annealed | Complex curved stadium steel beam processing |
Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.
