Longitudinal welded pipe is a versatile material for liquid or gas transportation or for structural purposes. It is widely used in water supply engineering, chemical industry, electric power industry, agricultural irrigation, urban construction, and other industries. Wanzhi Steel has both ERW and LSAW production lines with an annual output of 150,000 tons. Below are more specifications for your reference.
|Diameter||Φ114 mm- Φ660 mm||Φ300 mm – Φ1422 mm|
|Wall thickness||4-25 mm||8 mm-50 mm|
|Length||3 m-14 m or as per your requirements||3 m-14 m or as per your requirements|
|Materials||Q195, Q215A, Q235A, Q235B, alloy steel, stainless steel, etc.|
Longitudinal welded pipe is a kind of welded pipe, which with a straight welding seam. It made with hot rolled or cold rolled steel plate or steel strip coil and then be welded into pipes. In comparison, the strength of spiral welded pipe is generally higher than that of straight seam welded pipe. But the longitudinal welded pipe is cheaper in price because its production process is simpler and the welding seam is much shorter.
According to the different production processes, it is divided into longitudinal submerged arc welded pipe (LSAW) and high-frequency resistance welded pipe, also known as electric-resistance arc welded pipe (ERW). Wanzhi Steel has different equipment to manufacture different pipes in various specifications, materials and lengths to better meet your needs.
1. Simple production process
2. High production efficiency
3. High strength
4. Not easily deformed
5. Low cost
1. For liquid conveying: water supply and drainage piping.
2. For gas transportation: gas, steam, LPG pipeline.
3. To do structural use: piling pipe, bridge, road, building structure with pipe, etc.
4. Longitudinal welded pipes for automobiles: muffler, transmission shaft, thrust pipe, condenser, exhaust pipe and pipe for maneuvering shaft, shock absorber oil storage pipe, etc.
Below is its manufacturing process for your reference.
Raw material uncoiling → Flattening → End shearing and welding → Live sleeve → Formin → Welding → Inside and outside weld bead removal → Pre-calibration → Induction heat treatment → Sizing and straightening → Eddy current testing → Cutting off → Hydrostatic inspection → Pickling → Inspection (strict control) → Packing → Shipping.
1. The welding place should be flat, clean, and free of debris.
2. Check whether the welding equipment and tooling are in good condition.
3. Check the wear and tear of the conductive nozzle, oil, and dirt and clean and replace it in time.
Our workers take every production detail seriously to ensure you get the perfect longitudinal welded tube. In addition, we can provide custom cutting, welding, beveling, flaring, and coating services. If you have any other questions, you can contact us for more details.
Wanzhi Steel, as a top manufacturer of longitudinal welded tube, has 17 years of experience in the steel industry and 12 years of export experience. Our good service attitude and high quality products have made us famous in the industry. Next, take a look at what advantages the longitudinal welded tubes produced by Wanzhi Steel have compared to other manufacturers.
We use a mature cutting process to ensure that the cut surface of longitudinal welded tube is flat and burr-free. In addition, we use standard raw materials to ensure that you get the best quality longitudinal welded tube.
Wanzhi Steel’s factory is equipped with high-end processing and testing equipment. In addition to machine inspection, our staff will also conduct a manual inspection. We ensure that each batch of longitudinal welded tubes has accurate tolerances and you can buy with confidence.
Wanzhi Steel has a complete range of steel pipes, including carbon steel pipes, galvanized steel pipes, and stainless steel pipes. Not only that, but we also provide various specifications of steel pipe products to meet the needs of different customers.
Wanzhi Steel provides processing services such as cutting, punching, and surface treatment to meet the needs of large customers. Welcome to contact us for more details.
When storing longitudinal welded pipe, mastering the correct storage method can extend its service life. Here Wanzhi Steel will tell you how to store it properly.
When storing longitudinal welded tubes, it is best to use a common closed type of warehouse. The warehouse should be equipped with ventilation devices. Pay attention to ventilation on sunny days, and close the moisture-proof on rainy days, and often maintain a suitable storage environment.
When storing, remember not to put the welded longitudinal pipe and other steel together. Because storing longitudinal welded tubes and galvanized steel tubes or stainless steel tubes together will cause contact corrosion. In order to avoid confusion and prevent corrosion, each type of steel should be stored separately.
Whether stored indoors or outdoors, there should be no acid, alkali, salt, or cement, which are harmful to steel. Once longitudinal welded pipe and these corrosive substances contact will greatly reduce its service life.
Due to the high price fluctuation in the steel industry, the price of longitudinal welded tubes fluctuates daily. If you are planning to buy longitudinal welded tube, please feel free to contact us. Our business manager will quote you a price based on the specific specifications you need, shipping distance, and other factors.
Wanzhi Steel is an reliable longitudinal welded pipe supplier and manufacturer in China, which offers a variety of welded steel tubes in prime quality. We employ advanced steel pipe production equipment and quality test equipment to serve clients all over the world. Except for longitudinal welded pipes, we also have spiral welded pipes and seamless pipes to choose from. Also, we provides custom solutions, including the specifications, finishes, packaging, etc. according to your requirements. Welcome to contact us for more details!
Metal material industry exprience
Import and export experience
Countries / regions have global cooperation
Annual export volume