Welded steel pipe 

ADTO welded steel pipe is applied in low-pressure fluid delivery, also known as the general welded pipe, commonly known as the black tube. It is the welded steel pipe that used to transport of water, gas, air, oil and heating steam. The welded steel pipe can be generally divided into the following types.

1.  ERW steel pipe (ADTO02GCWD0008——ADTO02GCWD0043)is made of hot-rolled steel coil as tube blanks, spirally forming in normal temperature, welded by high-frequency lap welding, used for pressurized fluid transportation.

2. LSAW steel pipe (ADTO02PIWELS)

LSAW steel pipe is the pipe that the weld longitudinally parallel to the whole steel pipe. It is designed as a low-pressure liquid transportation pipe and different types of load bearing structure units as well as other purposes.

2. SSAW steel pipe (ADTO02PIWESS)

SSAW steel pipe is made of hot-rolled steel coil as tube blanks, spirally forming in normal temperature and welded by a double-sided submerged arc welding method. Its full name is Spiral Submerged Arc Steel Pipe. It is widely used to the transportation for various of liquid and powdery solid, such as petroleum, natural gas, chemical, heat supply, gas supply, bittern, ore pulp, coal powder, structural tube, engineering tube, the filling tube, etc. SSAW steel pipe, with the characteristics of strong bearing capacity and good welding performance, has been passed a variety of strict scientific inspection and test. It also has the advantages of big diameters, high transport efficiency, investment saving of pipeline laying.