LSAW steel pipe (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material, the steel plate in the mold or molding machine pressure (volume) into using double-sided submerged arc welding and flaring from production.

Specification:

• Pipe O.D: Ф406.4-Ф1422.4mm（16-56in）
  

• Pipe Length: Max.12.2m(40ft)
  

• Wall Thickness: When the steel grade is X70, the wall thickness ranges from 6.4 to 26.4mm(0.252--1.04in);
  

When the steel grade is lower, the wall thickness will be increased accordingly

Product Standard:

•  ISO3183-3; 

• API Spec 5L;

• GB9711
  

Capacity: The annual output is 0.2million tons

Application of LSAW steel pipe

The LSAW steel pipes are mainly used as long-distance transportation pipelines for oil, gas, liquid coal, etc. And also can be applied as construction pipes on offshore platforms, power stations, petrochemistry and city construction, etc.  

Major characteristics of LSAW steel pipe:

① The LSAW steel pipe internal stress is very small and uniformly distributed after the full-length expansion. 

The corrosion and cracking of the pipe owing to stress can be effectively prevented. 

The application of welding on site is very easy because of the high-dimension precision

② The inside and outside welding are performed after the tack welding,  so the welding process is very stable with good weld quality; 

③ The NDT is easy to perform on the weld during production and field operation as well;

④ The length of the weld is shorter than that of the non-longitudinal seam pipe,  so the probability of defects occurrence is very low;

⑤ The coverage of the pipe specification is very wide. 

The pipe can be either in a very large diameter with a thick wall or in a very small diameter with a thick wall.

Cangzhou Shenlong Pipe Manufacturing Co., Ltd. cooperates with Baosteel and Baogang to produce large-caliber seamless steel pipe, straight-seam welded pipe, spiral steel pipe, and pipe fittings. The products comply with API, ASTM, DIN, BS, and JIS standards, and can accept SGS, BV, and other inspections. The products are used in oil, natural gas, bridge, water conservancy, and other large-scale projects, which are worthy of trust.