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LSAW steel pipe

Pipe info chat for LSAW steel pipe

LSAW (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

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

Major characteristics

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 very large diameter with thick wall or in very small diameter with thick wall.
The company has six production lines now. 
The product is spiral double-faced submerged-arc welded pipes(SSAW/HSAW/DSAW).
Now the diameter of our product is from 219mm to 2420mm and wall thickness is from 5mm to 30mm.
Our product comply with the standard of SY/ T5037-2000, GB/ T9711.1-1997 and API 5L,
the material can be Q235A, B, Q345(16Manganese) and X42-X70 grade plate. 
The products are widely used in the long-distance transmitting pipelines of natural gas, petroleum, 
chemical industry, power, heat power water source and industry structure etc

Our product spiral steel pipe is strictly tested in all process from contract signing, raw material purchasing, producing, and inspection and after sale service,  and we passed through ISO9001 Quality System Certification in 2003,  assed the API 5L Qualification of American Petroleum Institute in 2008. Our goods pass the third party inspection
such as LIOYDS, SGS, BV etc. Our Spiral pipe has export to so many countries such as USA, Algeria, Angola, Canada,
Iran, UAE, South Africa, Korea, Indonesia etc. We ensure to supply good product and service for all our customer.




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