Piling 6 Meter SSAW Steel Pipe Astm A252 Gr.3

Piling Pipe Astm A252 Gr.3 Steel Grade Standard Ssaw Steel Pipe

General low pressure fluid conveying, spiral seam submerged arc welded steel pipe SY5037-2000, using double-sided automatic submerged arc welding or single-side welding method for water, gas, air and steam and other general low pressure fluid conveying submerged arc welded steel pipe.Now the common standard of spiral steel pipe is generally divided into :SY/T5037-2008(Ministry standard, also known as the spiral seam submerged arc welded steel pipe for ordinary fluid transmission pipeline).

GB/T9711.1-2008(national standard, also known as the oil and gas industry delivery technical conditions of steel pipe Part I:A-class steel pipe (GB/T9711.2 B-class steel pipe), API-5L(American Petroleum Association, also known as pipeline steel pipe;It is divided into two grades: PSL1 and PSL2), SY/T5040-2008(spiral welded steel pipe for piles).Generally speaking, there are three kinds: Ministry standard SY /5037, national standard GB /9711 and American standard API-5L, which are generally used for export.

Different functions and testing standards are different. The testing process of spiral steel pipe is determined according to the customer needs of spiral steel pipe.SSAW Steel Pipe (Spiral steel tube) is a spiral welded steel tube made of strip steel coil as raw material, usually formed by warm extrusion, and welded by automatic double-wire double-side submerged arc welding process. The spiral steel tube feeds the strip into the welding tube unit, and after rolling with multiple rollers, the strip is gradually rolled up to form a round tube blank with open clearance. The pressure reduction of the extrusion roller is adjusted so that the weld clearance is controlled at 1~3mm and both ends of the welding joint are flush.Main technological features of spiral steel tube:In the forming process, the steel plate deformation uniformity, the residual stress is small, the surface does not produce scratches.