Submerged arc welding straight seam steel pipe used for the submerged arc welding process technology, using filler welding, submerged arc flux particle protection. Production caliber can reach 1500mm, LSAW steel pipes are straight seam submerged arc abbreviation, submerged arc welding straight seam steel pipe production process has JCOE molding technology, roll formed SAW technology. When larger diameter may be rolled with two plates, which will form a double seam phenomenon. Can perform low-pressure fluid pipe production standard GB/T3091-2008 standard, GB/T9711.1-2 -1997 oil and gas pipe production using standard, you can also perform the U.S. implementation of the standard API 5L line pipe. Production Material: Q195A-Q345E; 245R; Q345QA-D; L245-L485; X42-X70. Confined main parameters 2ST / T, S is the yield strength, T is the wall thickness. Submerged arc welding has become now, a double wire submerged arc welding, as well as multi-wire submerged arc welding, to further improve efficiency.