8" Spiral Submerged Arc Welded Pipe

Low Pressure Liquid Transportation EN10217 EN10219 API 5L SSaw 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.Process: Spiral Submerged- Arc Welded Steel Pipe Usage: Used for low pressure liquid transportation, such as water, gas, and oil; construction and piling Standard: API 5L, ASTM A252, EN10217-1,2,5, EN10219-1, BS, JIS, IS Certificate: EN10217, EN10219, API 5L PSL1/ PSL2, Out Diameter: 219.1MM – 3048MM (8"-120") Wall Thickness: 6MM - 25MM Length: Top to 15 M Steel Grade: API 5L: GR A, GR B, X42, X46, X56, X60, X65, X70 ASTM A252: GR 1, GR 2, GR 3 BS 4360: Grade 43, Grade 50 EN: S275JR, S275J0H, S275J2H, S355JRH,  S355J0H, S355J2H Surface: Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating,The processed spiral steel pipe has greater flexibility in the size and specification range of diameter and wall thickness, especially in the production of high-steel grade thick wall pipe, especially in small and medium-sized thick wall pipe has incomparable advantages, which can meet the user's more requirements in the specification of spiral steel pipe.Adopting the advanced double-sided submerged arc welding technology, the welding can be realized in the optimal position, and it is not easy to have the defects such as wrong side, deviation and incomplete welding, etc., and easy to control the welding quality.Spiral steel pipe is mainly used in tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction, is one of the 20 key products developed in China.For liquid transport: water supply, drainage. For gas transmission: gas, steam, liquefied petroleum gas. For structural use: as pile driving pipe, as bridge; Pipes for wharves, roads, building structures, etc.Our manufacturing is ISO 9001:2008 certified, and our pipes meet API, CE, TUV, ASTM, JIS, EN, DIN, ANSI Standards.