Helical welded pipes is the low-carbon structural steel or low alloy steel strip by the helix angle (called molding angle) rolled into a tube, and then the tube made of seam welded together, it can be used as a narrow band steel production of large-diameter steel pipe. Helical welded pipes for oil pipeline and gas pipeline specifications diameter * wall thickness.

Helical welded pipes side welding and double-sided welding, the pipe should ensure that hydrostatic test, weld tensile strength, and cold performance meet the requirements.

The process of helical welded pipes is as follows:

Open book - on volume - leveling - butt welding - Milling - molding - welding - Weld - cut pipe - break - the follow-up welding - hydrostatic test

Uses of helical welded pipes:

Helical welded pipes are mainly used in water engineering, the petrochemical industry, the chemical industry, the power industry, agricultural irrigation, and urban construction in the country. For the transport of liquids: water supply, drainage. For gas transportation: gas, steam, liquefied petroleum gas. For structural purposes: aspiring pipe for bridges; docks, roads, and building structure pipe.

Cangzhou Shenlong Pipe Manufacturing Co., Ltd. is a high-tech enterprise specializing in the manufacture and sales of straight-seam welded pipe and spiral steel pipe. The main products of the company are oil and gas bushing, tubing, pipeline pipe, pile pipe, structural pipe, etc., with an annual design capacity of 100,000 tons. The company's products execute API SPEC 5CT, API SPEC 5L, FM 1630, UL 852, JIS G3444, JIS G3452, ASTM A53/A53M, AS/NZS 1163, AS/NZS 1074, AS/NZS 1396, EN10217, EN10219, EN10255, and GB/T9711, GB/T3091, and other domestic and foreign standards. Products are exported to overseas markets and are widely used in petroleum, natural gas, solar energy, shipbuilding, automobile, chemical, environmental protection, boiler, fire protection, water conservancy, electrical industry, machinery and equipment, steel structure, construction, and other industries.