Welded Straight Seam Steel Pipe Use Of The Method Of Introduction

Welding process of straight seam welded steel pipe: the selection of small standard model can avoid stress corrosion, thermal cracking and deformation, electric welding current is 20% lower than high carbon steel. In order to ensure that the electric lone ignition, the choice of DC reverse articulation. Short arc welding strategy should be slow to stop the lone, add charging lone pit, after welding and touching the surface layer of the material. In multi-layer high-level electric welding, the temperature of the virtual beam should be controlled, and forced water cooling can be used after welding. There is no need to arc outside the groove; wire joints should be properly connected. The deformation after welding can only be corrected based on cold drawing. Argon arc welding: used for straight seam steel pipe argon arc welding, because of the outstanding rationality, high temperature function of butt welding, outstanding physical function.

Aluminum alloy components are not easy to burn, high articulation index, good welding forming function, no slag shell, lubricated appearance. Now, the manual tungsten argon arc welding market is mainly used for argon arc welding machine on 0.5~3mm stainless steel plate welding. The composition of the electrode is generally the same as the welding part. Industrial production of pure argon is generally used to adhere to the vapor.

When welding, the faster the better, in order to avoid lateral wobble as much as possible. Argon arc welding can be used for stainless steel plate with a thickness of more than 3mm.The advantages of MIG arc welding are high output rate, small welding thermal danger zone, small welding deformation, good corrosion resistance, and easy to automate the actual operation of the technology.

LSAW pipes have no welds or joints and are made from solid round billets. LSA pipes are processed in accordance with scale and wall thickness specifications from 1/8 inch to 26 inches outside diameter. They are suitable for high-pressure applications such as oil and gas industry and refineries, oil and gas exploration and drilling, oil and gas transportation, cylinders and hydraulic cylinders, bearings, boilers, cars and so on.

LSAW pipe production technology "cpe" technology is the world famous technology for the production of LSAW pipes up to 7 inches OD "plug mill" technology for higher diameters. LSAW pipe production from 7 inches to 14 inches is a reliable technology for larger diameters. High frequency induction welding technology is used for ERW pipe up to 21 inches in diameter.

In short, LSA pipe is sold in the marketplace based on the outdated myth that LSA pipe is free of defects, yet, as noted above, welded steel pipe has inherent defects throughout the entire length of each pipe. Intuitively, this concept is easily borne by buyers and designers with limited experience with various products. Each product method and fabrication method has its own inherent problems and potential defects.