As there are numerous types of steel pipe, the pipe damage will inevitably occur during loading and unloading, for these cases, are summarized as follows series of ssaw steel pipe related issues.

High-precision cold drawn seamless carbon steel pipe abroad is generally increased in the metal alloy approach to improve material performance in the cold drawn seamless steel pipe, after all need to stress annealing, to eliminate residual stress of materials, to improve the organization of materials,improve the plastic material, thus preventing the purpose of seamless steel pipe fracture failure occurs.

Frequency welded pipe production process, affecting the quality of the pipe element has multiple aspects, mainly for raw materials, welding technology and roll operator which is beginning to adjust. Key to look at the raw geometric dimensions.

Metallographic Metallographic method (or etching method) is polished bead cross-section, showing the inside and outside weld bead after welding performed partial measurement method, as shown in FIG.

Thick-walled spiral pipe wall thickness of steel pipe means with respect to ordinary spiral steel pipe spiral pipe slightly thicker. With respect to the advantages of ordinary spiral pipe wall thickness are: high strength, high impact strength, high safety performance, longer life

Tube and clamp scaffold (commonly called tube and coupler scaffold) is a versatile type of scaffold consisting of steel tubes and clamps. Vertical tubes are connected to horizontal tubes via right angle clamps. Diagonal tubes are periodically connected to the scaffold via swivel clamps in order to stabilize the scaffold.

Spiral Pipe is a strip coil for raw materials, often warm extrusion, with automatic double-sided submerged arc welding process wire spiral welded pipe joints. Spiral steel pipe into the steel unit, the multi-channel roll rolling, gradually rolled steel, formed with an opening gap of a circular tube, adjust the amount of reduction squeeze rollers, the weld gap control 1 ~ 3mm, and weld ends flush.

Focusing on the process of the major industrial countries of the world's welded steel pipe consumption and development , they have experienced a variety of structural adjustment process. When the technology level of welded steel pipe production increase, the cost will decrease, and the industry will develop.

Ultrasonic inspection of seamless pipes principle

Spiral steel pipe weld gap as too large, then reductions constitute vicinity effect, eddy current lack of heat, poor weld crystal indirect co-occurrence of incomplete fusion or cracking; if the gap is too small, the effect is increased near constitute, excessive heat welding to form welding seam burning;

Tubing is important to oil drilling equipment, and its main equipment includes drill, core pipe and casing, drill collars and drilling small diameter steel pipe and so on. Mainly used for oil well drilling and completion during drilling after wall support, in order to ensure the conduct and completion of the drilling process of the wells after the regular oil casing normal operation.

After cold expansion for lsaw steel pipe, steel tube and pipe end diameter will increase by about one percent difference in diameter of the diameter, roundness, and the pipe ends are greatly improved, also have greatly improved the straightness of the steel pipe, steel pipea length of about 0.5% reduction in wall thickness decreases by about 0.8%.