The Key Technology of Hot Steel Tube

The product specification of hot steel tube is the important function of phi 20mm phi 610mm national economy construction.Make the new production of large diameter ERW welded pipe units of product quality has reached the international advanced level as soon as possible, the thermal expansion of steel pipe is the earliest production, the application range and the largest production units (2000) the highest yield (80%) of total output of welded pipe can steel varieties.In order to prevent the development of the ERW welding tube in our country from the experience of major quality accidents, the ERW welding tube in our country is on the track of healthy development.The main pipe type of oil and gas pipeline project in China.

China's oil and gas transfer hot steel pipe has formed the basic pattern of the oil system subordinate steel pipe factory.With the low residual stress forming and the pipe end mechanism, the spiral welded pipe with strict quality control is now in place.The quality can be compared to the straight seam welding tube.Countries such as west-east gas obtained wide application in oil and gas long distance pipeline engineering,ASTM A106 seamless steel pipe industry must now under the big strength fully resolved to eliminate key technology such as resistant defects of ERW welded pipe, plate CSP production technology development, with low cost, reliable quality of raw materials, and created good conditions for its future development.

The products are widely used in low-pressure fluid conveying pipe and construction scaffold pipe, bicycle and furniture structure.There is less investment in thermal steel pipe equipment, including phi 20mm, phi 89mmERW, the largest number of units (more than 90% of the ERW crew), and more than 60% of the total output of the ERW unit.Due to low investment, low technology and low interest rate.With lower prices of narrow-band (board) (continuous welding production of large diameter (from 1016 mm to 2400 mm weld pipe, simple production process, low operation cost, it has advantage of running the low interest, large diameter of low pressure water pipe and heat pipe and piling market has price advantage, but in the pressure pipeline engineering, especially in the gas pipeline application should have the necessary hardware configuration, and the physical and chemical inspection facilities such as nondestructive testing, strengthen quality assurance.

And a lot of exports.Therefore, the current capacity has been able to meet the needs of the construction of oil and gas pipelines in China.We should focus on strengthening the technological upgrading of existing units and strictly control new capacity building.And from 219 mm ~ 610 mmerw unit since the 1980 s about more than 30 sets of imported from abroad, the technology is advanced, after many years of production practice, equipment technical level has improved greatly, also in from time to time to improve product quality.This type of unit has been developing rapidly due to low investment, quick results and wide application.This part of the product has been developed from the fluid delivery and structural areas to the oil well pipe and pipeline pipe in the seamless tube applications.

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