1. The arc starting of the stainless steel pipe fittings adopts the reflow method, and the arc ending adopts the method of full arc crater. In the over-scale of arc starting, it should be completed within the slope, and arcing and arcing should not be performed on the surface of the pipeline and the

1. How does the gnawing of straight seam steel pipe happen? What is the effect on welded pipes?The gnawing edge of the straight seam steel pipe usually occurs on the slitting coil. The gnawing edge of the straight seam steel pipe is the appearance of jagged and uneven edges of the steel belt. The st

Project Location: Canada.Product: oil casing.Specifications:84*3*6000mm.Application: oil project construction.Arrival time: 07.12.2022.The steel pipes have arrived in Canada and were put into project use. Many cooperations have given the customer full confidence in THREEWAY STEEL.

The annealing of straight seam steel pipe is to heat the steel pipe to a temperature and keep it warm at this temperature and then slowly cool it to room temperature. There are several types of annealing, such as annealing, spheroidizing annealing, and stress relief annealing.1. Heating the steel pi

1. Organize relevant operators, be familiar with construction drawings and regulations, formulate welding procedures, and compile welding operation instructions.2. Welders should be trained in corresponding projects and have operation qualification certificates for corresponding projects.3. Check wh

1. IPN8710 anti-corrosionWhen there are many types of corrosive media in the steel pipe, such as acid, alkali, salt, oxidant, and water vapor, the coating must be chemically inert and resistant to acid, alkali, and salt corrosion. The coating film should have a dense structure, good waterproof perme

1. Distinguish welded steel pipes and seamless steel pipes according to the process.In the process of identifying welded steel pipes and seamless steel pipes according to the process, all-welded steel pipes are welded according to cold rolling, extrusion, and other processes. Spiral pipe welding and

The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multiple rollers, the strip is gradually rolled up to form a circular tube blank with an opening gap. 3mm, and make both ends of the welding joint flush.1. If the gap is too large, the proximity effect will be reduced,

Thick-walled steel pipes and thin-walled steel pipes have a big difference in the thickness of the pipe wall. The diameter of the steel pipe wall is greater than 0.02, we generally call it thick-walled steel pipe. Thick-walled steel pipes have a very wide range of applications. Due to their thicker

The straight seam steel pipe is a steel pipe with the weld seam parallel to the longitudinal direction of the steel pipe. It is usually divided into metric electric welded steel pipe, electric welded thin-walled pipe, transformer cooling oil pipe, and so on. The production process of straight seam w