Appearance how to test the quality of spiral steel pipe
NewsMany users buy spiral steel pipe, due to the lack of professional testing equipment, this time only from the appearance of the quality of spiral steel pipe detection, the following are several common methods of determination.
1, from the…
Spiral steel pipe in the production of attention to matters
NewsSpiral steel pipe in the process of making spiral welded pipe, the following issues need to be noted.
1, oiling and marking: the spiral steel pipe in the inspection of qualified oiling operation to prevent corrosion, and marking according…
Spiral steel pipe welding seam disadvantages
NewsThe small length of the filler weld is 50mm. if the direction of the shortcoming on the base material of the steel pipe, the filler weld should be along the circumferential direction.
Patch welding seam should be repaired and ground, so that…
The role of spiral steel pipe and the main use of items
NewsCan say that related to the previous 10 years spiral steel tube industry, 14 years spiral steel tube industry is a dismal year, whether from the number of acquisitions, or from the price, a drop to low, the financial crisis erupted in 2008 than…
Spiral steel pipe surface rust removal treatment has several methods
News1、Cleaning
Apply solvents and emulsions to clean the exterior of steel to remove oil, grease, dust, slick and similar organic substances, but it cannot remove rust, oxidation skin, welding powder, etc. on the exterior of steel, so it is…
The appearance quality inspection method of spiral steel pipe
NewsJudging from the surface, that is, in the appearance of the inspection. Usually users in the purchase of spiral steel pipe, due to the absence of professional testing equipment, at this time can only use the naked eye on the quality of spiral…
Reasons for the delayed delivery of the spiral steel pipe factory
NewsReasons for delayed delivery of spiral steel pipe manufacturers
Customers who often purchase spiral steel pipes often encounter late construction deadlines. It is clear that the delivery time for signing the contract is ten days, but when…
What are the materials of the spiral steel pipe, which is better
NewsAt present, the most widely used spiral steel pipe material on the market is Q235B, mainly because Q235B material is relatively affordable and its performance is suitable for many industries, but in some special industries, high-performance…
What should be paid attention to when transporting seamless steel pipes
NewsIt can be said that more and more industrial enterprises will use seamless steel pipes, and some enterprises have also found that in the process of using such pipes, there may be a situation of corrosion sometimes. Relevant persons in charge…
How are common seamless steel pipes classified?
NewsClassification of national standard seamless steel pipes: seamless steel pipes are divided into two categories: hot-rolled and cold-rolled (dial) seamless steel pipes. Hot-rolled seamless steel pipes are divided into general steel pipes, low…