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Production process and characteristics of hot rolled seamless steel pipe
Hot rolled seamless steel pipe: compared with cold rolling, cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling above the recrystallization temperature. Advantages: it can destroy the casting structure of ingot, refine the grain of steel and eliminat...Read more -
What is the purpose of 304 stainless steel pipe?
304 stainless steel pipe is a kind of high alloy steel which can resist corrosion in air or chemical corrosion medium. 304 stainless steel pipe is a kind of steel with beautiful surface and good corrosion resistance, which gives full play to the inherent surface properties of stainless steel with...Read more -
There are other reasons for the reduction of production during the Spring Festival
The “Winter Olympics” has a limited impact on ferronickel production. There are other reasons for the reduction of production in the Spring Festival. 1、 Nickel iron smelting around the venue According to the investigation, among the ferronickel smelting enterprises around the ...Read more -
Standard for steel grade of petroleum casing
The steel grades of casing include H40, J55, K55, M65, N80, L80, C90, C95, T95, P110, q125 and V150. H40 is a low-grade steel, which is rarely used in the market. The yield strength of J55 and K55 belongs to the same level. The difference between them is that the tensile strength of K55 is...Read more -
Production method of P91 alloy pipe
1. It is divided into P91 alloy pipe hot rolled pipe, P91 alloy pipe cold rolled pipe, P91 alloy pipe cold drawn pipe, P91 alloy pipe extruded pipe, etc. The solid pipe blank is checked and cleaned of surface defects, cut into the required length, sent to the heating furnace for heating and perfo...Read more -
Stainless steel prices are difficult to rise or fall
A wave of procurement at the end of the downstream made the price of stainless steel step up a ladder, but after the excitement, stainless steel returned to calm. The price of stainless steel in Foshan market began to enter a stable stage these two days. It is difficult to rise; It’s not ea...Read more -
How to identify stainless steel pipe?
1、Magnetic test Magnetic test is the simplest method to distinguish annealed austenitic stainless steel from ferritic stainless steel. Austenitic stainless steel is non-magnetic steel, but it will have slight magnetism after cold working under high pressure; Pure chromium steel and low alloy ste...Read more -
Knowledge of hot dip galvanized pipe
Steel pipes are used to transport gas and heating in daily life. In order to improve the corrosion resistance of these steel pipes, the steel pipes will be galvanized. Galvanized steel pipes are divided into hot-dip galvanizing and electro galvanizing, in which the hot-dip galvanizing layer is th...Read more -
Purpose and characteristics of reducer
Purpose of reducer: 1. Precision cast stainless steel valves can be used for the control of water, gas, steam, oil and corrosive media in chemical, petroleum, metallurgy, light industry, electric power, plumbing, food, medicine, fiber, ink and other industries. 2. Sanitary valves, fluid pipe fitt...Read more -
What are the classifications of stainless steel?
1. Austenitic stainless steel Austenitic stainless steel refers to stainless steel with austenitic structure at room temperature. When the steel contains about 18% Cr, 8% ~ 25% Ni and 0.1% C, it has stable austenite structure. Austenitic chromium nickel stainless steel includes famous 18Cr-8Ni st...Read more -
Precautions for maintenance of stainless steel elbow
Stainless steel elbows will not produce erosion, pitting, corrosion or wear. Stainless steel is still one of the building metal materials. Because stainless steel has good corrosion resistance, it can effectively maintain the integrity of engineering design of structural components. Chromium cont...Read more -
Basic Knowledge of Oil Casing
Casing is a kind of large-diameter pipe, which plays the role of fixing the oil and natural gas well wall or well hole. The casing is inserted into the borehole and fixed with cement to prevent the borehole from separating the rock stratum and borehole collapse, and ensure the cyclic movement of ...Read more