La tubería de acero sin costura se divide en estirada en frío y laminada en caliente, pero la superficie no ha sido tratada. Existen varios tipos de tubos de acero sin costura y están relacionados con su material y estándares de implementación.

ASMT A333 Grade 1 seamless and welded pipes shall be treated to control their microstructure.

ASTM A333 Grade 3 is the part of standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. ASTM A333 Grade 3 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.

ASTM A333 Grade 7 Standard covers seamless and welded steel pipe for low temperature service.

ERW significa soldadura por resistencia. La soldadura por resistencia tiene las características de alta eficiencia de producción, bajo costo, ahorro de material y fácil automatización. Por lo tanto, es ampliamente utilizado en la aviación, aeroespacial, energía, electrónica, automóviles, industria ligera y otros sectores industriales. Es uno de los procesos de soldadura importantes.

Introducción de tubos compuestos de acero-acero-plástico de uso común, tubos de acero sin costura de gran diámetro

Tubería de acero espiral de soldadura por arco sumergido

Tubo de acero soldado

Silicon carbide is formed in two ways, reaction bonding and sintering. Each forming method greatly affects the end microstructure.

ASTM A519- specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required.

La tubería en la carcasa de petróleo es un oleoducto que transporta petróleo crudo y gas natural desde la capa de petróleo y gas a la superficie después de que se completa la perforación.

La tubería en la carcasa de petróleo es un oleoducto que transporta petróleo crudo y gas natural desde la capa de petróleo y gas a la superficie después de que se completa la perforación.

La tubería en la carcasa de petróleo es un oleoducto que transporta petróleo crudo y gas natural des

ASTM A213 T5 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.

Some steel companies lowered the purchase price of scrap steel, ranging from 20-30 yuan (ton price, the same below). As a result, the scrap market from North China to East China has declined. At this stage, most traders did not participate.

Proceso de producción de tubos de acero en espiral: Es un tubo de acero con costura en espiral soldado mediante soldadura automática de arco sumergido de doble cara de doble alambre con bobinas de acero en tiras como materia prima, a menudo extruidas y formadas.

For the next week's market, remind everyone to pay attention to the following aspects: First, the demand factor. According to the data of the Xiben Shinkansen trading platform, although the high temperature weather has obviously eased this week, the demand for terminal demand in Shanghai continues to decline, factors such as the reduction of iron ore and billet prices and the fall of steel futures have aggravated the market's wait-and-see mood. In the process of rising prices in the early period, the site has generally increased the inventory replenishment. The market demand has been overdrawn to a certain extent. At the same time, the price decline has also reduced the enthusiasm of the site replenishment. The terminal demand for steel pipes will still be difficult to improve next week.

The arrival of each finished product resource is relatively limited, and the main resources of the steel pipe circulation link still appear to be broken, and the rise of the futures market has obvious supporting effect on the stability of the spot market sentiment, coupled with the stable growth policy, the bottom steel market, the transaction status of the main finished products Some things have changed, and the overall price has remained strong and shocked in the short term.

Tubo de acero compuesto de acero inoxidable