With the continuous development of process technology, the quality of stainless steel pipe is constantly improving, making it more and more recognized in the process of use. At the same time, people have raised higher requirements, and hope that they will continue to improve in terms of quality and make breakthroughs in performance. Therefore, the development and application of new steel pipe is very necessary.

The anti-corrosion steel pipe is directed to the three processes of electrochemical corrosion of the buried pipeline, and the anti-corrosion method of the steel pipe also starts from suppressing one of the processes.

High pressure boiler tubes 20G to ASTM SA106B / C to ASTM SA210A / C ST45.8-III GB5310-2008 to ASTM SA106 to ASTM SA210

Main characteristics of 30CrMo steel pipe seamless steel This steel has high strength and toughness, high hardenability, and critical hardenable diameter in oil is 15~70mm; steel has good thermal strength, and has sufficient high temperature below 500 °C. Strength, but its strength drops significantly at 550 °C;

Main features of LSAW steel pipe: 1) The steel pipe has a longitudinal weld, and the inner and outer welds are welded by a submerged arc welding.

Sour services steel pipe is applied for pipelines in the corrosive environment. As we know, line pipe corrosion is an important factor affecting its safety service and service life. It will cause the leakage of oil and gas pipeline, some cases even explosion. Pipe corrosion has a big threaten to personal safety and environment pollution, so the production of sour service pipe is important. At present, the manufacture inspection standard for acid pipe mainly according to API Spec 5L.

First identified in the 1700s, nickel was first known as ‘kupfernickel‘ because it was found in a rock that looked like copper ore. Miners once thought that nothing of nickel, thinking that this element makes it difficult for them to extract copper from rocks. Little did they know that nickel would soon become one of the most essential industrial metals in the world.

Steel is one of the most common materials in the world, representing an industry that produces 1.3 billion tons a year, and it is a material used throughout the construction of many architectural fabrications.

As industrial applications have evolved and grown more complex, the piping products and systems that serve them have had to keep pace.

The carbon steel pipe is made of a steel ingot or a solid round steel through a perforation, and then is formed by hot rolling, cold rolling or cold drawing. Carbon steel pipe plays an important role in China's steel pipe industry.

From a macro perspective, the Sino-US trade war has officially started, and the seamless stainless steel tube market has increased concerns about systemic risks, but the state may adopt internal stimulus measures for hedging trade war pressure; from the industrial level, as high temperature weather continues, the terminal Demand continued to weaken, supply remained at a relatively high level, supply and demand for seamless stainless steel pipes evolved toward marginal weakness, but inventory remained low, and the contradiction between supply and demand was not prominent. For the market outlook, we believe that the price of seamless stainless steel pipes may continue to oscillate.

1. Forging method: use a swaging machine will be washed out, the pipe end or part of reduce diameter, commonly used type of forging machineRotary, connecting rod type, roller type.2. Stamping method: on the punch with a tapered core of tube end expanding to the required size and shape.

Grain refinement is also an effective way to improve strength and toughness of steel, the method of fine grains are mainly deformation processing and chemical add 2 broad categories, deformation processing method in the field of iron and steel production is mainly fine grains by controlled rolling and controlled cooling technology;

On November 21, 2018, the Mexican ministry of economic affairs in Mexico's official communique issued announcement, announced on Chinese seamless steel tube (Spanish: tuberiadeacerosincostura) start the sunset anti-dumping review of investigation.In the case of dumping investigation period for October 1, 2017 to September 30, 2018,

On December 9, the branch of China petrochemical gas natural gas pipeline in guangxi with the China national petroleum pipeline visitor station connectivity project, formal oil in pipeline gas supply to China.

The sustained supply side structural reforms, resolutely "capacity".Executives from domestic steel mills and its upstream and downstream enterprises, as well as representatives of departments, industry associations, research institutions, gathered in 22 to 23, "steel capital" anshan city in liaoning province, summarizes the development experience from the course of reform and opening-up, the pulse industry trend in the future.

According to the latest market report, the domestic galvanized seamless steel pipe spot steel market is still rising, and the average weekly increase in the most recent week is about 1.35%. The galvanized seamless steel pipe has continued to strengthen since July; the ex-factory price of steel mills has risen and the prices of raw materials have risen steadily; the “environmental storms” in some regions of China have shown signs of substantial advancement, all of which directly contribute to the domestic spot steel market. The role. Only after the steel price rose, the transactions in some markets slipped, and cautious merchants began to cash in, and some of the quotations gradually stabilized.

Capillary rolling is the main deformation process of seamless steel tube production. Its function is to make the wall thickness of the capillary close to or reach the thickness of the finished tube wall, and eliminate the non-uniform thickness of the longitudinal wall generated by the capillary in the process of perforation. The surface quality of the internal and external parts of the waste pipe is controlled, and the outer diameter and roundness of the waste pipe are controlled. The hollow capillary is rolled into a waste pipe near the final size.

According to foreign media reports, US steel prices seem to be affected by 232 tariffs, tinplate prices are rising sharply, and tinplate manufacturers will reflect price increases in negotiations with customers in 2019. It is reported that since the price of hot rolled strip of raw materials for tinplate production has increased, the price of tinplate in the United States has increased by more than $350/ton since last year. US tinplate manufacturers will begin negotiations with customers on prices starting in 2019 this fall. They will require a 50% price increase when the tinplate price is at a high market level and a 30% price increase when it is at a low market level, which is in line with the price increase of hot rolled products.

The European Union official gazette said that the EU will launch protective measures on Thursday (19th) to prevent a surge in steel imports into the EU after tariffs on imported steel and aluminum in the United States. The European Commission has proposed a combination of quotas and tariffs to address EU concerns, and the EU is concerned that steel products that are no longer exported to the United States may turn into the European market. The Lianhe Zaobao quoted Reuters as saying that the quota for 23 steel products was based on the import situation in the past three years, and the imported steel products exceeding the quota will be subject to a 25% tariff. According to reports, the countries that export steel to the EU are mainly China, India, Russia, South Korea, Turkey and Ukraine.

Tubes and bends in pneumatic conveying lines are suffering more or less abrasion. DMH United Steel's ceramic lined pipes resists abrasion and avoids product attrition.It reduces considerabley degradation of conveyed material and avoids formation of angel hair through its patented deflection chamber.The compact design reduces cost of pipe support and installation. It is automatically self-purging with little pressure drop.