DIN 2391 St37.4 Precision Tube,Cold Drawn, 6MM X 1MM, NBK, 1.0255, Painting Treatment.
Introduction to Steel
Stainless steel pipe (Stainless Steel) is a kind of hollow long strip cylindrical steel. Its scope of application is used as a pipeline for conveying fluid. It is mainly used in petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and other industrial transportation pipelines, as well as mechanical structure components. Stainless steel pipe is made of steel billet of acid and heat resistance, which is heated, perforated, fixed diameter, hot rolled and cut.
Classification
Classification of stainless steel pipe: stainless steel seamless steel pipe and stainless steel welded steel pipe (sewn steel pipe) basic two categories. According to the shape of the outer diameter of the steel pipe, it can be divided into round pipe and special-shaped pipe. The circular steel pipe is widely used, but there are also some square, rectangular, semicircular, hexagonal, equilateral triangle, octagonal and other special-shaped steel pipes.
For steel pipes under fluid pressure, hydraulic test and ray inspection are carried out to test their pressure resistance and quality. No leakage, soaking or expansion occurs under the specified pressure. Some steel pipes are also required to carry out crimping test, flaring test, flattening test and so on according to the standard or requirements of the demand side.
Seamless stainless steel pipe, also known as stainless steel seamless pipe, is made of steel ingot or solid pipe billet through perforation, and then hot rolled, cold rolled or cold dial. The specification of seamless steel pipe is expressed by outer diameter * wall thickness millimeter number.
304 stainless steel pipe full name SUS304 stainless steel pipe.
SUS304 stainless steel pipe belongs to the stainless steel pipe of American grade, the domestic grade is equivalent to 0 Cr19Ni9 stainless steel pipe, usually replaced by 0 Cr18Ni9.
The rust-proof mechanism of stainless steel is that alloy elements form dense oxide film, insulate oxygen contact and prevent further oxidation. So stainless steel is not "stainless ".
There may be several reasons for the rusting of 304 materials:
Chloride ions exist in 1. use environment.
Chloride ions exist widely, such as salt, sweat, sea water, sea breeze, soil and so on. Stainless steel in the presence of chloride ions in the environment, corrosion quickly, or even more than ordinary low carbon steel.
Therefore, the use of stainless steel environment requirements, and often need to wipe, remove dust, keep clean and dry.
316 and 317 stainless steel (317 stainless steel properties see below) are molybdenum-containing stainless steel. The molybdenum content in 317 stainless steel is slightly better than that in 316 stainless steel. Because of the molybdenum in the steel, the total performance of the steel is better than that of 310 and 304 stainless steel. At high temperature, when the concentration of sulfuric acid is less than 15% and higher than 85%,316 stainless steel has a wide range of applications. 316 Stainless steel also has good chloride erosion properties, so it is usually used in the marine environment.
With the development of social economy, stainless steel pipe has been widely used. Will certainly bring new changes in various fields.
Theoretical Weight of Stainless Steel Tube: W= Outer Diameter - Wall Thickness x x0.02491. Wall Thickness
Since the invention of stainless steel at the beginning of this century, stainless steel has combined the image of modern materials and the outstanding reputation in architectural applications, which has made its competitors envy. Stainless steel does not produce corrosion, pitting, corrosion or wear. Stainless steel is also one of the highest strength materials in building metal materials. Because stainless steel has good corrosion resistance, it enables structural components to permanently maintain the integrity of engineering design. Chromium-containing stainless steel also integrates mechanical strength and high extensibility, and is easy to process and manufacture components, which can meet the needs of architects and structural designers.

折叠编辑本段 dimensional discrepancy

折叠

HEBEI PENGXIN PIPELINE EQUIPMENT GROUP CO.,LTD.. was established in the early 1990s, is located in China elbow pipe capital "mengcun" golden hinterland New hope. Here north of Beijing and Tianjin, south of Jinan, east Huanghua port, excellent location, ease of access and the unique economic environment for the development of the company provides unlimited opportunities.
After nearly two decades of hard business, Hebei Peng Xin Pipeline Group Ltd. has now developed into a set of tube production, steel logistics, sales and export as one of the group of companies. Which owns Hebei Peng Xin Pipe Group Co., Ltd. Hebei Peng Xin Xin Ding Pipe Group Co., Ltd., Hebei Peng Xin Hua Tuo High Pressure Pipe Group Co., Ltd., Hebei Xin Peng Bo Tao Group Pipe Manufacturing Co., four large-scale companies.

Group covers an area 66,600 square meters, the total assets of 318 million yuan, registered capital of 1.0188 billion yuan, annual production of 30,000 tons pipe fittings, pipe throughput of nearly ten million tons. The company currently employs 628 people, including engineers, economists, accountants 128 people. Widespread branches and offices in major cities in the country, while the company also has independent export right, the products are exported to Europe, America, Southeast Asia, Russia and other countries and regions.

Laid a strong foundation for the development Peng Xin Group, the Group has 5,000 tons of press, large heat treatment furnace, a large IF pushing machine, a large bending machine, beveling machine, sawing machine, lathe, drill press, tee cold extrusion machine, plywood hammer, vertical lathe, large sandblasting machines and other related facilities 316 sets. Has advanced physical and chemical metallurgical, nondestructive testing, material testing equipment more than 40 sets. And has the world's most advanced metallic materials direct reading spectrometer, employing all the national and provincial authorities to obtain recognized qualifications, and in strict accordance with the company's quality assurance system for production traceability. After years of hard work group company has passed the ISO9001 international quality system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health and safety management system certification most authoritative industry certification.

Quality determines survival, the details determine success or failure. Customer satisfaction for the purpose of quality concept, created Peng Xin Group's quality and strength.
Peng Xin Group uphold integrity first, create business opportunities business philosophy. Depending on the product quality and Honor for the group life, years of spot check inspection Peng Xin Group's products are always 100% qualified.
Our main products are electricity, chemical equipment, carbon steel, alloy steel, stainless steel, X-class series and a variety of materials elbows, bends, reducers, tees, crosses, head, flange, bearing plug-in, hangers and other pipeline products. Company carbon steel, alloy steel, stainless steel and other wall thickness, size pipe.

Peng Xin Group is the large seamless steel pipe, straight seam steel pipe, spiral steel pipe, steel pipe logistics base, annual inventory of 38,000 tons or more. Operating Chengdu Steel, Shanghai Baosteel, Tianjin big seamless, Jiangsu Chengde, Longchuan steel mills, Shandong giant, Steel, Anshan Iron and Steel and the United States, Japan, Germany, Italy and other countries products. And to Panzhihua, Chengdu Seamless Steel Tube Plant, Hengyang Valin Steel Tube Co., Ltd., Jiangsu Chengde Steel Tube Co., Ltd. distributor in North China. Simultaneously and professional production 300000, 600000, 1000000 subcritical, supercritical, ultra-supercritical, thermoelectric four pipes and pipe factory piping.

Group products are mainly used in petroleum, chemical, natural gas, nuclear power, thermal power, metallurgy, heat pipe, shipbuilding, construction and other industries. With Datang, Huaneng, Huadian, Guodian, China National Petroleum Corporation, China National Offshore Oil Corporation, rings technology into the Engineering Company, Saiding engineering company, China Lu engineering company, Sinochem Second Construction, Chongqing Chemical Medical Group, Xiamen Xianglu Group, Xinjiang Guinness company, chemical and Thailand, sky, Lu Tien-oriented, Plum MSG, Ershisanye, Shandong Sea Chemical Yongxin petrochemical, large stone technology, Chen Hung chemicals, Wanhua Group etc. has always been a good cooperation.

Peng Xin is its distinctive brand positioning, three-dimensional marketing strategies in the industry leading the way.
Group Company has obtained API, CE, ASME and other international and national certification issued by the General Administration of Quality Supervision, Inspection and China special equipment manufacturing license, the State Power Corporation power plant parts supply network member factory, Hebei Boiler and Pressure Vessel Supervision, Inspection and Supervision, Inspection Unit , China National Petroleum Corporation supplies network member unit of China National Offshore Oil Corporation qualified suppliers, Datang International Network Supplier Membership materials, China Huadian Corporation tendering and procurement network provider group-level member of "China metal materials distribution industry leader ", Hebei Province, taxes hero and many other honors
Challenges facing the industry, Peng Xin Group, adhering to the essence Xeon technology, the service flawless reputation to really sincere business philosophy, and constantly introduce new technologies, develop new projects and seek new areas. In the future, Peng Xin people are to unity, progressive attitude, being in the forefront of pipeline equipment industry to do the industry leader position leading international brand.