A333 GR.6 Low Temperature Pipe Fittings Carbon Steel Eccentric Seamless Reducer Chemical Pipeline Connection

Production of seamless reducer:
Reducing pipe is a kind of pipe fitting used for pipe diameter. The commonly used forming process is reducing diameter pressing, expanding diameter pressing or reducing diameter plus expanding diameter pressing, and stamping forming can also be used for reducing diameter pipes of certain specifications.
Diameter reduction/expansion forming
The reducing forming process of the reducing tube is to put a tube blank with the same diameter as the large end of the reducing tube into a forming die, and press the tube along the axial direction of the tube blank to move the metal along the mold cavity and shrink into shape. According to the size of the reducing diameter of the reducer, it is divided into one-time press forming or multiple press forming.
Stamping
In addition to using steel pipes as raw materials to produce reducers, some specifications of reducers can also be produced by stamping steel plates. The shape of the die used for drawing is designed with reference to the size of the inner surface of the reducer, and the blanked steel plate is punched and stretched by the die.
Before bonding the reducer, use a dry cloth to wipe the socket side and the outside of the socket. When there is oil on the surface, wipe it with acetone. Pay attention to the following points:
1. Control caliber: DIN standard (DN10-DN150), 3A/IDF standard (1/2"-6"), ISO standard (Ф12.7-Ф152.4);
2. International industrial standards: DIN, ISO, SMS, 3A, IDF, etc.;
3. Product material: stainless steel 304, 316, 316L;
4. Quality and use: The inside and outside of the reducer are treated with high-end polishing equipment to meet the requirements of surface precision; this product is suitable for dairy, food, beer, beverage, pharmaceutical, cosmetics and other industrial fields;
5. External processing: non-standard products can be processed according to user requirements with drawings and samples;
6. Connection method: clamp (quick installation) type, welding type, thread (live connection) type.
Note that the size head is also suitable for pipe diameter reduction in the environmental protection dust removal industry. It is generally made of steel coil cutting and welding. The pipe diameters are different, and the materials are generally hot-rolled coils. The application is very good and can save costs.
Characteristics of stress distribution
The bending moment generated by the area pressure difference between the large and small ends of the reducer causes the large end to open relatively and the small end to contract relatively.
Standard system The international pipe flange standards mainly have two systems, namely the European pipe flange system represented by German DIN (including the former Soviet Union) and the American pipe flange system represented by American ANSI pipe flanges. In addition, there are Japanese JIS pipe flanges, but they are generally only used in public works in petrochemical plants, and they have little international impact. Now the introduction of pipe flanges in various countries is as follows:
1. European system pipe flanges represented by Germany and the former Soviet Union
2. American system pipe flange standards, represented by ANSI B16.5 and ANSI B 16.47
3. British and French pipe flange standards, each of the two countries has two casing flange standards.
In summary, the internationally used pipe flange standards can be summarized as two different and non-interchangeable pipe flange systems: one is the European pipe flange system represented by Germany; the other is represented by the United States American pipe flange system.
IOS7005-1 is a standard promulgated by the International Organization for Standardization in 1992. This standard is actually a pipe flange standard that combines two series of pipe flanges from the United States and Germany.
Divided by material
Carbon steel: ASTM/ASME A234 WPB, WPC
Alloy: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Low temperature steel: ASTM/ASME A402 WPL3-WPL 6
High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70
Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon leaching, PVC, PPR, RFPP (reinforced polypropylene), etc.
Divided by production method
It can be divided into pushing, pressing, forging, casting, etc.
Divided by manufacturing standards
It can be divided into national standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc.

      Hebei Zexu Pipeline Manufacturing Co., Ltd. has a complete production and operation management system and is one of the first companies in the industry to pass the ISO9001 quality management system certification, HSE environment, and occupational health and safety management system certification. The company has three manufacturing branches for steel pipes, pipe fittings, and boiler vessels, and has functional departments such as marketing department, technology department, purchasing department, production department, inspection department, quality assurance department, and comprehensive department. It has established a complete and complete set of quality, Safety, production and management procedures.
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