An eccentric size head refers to a size head whose center is not on the same line. The function is to attach walls or pipelines without space, and to connect two pipes of different caliber to change the flow size.
（Eccentric different-diameter pipe）It is a kind of pipe fitting which is used to change the diameter of pipeline. The forming process is usually used as shrinkage pressing, expanding pressing or adding diameter expanding pressing, and stamping forming can also be used for some diameters of diameters.
The forming process of eccentric diametral tube is to put the tube blank which is equal to the big end diameter of the diameter-tube into the forming die, and by pressing along the axial direction of the tube blank, the metal moves and shrinks along the die cavity. According to the size of diameters, it can be divided into single pressing forming and multiple pressing forming. Eccentric diameters are characterized by carbon steels with significantly higher strength than those of the same carbon content, with good toughness and plasticity, good weldability and corrosion resistance, etc. .
1. 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-WP911C 15Mo3 15CrMoV, 35CrMoV
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A 403 WP 316-316 L-316 H-316 LN-316 N-316 Ti
ASTM/ASME A 403 WP 321-321 H ASTM/ASME A 403 WP 347-347 H
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, plastics, argon, PVC,PPR,RFPP (reinforced polypropylene), etc.
2. The method can be divided into pushing, pressing, forging, casting and so on.
3. It can be divided into national standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard and so on.
LPG pipeline engineering, natural gas pipeline engineering, chemical plant, power plant, shipyard, pharmacy, dairy, beer, beverage, water conservancy, etc.
1. when the flow rate of the fluid in the pipeline changes, such as increasing or decreasing, the change of flow velocity is not obvious, it is necessary to adopt the diametral tube.
2. In order to prevent cavitation at the inlet of the pump, the diameters need to be used.
3. with the meter, such as Flowmeter, regulating valve joint, in order to cooperate with the instrument, also need to adopt diameters.
manner of packing
No fumigation wooden box, tray according to customer requirements for special packaging.
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