Pine Sleeve flange commonly known as PJ/LJ flange, divided into PJ/SE flange and PJ/RJ flange. Often used in medium temperature and pressure are not high, and the medium corrosive strong situation.
When the medium is strong corrosive, the flange contact medium part (flanging short section) for corrosion-resistant high-grade materials such as stainless steel materials, while the external use of low-grade materials such as carbon steel flange ring CLAMP it to achieve seal.
Specification of PJ flange:
Standard: AMSE,GOST,DIN,JIS
Material: Carbon steel/Stainless steel
Size: 1/2’’-36’’
Continue face: RF,FF,MFM
Flange outer diameter: 75mm-2190mm
Center circle diameter of bolt hole: 50mm—-2130mm
The diameter of bolt hole: 11mm-30mm
The number of bolt holes: 4 -48
Thread: M10-M27
Flange thickness: 12mm-58mm
Pipe outer diameter: A (17. 2-2032MM) B (14-2020MM)
Internal flange diameter: A (18-2036MM) B (15-2024MM)
Flange theoretical weight: 0.36kg–234.6kg (DN1800)
Flange pressure: Class 150 – Class 2500
Introduction PJ/SE flange:
PJ/SE flange is a flange that can be active, generally supporting in the water supply and drainage fittings, factory factory telescopic joints at both ends of a piece of flange, directly with the project pipeline, equipment with bolted. The purpose of using pj/se flange is generally to save material, the structure of which is divided into two parts, one pipe and one pipe, and one end to weld ring. The flange uses low grade material, and the pipe part uses the same material as the pipe, achieves the material saving purpose.
Introduction PJ/RJ FLANGE:
PJ/RJ Flange flange is a flange that can be active, generally supporting in the water supply and drainage fittings, factory factory telescopic joints at both ends of each have a piece of flange, directly with the project pipeline, equipment with bolted. The purpose of using PJ/RJ flange is generally to save material, its structure is divided into two parts, pipe part one and pipe, one end made flanging, flange part of the flanging. The flange uses low grade material, and the pipe part uses the same material as the pipe, achieves the material saving purpose.
Characteristics of LJ/PJ Flange flange:
1.Save the cost. When the material is special and the price is expensive, the flange with the same material is high cost.
2.Not easy to weld or not easy to process or require a large strength. Such as plastic pipe, glass pipe and so on.
3.Easy construction. If the flange bolt hole corresponding to the connection is not easy to find or to prevent future replacement of equipment flange bolt hole has changed.
The disadvantages of PJ flange:
1.Under pressure low.
2.Low strength of the weld ring (especially when the thickness is below 3mm)
