(a) Service life of Grip pipe coupling?
The design service life is about 15 years
(b)Can the inner sealing rubber ring of Grip pipe coupling be replaced self？
Can not be replaced by self
(c) Is there any special requirement for surface treatment of piping system for grip pipe coupling?
There is no special requirement for pipeline treatment. After galvanizing and coating, the coupling can be used for pipeline connection.
(d) Pipe diameter range？
26.9mm-2030mm，At present, most of the ship’s pipelines are used for with diameter below DN250
(e) Is grip pipe coupling bolt customized？
The coupling bolts need to be customized from the manufacturer Grip and cannot be purchased in the market
(f) Whether grip pipe coupling can be used for connection of different materials
It can be used as long as the internal medium is the same and the outer diameter deviation of different materials is less than 3mm
(g) Number of disassembly and assembly of grip pipe coupling？
Generally, the service life is about 10 times of disassembly and assembly on the premise of avoiding violent disassembly and assembly
(h) Requirements of grip pipe coupling for pipeline installation accuracy？
The axis deviation is within 3mm, the angle deviation is within 4 ° – 5 °, and the heterodyne deviation is within 3mm. According to the different pipe diameters, the distance between the pipe ends is required to be within 0mm-60mm. Grip pipe coupling can be used for installation within the above single and multiple superposition error range.
(i) The shell of grip pipe coupling is made of stainless steel. Will the installation and carbon steel pipe shorten the service life of pipe connector due to electrochemical corrosion?
The seawater and other fluids in the pipe mainly pass through the pipe itself and the rubber seal ring at the joint, so it is difficult to produce electrochemical corrosion with the metal shell of the pipe coupling. At present, our company has not received any case feedback about the damage of pipe coupling shell caused by electrochemical corrosion。
(j) Precision requirements of grip pipe coupling on the end of pipe system？
Ensure that the scratches at the end of the pipeline in the axis direction are less than 1mm, and there is no obvious deformation in the roundness direction.
(k) Whether paint spraying is allowed on the surface of pipe connector
It is not allowed. The coupling shall be effectively protected during painting. Paint adhesion adhere to coupling bolt affect coupling removal and maintenance。
Post time: Jun-17-2020