Many customers believe that the heavier the thread pipe fitting, the better the quality and the less likely it is to leak. However, this is a common misconception.
In order to ensure safe and leak-free pipe fittings, here are some factors to take into consideration:
No.1: The Annealing Technology (For Malleable Iron Pipe Fittings)
It is imperative to note that malleable iron is not ordinary iron. An annealing process is required before iron can react to become malleable cast iron. In annealing, atoms migrate in the crystal lattice and the number of dislocations decreases, leading to a change in ductility and hardness, malleable iron will be more ductile. Moreover, Jianzhi Group has patents for an annealing technology that ensures that every pipe fitting is effectively annealed.
No.2: The thread accuracy
The thread standard requires that the angle deviation of the thread does not exceed 0.5°. Jianzhi thread standard requires does not exceed 0.3°, 40% higher than the standard.
No.3: 100% Air tightness test
Before packing, we will test our pipe fittings with a 0.6Mpa Air tightness test one by one. Even with a 7 Mpa water pressure test, Jianzhi brand pipe fittings could pass the test easily. Welcome to contact us to get the test video. Safer, no leak is our base requirement.
No.4: Unique Chain Link Type Quality Control
Jianzhi Group invented “Chain Link Type Quality Control” and won the second prize of Enterprise Management Modernization Innovation Achievement awarded by The Ministry of Agriculture of China in August 1994.
“Chain Link Type Quality Control” refers to the layer-by-layer in section in each manufacturing procedure where product quality is strictly controlled. In other words, the products are under strict inspection when they are transported to the next procedure, and the unqualified ones must be eliminated.
Once a defective product is found in a procedure of production, the last procedure and the personnel concerned will be responsible for mistakes while related ones in this procedure will be awarded.