The Company has complete and total manufacturing processes from raw material entering to factory and up to the final finished products to customer, which all are done under same premises. Therefore we can control the quality and delivery time at our best.
1.Raw materials entering the factory, 27SiMn, 40CrMo, ST52, 45# steel tubes or bars for choice
2.Do the pre-treatment including pickling, phosphating and saponification, and then cold-draw the seamless steel tubes.
3.Put the steel tubes into the tempering furnace to do the stress relief annealing in convenience of the subsequent the processing.
4.Multi-roll straightening machine, with 10 straightening points, achieves the automatic rolling straighten, improving the efficiency greatly
5.Heat treatment to obtain workpieces with different properties by changing their internal microstructure or surface chemical composition.
6.Cylindrical degree can be controlled within 0.03mm and the surface roughness is up to 0.4 by honing with range:φ40mm-φ450mm and longest length: 12000mm
7.Machining processes to obtain high precision parts with complex shapes strictly according to the detailed drawings
8.Electroplating production processfulfillsthe functional and ornamental requirements for coating workpieces of different dimensions according to specific application requirements.
9.Cleaning all the parts by automatic cleaning machine in the special solution and under specific temperature control effectively
10.All the parts are assembledinto complete cylinders according to the strict assemblyinstructions by skillful workers in dust-free workshop.
11.Do proof pressure and performance tests to check whether the cylinders can operate smoothly and stably under the specified pressurewith no leakage and deformation
12.Do the painting including high quality primer and topcoat to obtain beautiful appearanceand protect the cylinders against the anticorrosion.
13.Wooden palletor boxes packing with plastic films wrapped on the surface, suitable for long-time sea transport