Raw material control:
1.The steel material selected 100 % comes from our natlonal large-scale steel corporations .
2.The materials that steel,welding material etc are all examed by chemical detection ,
3.Strictly conforms to drawing requirements,
4,Every pins ,axles,sleeves etc are strictly obey quenching and tempering procedures .
5,Every parts of our products strictly conforms to the procedure requirements
6, perform the requirements of the ISO9001 Quality System and national standard strictly.
The mast bolt is all processed by the overrall
sand blasting process. The surface is smoother and
more beautiful. It is treated with anti-corrosion blasting.
It uses the highest quality paint in the tower crane industry,
with strong adhesion and longer durability.
All chord connections are all gas-shielded and
welded. All the products are tested by weld
inspection, x-ray and UT ultrasonic inspection.
It is more secure.
SYM has more than 20 years tower crane experience.
SYM will supply you best professional advice. 24 hours
customer service give you quickly feedback.