High Quality
All steels are selected from high-quality Q345B,Q235B steel, and the main chords and diagonal struts are made of special square steel pipes and angles steel.
Durability
the standard section is all processed by the overall 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.
More Secure
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.
Professional Service 
SYM has more than 20 years tower crane experience. SYM will supply you best professional advice. 24 hours customer service give you quickly feedback.