1. Crane wheel, wheel axle through high frequency quenching and quenching and tempering treatment, effectively eliminate internal stress, ensure the machining accuracy.

2. Main girder plates main using ray inspection and ultrasonic testing to welding connection seam and corner seam in order to ensure weld quality.

3. In the main girder field, first to adopt intelligent and efficient welding robots, seam welding of the main beam adopt advanced MAG, adopt Ar+Co2 Mix protective gas, outside of the four main girder adopted submerged arc weld angle welder.                              

4. Adopted rolled steel drum or seamless steel tubes, Henan Mine Crane Co.,LTD has an industry-leading rolled steel drum production and processing production line, from pre-bending presses 1250t, to three roll bending machine convolutions, to the cylinder longitudinal seam and girth automatic welding center welding and heavy CNC horizontal lathe machining cylinder.

1. Weight overload protection device.

2. Top quality long time bearing polyurethane materials buffer.

3. Lifting limit switch

4. Crane travelling limit switch.

5. Trolley travelling limit switch.

6. Voltage lower protection function.

7. Emergency stop system.

8. Wind speed indicator

9. Current overloads protection system and so on!

Design rules for cranes GB/T3811-2008

Safety rules for lifting appliances GB6067.1-2010

General Gantry Crane GB/T14406-2011

Gantry crane manufacturing and tolerances of rail installation GB/T10183-2005

Crane test specification and procedures GB/T5905-1986

Crane electric control equipment JB/T4315-1997

Important application wire rope GB8918-2006

Carbon structure steel GB/T700-2006

Low alloy high strength structure steel GB/T1591-2008

Welding joint radiographic inspection standard JB928-1994

Steel welding joint manual ultrasonic flaw detection way GB11345-1989

Henan Mine Crane could arrange engineer to do supervision of installation, make the load test, do commissioning, training of the buyer's workers, the buyer should be responsible for each of our technician’s accommodation, meals, round-trip tickets, travel expenses and self-security. The engineer’ salary is USD100.00 per day abroad.

1. Quality problems of products sold by our company will be solved as per the “three guarantees” system of our company by the “three guarantees” service team;

2. Related personnel will be sent to the site immediately after receiving quality complaints (by call, letter or oral notice) from clients;

3. Personnel involved in after-sales service shall be serious and considerate in handling the problem to make clients care-free;

4. In addition to solve quality problems, personnel involved in after-sales service shall train clients, answer their technical inquiries and related questions free of charge;

5. Related cost for products with quality problem will be shouldered by our company. Our company charges for quality problems caused by clients (or problems after the warranty term), but the charge will not be higher than the expense (or cost);