First, the difference between the QD type and LH type substantive: QD can reach a higher level of work, LH difficult to achieve high levels of use, this is the Achilles heel of double gourd, if forced to use can also be used, but to reduce the equipment for life . This is a substantial difference (in the case of the landlord said five tons qd-type electric double girder overhead cranes, large tonnage, high working level does not recommend the use of double gourd) Second, the volume Yang and gourds have any obvious difference: say obvious words (wheel pressure, level, etc. is not obvious), the structure in different forms, is the biggest obvious difference, there are different price points. Third, what better practicality: This depends on the manufacturer's usage, and on the landlord description, according to tonnage, etc., frequency of use, the working time factor evaluation: QD most applicable to the landlord. Four, list the advantages and disadvantages: QD: can carry a strong working level, can be used in more complex conditions and relatively poor condition. Easy maintenance. But the price is high, the big wheel pressure, weight volume. LH: compact, light weight, simple operation, saving space. The disadvantage is that the work can not reach a high level five, the control mode What is the difference: Ground Operation: handle operation / remote operation. Empty parade: Cab (cam control, joint control station) 1, Handle: people go with the car, saving people, both can control the traffic, but also hanging objects. Cons: people walking more dangerous with hanging objects 2, remote: lifting larger and dangerous goods can not follow the traffic go. Cons: limited vision. 3, air operations: Operation vision. Cons: hand operation, requires the following personnel fit. Gravity of Henan Crane Co., Ltd. is a professional production of crane manufacturers, the company's main product types: single-beam, dual-beam bridge, gantry cranes, suspension cranes, CD, MD type 0.5T-50T electric hoists, explosion-proof electric hoist qd type double girder overhead cranes, slewing cranes, various models grab, series electric vehicles and non-standard design and manufacturing, sales, installation, Inc. is China lifting trade association units. Products sold throughout the country, the trust of customers. The company is "contract, the word" advanced enterprises, has experienced technical personnel and technical team, strong technical force, sophisticated production equipment, advanced technology, detection means complete, safety performance can standards, products have passed the national acceptance and issued a "special equipment manufacturing license", "manufacturing safety license", "special equipment installation, alteration, repair permit"; and passed the inspection and acceptance of International Quality Certification Center awarded "ISO9001" Quality Management System Certification products are sold in more than 20 provinces. Company for the state power, metallurgy, mining, port and bridge construction has made great contributions. The company currently employs more than 150 people, covers an area of ??50,000 square meters, with assets of 1.35 billion yuan, more than 100 domestic and international sales and service organization qd type of radiation, with annual sales of lifting equipment more than 2,000 Taiwan (sets), and won several provincial, City advanced units, and enterprises to develop qd-type bridge crane, talent is the key, and quality is fundamental, integrity is patron. I hired a company with outstanding management personnel and high-level technical personnel, regular staff training, so that enterprises have a sound quality assurance system, strict scientific management system, strong production capacity and advanced detection instruments, and a Supporting large sales and service team, all delivery inspection pass rate of 100%. I hope for an early takeoff gravity companies can contribute to your economic industry! qd double girder crane _ Henan gravity (certified) _ Shanghai qd type provided by the gravity of Henan Crane Co.. "Single and double girder gantry crane, small light lifting equipment, lifting accessories, electric hoist." Preferred gravity of Henan Crane Co. (2), the company is located at: Changyuan Wei Zhuang Industrial Zone, over the years, Henan gravity to provide customers the best quality service, contact: Hulu Jun. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Henan gravity expect to be your long term partner!