威海萬(wàn)豐集團(tuán)系山東省建筑機(jī)械重點(diǎn)生產(chǎn)廠商，現(xiàn)有職工600人，固定資產(chǎn)8000萬(wàn)元，廠區(qū)占地面積90000平方米，本廠技術(shù)力量雄厚，生產(chǎn)設(shè)備精良，檢測(cè)手段先進(jìn)。
主要產(chǎn)品：QTZ20系列、QTZ315系列、 QTZ40系列、 QTZ63、 QTZ80、 QTZ125、 FO/23B、 H3/36B塔式起重機(jī)；SC200/200施工升降機(jī)、SS80/80物料提升機(jī)；HBT60.13.90S混凝土泵。產(chǎn)品銷往全國(guó)二十多個(gè)省市和地區(qū)。
本廠經(jīng)營(yíng)宗旨：信譽(yù)第一，用戶至上。
本廠竭誠(chéng)與廣大用戶攜手共創(chuàng)建筑業(yè)輝煌的明天。
                                               董事長(zhǎng)：馬尚泉
Weihai Wanfeng group is the main enterprises in Shandong which produces construction machinery. Now it has 600 staffers, fined assets of 80 millon yuan and covers an area of 90000 square meters, with excellent productions equipment and advanced test means, the factory is aboundant in technical free.
The main products of the factory are: tower crane QTZ20 seres.QTZ315 seres. QTZ40 seres. Qtz63.QTZ80.QTZ125. FO/23B. H3/36B; SC200/200 construction elevator;SS80/80 Hoist of a seres of materials; HBT60.13.90S concrete pump products are sold to more than twenty provinces all over the country.
Weihai wanfeng construction machinery factory heartly wish to creat a brilliant future of construction together with all of their custmers.
Board chairman: Ma shangquan

QTZ20(3006) QTZ20F (3006) St

QTZ20(3006)塔機(jī)特征及優(yōu)點(diǎn)
1. QTZ20、QTZ20F塔機(jī)額定起重力矩200KN.M,最大工作幅度30米.
2. QTZ20、QTZ20F塔機(jī)獨(dú)立固定狀態(tài)起升高度為25.5米,附著狀態(tài)可達(dá)到動(dòng)50米.該機(jī)結(jié)構(gòu)合理、新穎、性能優(yōu)良，外觀美觀，臂架覆蓋面積大，起升高度高，操作簡(jiǎn)單，維修方便，廣泛應(yīng)用于14層以下的樓房的建筑施工。
3. QTZ20、QTZ20F塔機(jī)回轉(zhuǎn)機(jī)構(gòu)采用先進(jìn)的行星齒輪減速器，液力偶合器及回轉(zhuǎn)支撐傳動(dòng)，并設(shè)有鎖車裝置，傳動(dòng)平穩(wěn)可靠，定位準(zhǔn)確，效率高。
4. QTZ20、QTZ20F塔機(jī)為雙吊點(diǎn)塔帽式結(jié)構(gòu)，采用小車變幅，上回轉(zhuǎn)液壓頂升形式，安裝快捷方便。

Properties and merits of QTZ20(3006) tower crane
1. The rated load moment of QTZ20 and QTZ2OF is 200KN.M. with the maximum hoisting capacity 2 T and the maximum working range 30 meters.
2. The lifting height of QTZ20 and QTZ20F tower cranes can be 25.5 meters when standing stationary alone . and 50 meters when anchored . The structure of this tower crane is novel and rational . with fine properties and pleasant appearance . The tower crane has a large radius and lifting height .Easy to operate and maintain . it can be utilized in the construction of buildings lower than 14 stories.
3. The slewing mechanism of QTZ20 and QTZ20F tower cranes adopts the advanced planet-gear speed reducer .  hydraulic coupler . and rotary backing transmission. And is equipped with lock mechanism. Therefore, it can transmit steadily, locate accurately and work efficiently.
4. QTZ20 Aand QTZ20F tower cranes adopt helmet structures with two hoisting points ,adopt small trolleys, hoist with upper slewing liquid pressure, and they can be installed quickly and conveniently.

QTZ31.5(3508)塔機(jī)特性及優(yōu)點(diǎn)
1． QTZ31.5塔機(jī)額定起重力矩315KN.M，最大起重量3T，最大工作幅度35米。
2． QTZ31.5塔機(jī)獨(dú)立固定狀態(tài)起升高度為27米，附著狀態(tài)可達(dá)到80米，適合27層以下的建筑施工。該機(jī)結(jié)構(gòu)合理，主要受力鋼結(jié)構(gòu)件如塔身、吊臂等采用無(wú)縫鋼管組成的行架式結(jié)構(gòu)，剛性好，風(fēng)載荷小，造型美觀。
3． QTZ31.5塔機(jī)綜合了全國(guó)同類塔機(jī)的優(yōu)點(diǎn)，改進(jìn)了不足之處，使本機(jī)性能更先進(jìn)，結(jié)構(gòu)更合理，造作使用安全可靠。
4． QTZ31.5塔機(jī)為雙吊點(diǎn)塔帽式結(jié)構(gòu)，采用小車變幅，上回轉(zhuǎn)，液亞頂升形式，安裝快捷方便。

Properties and merits of QTZ31.5(3508) tower crane :

1. The load moment of QTZ31.5 tower crane is 315KN.m, the maximum lifting weight is 3T. and the maximum working range is 35 meters.
2. The lifting height of QTZ31.5 tower crane can be 27 meters when standing stationary alone, and 80 meters when anchored, suitable for the construction of buildings lower than 27 stories . The structure of this tower crane is rational, for the main functioning steel parts , such as the tower and the crane, are made up of seamless steel tubes with proper hardness , little wjnd resistance and a pleasant appearance.
3. Combining the merits of the tower cranes of the same kind and improving their disadvantages, QTZ31.5 tower crane has better qualities and a more rational structure , and can be operated with safety.
4. QTZ31.5 tower crane has helmet structures with two hoisting points, adopt small trolleys, hoists with upper slewing liquid pressure , and it can be installed quickly and conveniently.

QTZ63(5013)塔機(jī)特點(diǎn)及優(yōu)點(diǎn)
1． QTZ63 塔機(jī)額定起重力矩630KN.m,最大起重量6T，最大工作幅度50米；
2． QTZ63 塔機(jī)固定狀態(tài)起升高度39米，可進(jìn)行13層以下的工業(yè)及民用建筑的吊裝施工，附著高度140米，可進(jìn)行45層以下的工業(yè)及民用建筑的吊裝施工；
3． QTZ63 塔機(jī)為雙吊點(diǎn)、 水平臂架，小車變幅，上回轉(zhuǎn)、液壓頂升結(jié)構(gòu)，安裝拆卸快捷方便；
4． QTZ63 塔機(jī)6T起升機(jī)構(gòu)采用雙速單滑環(huán)繞線轉(zhuǎn)子渦流制動(dòng)特種電機(jī)，教常規(guī)變極調(diào)速電機(jī)大大降低了電流和慣性沖擊，顯著提高了接觸器的壽命，確保機(jī)構(gòu)具有較好的平穩(wěn)性和可靠性，且提高了就位準(zhǔn)確度。根據(jù)用戶需要，起升機(jī)構(gòu)還可以采用三速電機(jī)。
5． QTZ63 塔機(jī)采用法國(guó)POTAN 公司技術(shù)的ODM系列回轉(zhuǎn)機(jī)構(gòu)，該機(jī)構(gòu)采用了先進(jìn)的電力，電子技術(shù)，電磁聯(lián)軸節(jié)和行星減速器無(wú)級(jí)調(diào)速，起動(dòng)扭鋸大，運(yùn)行平穩(wěn)，性能先進(jìn)。 

Properties and merits of QTZ63(5013) tower crane :
1. QTZ63(5013) tower crane : rating moment of lifting :630KN.M. the max lifting capacity: 6t, the max range: 50 m.
2. QTZ63(5013) tower crane : Fixed lifting height :39 m, can undertake 13-story or below buildings, adhesion height 140 m ,can undertake 45-sotry or below buildings.
3. QTZ63(5013) tower crane owns two lifting points, level beam, upper rotating ,hydraulic lifting ,easy for installation and disassembling.
4. QTZ63(5013) 6t tower crane use special motor and lows electric shock and ensure the leveling and stability. The QTZ63(5013) 6t tower crane can also use three speeds motor.
5. The QTZ63（5013）tower crane adopt the technology of ODM series turning framework of POTAN French, the framework use the advanced electric and electronic technology, electromagnetism coupling and planet reducer infinitely timing, twisting moment large when staring, operate smoothly, advanced function.
項(xiàng)目items 參數(shù) parameter
起升速度及起重量
Hoisting speed and lifting capacity  4倍率
Ratio 4 速度 4.5 19.5 40
  起重量 6 6 3
 2倍率
Ratio 2 速度 9 39 80
  起重量 3 3 15
回轉(zhuǎn)速度 Slewing speed (r/min) 0/0.7
變幅速度 Trolleying speed (r/min) 42/21
頂升速度 Hoisting speed (r/min) 0.5
最低穩(wěn)定下降速M(fèi)inimum lowering speed(m/min) 不大于5
 
QTZ80(5613) 塔機(jī)特點(diǎn)及優(yōu)點(diǎn)
1.QTZ80(5613)塔機(jī)額定起重力矩800KN.m,最大起重量8T，最大工作幅度56米。
2.QTZ80(5613)塔機(jī)獨(dú)立狀態(tài)起升高度為45米，可進(jìn)行14層以下的工業(yè)及民用建筑的吊裝施工。附著高度150米，可進(jìn)行50層以下的工業(yè)及民用建筑機(jī)械的吊裝施工。
3.QTZ80（5613）塔機(jī)為雙吊點(diǎn)，水平臂架，采用小車變幅，上回轉(zhuǎn)，液壓頂升形式，安裝快捷方便。
4.QTZ80（5613）塔機(jī)起升機(jī)構(gòu)，采用雙速繞線電機(jī)，起動(dòng)平穩(wěn)，可實(shí)現(xiàn)輕載高速，重載低速，工作效率高，噪音低優(yōu)點(diǎn)。
5.QTZ80（5613）塔機(jī)采用法國(guó)POTAN公司技術(shù)的ODM系列回轉(zhuǎn)機(jī)構(gòu)，該機(jī)采用了先進(jìn)的電力、電子技術(shù)、電磁聯(lián)軸節(jié)和行星減速器無(wú)級(jí)調(diào)速，起動(dòng)扭距大，運(yùn)行平穩(wěn)，性能先進(jìn)。

Properties and merits of QTZ80(5613) tower crane :
1、QTZ80(5613) tower crane : Rated moment of lifting :800KN.m, the max lifting weight :8t, the max range :56m.
2、QTZ80(5613) tower crane : Set lifting height : 45m, can undertake 14-stoery or below building , adhesion height 75 m and 150 m , can undertake 32-story or 50-story or below building.
3、QTZ80(5613) tower crane owns two lifting points, level beam, upper rotating, hydraulic lifting, easy for installation and disassembling .
4、QTZ80(5613) tower crane uses rotating motor, light load with high speed and heavy load with low speed, low noise.
5、QTZ80(5613) tower crane adopt the technology of ODM series turning framework of POTAN French , the framework use the advanced electric and electronic technology, electromagnetism coupling and planet reducer infinitely timing, twisting moment large when starting, operate smoothly, advanced function.  
QTZ125(6015)塔機(jī)特性及優(yōu)點(diǎn)

1． QTZ125塔機(jī)額定起重力矩1250KN.m，最大起重量8T，最大工作幅度60米。
2． QTZ125塔機(jī)獨(dú)立固定狀態(tài)起升高度為50米，可進(jìn)行16層以下的工業(yè)及民用建筑的吊裝施工。附著狀態(tài)有100米（4倍率）和163米（2倍率）兩種高度，可分別進(jìn)行32層及52層以下的工業(yè)及民用建筑的吊裝施工。
3． QTZ125塔機(jī)為雙吊點(diǎn)，無(wú)塔帽式結(jié)構(gòu)，采用小車變幅，上回轉(zhuǎn)，液壓頂升形式，安裝快捷方便。
4． QTZ315塔機(jī)起升機(jī)構(gòu)及回轉(zhuǎn)機(jī)構(gòu)均采用繞線電機(jī)，起升、回轉(zhuǎn)平穩(wěn)，可實(shí)現(xiàn)輕載高速，重載低速，工作效率高，噪音低等優(yōu)點(diǎn)。

Properties and merits of QTZ125 tower crane :
1. The rated load moment of QTZ125 tower crane is 1250KN.M, the maximum working range is 60 meters.
2. The lifting height of QTZ125 tower crane can be 40 meters when standing stationary alone, suitable for the hoisting construction of industrial and civil buildings lower than 16 stories. It can be 100 meters and 163 meters when anchored, suitable for the hoisting construction of industrial and civil buildings lower than 32 stories and those lower than 52 stories respectively.
3.QTZ125 tower crane adopt helmet structures with two hoisting points, adopt small trolleys, hoist with upper slewing liquid pressure, and they can be installed quickly and conveniently.
4. The hoisting and slewing mechanisms of QTZ125 tower crane use wire-winding electric motors, and steady hoisting and slewing can be realized, Besides, it can provide high speed for light load and low speed for heavy load, working efficiently with little noise.