L68B2 Tower Crane Mast

Ref Price:
Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
-
Supply Capability:
100 set/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Mast Dimension: 2x2x3m

Type: 4 pieces will connect to one whole mast, this is saved for loading.

including connecting bolts and safety pins, climbing ladder

Each three units mast have 1 unit  rest platform

Main Material: angle steel L200x200x20mm

This mast can be used on POTAIN tower cranes, and it can be instead of POTAIN tower crane mast.

Packing details: 1x40HQ can put 12 units mast.

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:type of dc motors used by electric train/subway,crane & fan.give a brief explanation to your answer?
I believe that electric trains and subways use series motors when DC motors are used because the series motor has a torque vs. speed curve that provides high torque at low speed and low torque at high speed. Since power is equal to torque times speed, that is essentially a constant power mode of operation. I believe that mode is selected because it results in a smaller and less expensive complement of power delivery equipment and more efficient operation. Although it has been many years since DC motors were used extensively for cranes, I believe that series motors were used more than other types for the same reasons stated above. However, compound or separately excited motors may have been used for better speed and torque control at low speeds. Except for heater fans in vehicles, I don't believe DC motors have ever been used much for fans. Today, permanent magnet DC motors are used for all of the little motors in vehicles including the radiator fan that was formerly belt driven by the engine. A permanent magnet motor is like a separately excited motor or a shunt motor. The optimum DC motor for a fan would probably be a shunt motor because a fan requires increasing torque as speed increases. Today, computers are cooled by brushless DC motors.
Q:On an offshore oil rig, is the crane the same as the flare boom?
The flare boom is used to burn off gas from the well. It is basically a pipe that directs the gas to a safe location.
Q:How do you make a thousand paper crane lei?
But I do different from step 11 on Step 11: Normally they fold along the red line. I dont. On step 10 you see the cross line in the center +. I then fold the right pointy toward the center. Do the same for all. Step 12: I the filp the right top layer to the left, same with the back side. Step 13: fold the bottom point to the top(one layer only) filp to back side, do the same. Step 14: flip right layer to the left again, same with the back side. Step 15: Pull and done.
Q:Safety rules for tower cranes
Three. Check after shutdown3.1 after the tower crane has stopped operation, it is necessary to select the suitable position of the barrier and the middle of the track when the turret is turned and the arm to stop along the wind, and then lock all the rail clamps.All 3.2 tower crane rotary mechanism with a normally closed or braking device, in the stop after the operation, the driver must remove the handle, release the brake for crane in the wind blowing in under the direction of rotation.3.3, the hook should be lifted to the minimum distance from the lifting wall, not more than 5m position, hanging on the hook is strictly prohibited. Not to take reliable measures, not by any means, limiting the boom rotate with the wind.
Q:Hunger Games Movie Spoiler! (question about Seneca Crane aka Gamemaker)?
I think he is supposed to eat and die because Prez Snow got pretty angry at Seneca for having two winners for the Hunger Games
Q:Why are sand hill cranes called sand hill cranes even though they ...?
Seem for wild animal rehab centers or just google search these in ur area or name ur local animal refuge and explain whats occurred and ask if they could advise a place to name.
Q:What is the worlds heavy-est crane lift?
It is MTC 78000 in offshore industry.It can able to lift nearly 2000 tonnes and is one of the world's biggest slewing cranes.
Q:How does a crane operator's knowledge of where the centroid is generally located for most uniform objects?
If an object is uniform, it's a fair bet the centre of mass will be at the centre of the shape. If lifting with slings, he will have them placed equidistant from centre, at an angle to each other not exceeding 60 degrees. He will then lift a little, and can tell by the angles from vertical of each sling whether or not the CM is under the centre of the crane cable. If not, he will lower the load, and have someone adjust the sling positions. Having slings equally loaded ensures a level load when lifting, and when a load is level it is a much safer lift than when it tilts one way or the other. A tilt would mean greater force in the sling on the low end. The load could slip out, or the excess force could break the sling.
Q:Notice of tower crane
Please refer to the technical regulations for the safety of installation, disassembly and use of tower cranes in construction;The following is copy:3 installation of tower cranes3.1 conditions for installation of tower cranes3.1.1 tower crane installation unit must have the construction administrative departments issued the contracted professional qualification and heavy equipment installation engineering construction enterprises safety production license. Tower crane installation units must be engaged in the installation of tower cranes within the scope of qualification permit.In addition to the professional and technical personnel who have the qualification standard, the installation units of 3.1.2 tower cranes shall also have professional personnel who are in line with the project. The person in charge of the project, the project manager and the full-time safety management personnel shall have the certificate of safety production inspection. Tower cranes, installers, electricians, drivers, signal engineers, cable operators should have special construction operation qualification certificates.3.1.3 construction units shall sign professional contract for installation engineering with the installation units, and make clear the responsibility of both sides for safety in production. In case of general contracting of construction, it shall be signed by the general contractor and the installation unit.
Q:Dawkings' Boeing crane. How did it arise, and continue to work?
Bit by bit you may come to realise that complexity out of simplicity is much easier to comprehend than complexity from nowhere. The crane idea is from Daniel Dennet I think, and the boeing being assembled by chance is more or less what happened only bit by bit through evolution and natural selection. God is the complexity from nowhere to which I refer. Self-complete creator? did he make himself?

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range