Tower Crane M22/M27 Pin And J Bolt M55/M50
Pins diameterFit crane typetypematerials50mmL44A1, L46A1Galavanized/ parkerizing35CrMo55mmL68A1, L68B1, L68B2Galavanized/ parkerizing35CrMo
Assembling the mast panels,connect the mast secion with section or basic mast,we use pins.for the 1.6m mast section ,we use 50mm diameter pin,for the 2m mast secion,we use 55mm diameter pin.
FAQ
1.the principle of the telescoping
The telescoping sequence comprises a series of operations which are repeated seveval times.
Lifting the crane part to be telescoped by extracting the ram which rests on the telescoping yoke. Resting the lifted crane part on the lugs of the mast by means of the locking pawls of the telescoping cages.
Unpin in and raise the telescoping yoke by retracting the ram.
Connect the yoke on the next pair of the lugs above.
Repeat this cycle 3 times so as to have the space required for introducing the mast section into the telescopic cage.
2.how many years have you invovled in this field?
We have been working in this field more than 20 years.
3.What is the warranty term of your product?
the warranty term of our product is 12month
4.What is the shipping way?
It depands on yours.by sea or air
5.Can you accept OEM or ODM?
Of course.Logo is also acceptable.