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Packing and Handling


Bevel Protectors

The photographs show how bevel protector is installed.
The protector is made of a steel strip forming into a circular shape.
The abutting ends of the ring are fitted with steel wedge clasps.
Bevel protectors of the type shown in the photographs are used for large diameter line pipe.
The wedge, which has either machined reverse teeth or plain edges, is inserted into the claps and tapped into place to expand the protector inside the pipe end.
This protects the vulnerable root face and bevel against damage during subsequent handling from mill shipment to arrival at the job site.

Installation of bevel protector 1 Installation of bevel protector 2 Installation of bevel protector 3
Installation of bevel protector (in sequence from left to right)

  Example of Bevel Protector
Example of Bevel Protector

Handling, Storage and Loading Tiers

Improper practices or careless handling are likely to result in pipe damage of the following types:

(a) Denting, ovalling caused by use of improper supports or stacking to excessive heights.
(b) End damage caused by use of improper end hooks for lifting or by rough handling in which the pipe end is struck.
(c) Fatigue cracking caused by vertical vibrations during transportation as a result of excessive static and cyclic loads.
(d) Abrasion, scratching caused by the pipe wall being rubbed or struck against other objects.

Hooks Hooks shall be designed to prevent end damage and shall be lined with rubber. They shall also have sufficient width and depth to fit the inside of the pipe.

Lifting shall be carried out so as to prevent impact loads that could cause local denting or out-of-roundness of the pipe body or pipe ends.

Bevel protecting
Bevel protectors which are loose or missing shall be reattached to the pipe end before the pipe is handled.

The surface on which the pipe will be laid or stacked shall be flat and free of protrusions. Bearing strips shall be carefully leveled to provide uniform load distribution.

Loading Tiers and Bottom Dunnage
The maximum allowable number of loading tiers the stowage of steel pipe cargoes (with D/t over 50) is
calculated by the following formulas:

n = Loading tires
P = Stowage method/length of vessel
P Stowage
Length Vessel
a. 5.65 6.05 6.25 6.78 Theoretical figure.
not suitable for calculation.
b. 3.07 3.29 3.54 3.69 In case of 1 point support.
c 17.19 18.40 19.82 20.62 Theoretical figure.
not suitable for calculation.
d. 6.85 7.33 7.90 8.21 In case of 2 point support.
D = Outside diameter (mm)
t = Thickness of pipe (mm)
σγ = Minimum yield point (kg/mm²)

 (2) Variations in (n) occurring with the use of bottom dunnage.

L = Pipe length (m)
B = Number of pieces of bottom dunnage
W = Width of bottom dunnage (m)

Pipe loading   Yard-to-ship loading facility
Pipe loading   Yard-to-ship loading facility


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Packing and Handling

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