Two-thirds of our investment is aimed at improving the performance of our products, for example investing in material tests and quality controls    >>

With a growing portfolio of products and an increasingly comprehensive range of customised solutions,

our investment in design and R&D is very important

OUR MATERIALS
ORIGINS

 All Bi Quadro products are designed and made in Italy, including our Polypropylene Straps, Cucirini thread and 840 Nylon PVC Coated fabric. Only certified fabric, belts and material, made in compliance with non toxic material regulations, are used to manufacture Bi-Quadro accessories.

FLAME RESISTANT
FABRICS

 The quality and performance of our materials is tested in a UK laboratory according to EU safety guidelines. The ignitability of our products is subjected to direct impingement of flame. Test results classify Bi Quadro materials in Euroclass E.

HEAT-PRESSED
BRAND LABELS

Although shapes can be identical, materials and manufacturing techniques are not. We therefore have a duty to make sure that users can identify our bags, and their outstanding quality of production, without confusion. Thus from 2016, Bi Quadro has manufactured all its chain bags with a heat BQ logo, pressed into the supporting belts.

DOUBLE CROSS
SEWING

 Chain bags are designed to hold tons of weight, and their weakest point is their stitching strength. With a sophisticated cross-stitching technique, we ensure the quality of the sewing is supremely robust, giving strength throughout the life time of each bag, no matter how much weight it holds.

CAPACITY
LABELS

 Inside each Bi Quadro chain bag, you will find a label with part number, SWL, Safety Factor and References for four of the most commonly used load chains. Other measurements can be found on our sales and product literature.

DOUBLE CROSS
BELT

Two straps criss-cross at the bottom of our chain bags. With our double criss-cross belt technique, we increase the loading capacity and prevent the bottom of our bags from falling through, even in the case of very long chains.

SPILLING POINT
100% CAPACITY
SAFE WORKING CAPACITY
SPILLING POINT TEST CONDITION

Step 1

Chain bag hanged, attached to a chain hoist

Step 2

Load chain partially lubricated/dry (worst case scenario)

Step 3

Chain bag filled up in fall-free mode (chain hoist was filling the chain bag)

 

Step 4

Chain bag not shaken during tests

 

Step 5

Chain hoist speed: 8m/min and 4m/min

100% CAPACITY TEST CONDITIONS

Step 1

Chain bag hanged, attached to a chain hoist

Step 2

Load chain partially lubricated/dry (worst case scenario)

Step 3

Chain bag shaken several times

We measured 6 sizes of chain bags with two types of chain: 7.9 x 21.7 and 7 x 22 load chain. During the test we identified a common pattern which helped us to reach the conclusions we’ll state below.

SAFE WORKING CAPACITY TESTING

Within each spilling point test, we noticed that the length of chain necessary to reach a dangerous condition (a chain link above the upper edge of the chain bag opening), varies a lot.

We recorded the worst case value of the 3 tests we perform for each chain bag.

In some circumstances a 75% capacity would just guarantee a safe working capacity, in other cases 75% was not enough.

Download our catalogue for full results.

CONCLUSIONS >>

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