Frequently Asked Questions

Are Green Pin® Turnbuckles suitable for lifting applications?

Green Pin® Turnbuckles G-6311, G-6312, G-6313, G-6314, G-6315, G-6323 and G-6333 are suitable for lifting applications. These items have a Proof Load equal to 2 x WLL and Minimum Breaking Load equals to 5x WLL. Of course the “Instructions for use”, as we publish them in our catalogue should be respected at all times.

Note: It is not permitted to adjust the length of the turnbuckle under full load. Tensioning below the WLL is permitted. It is advisable first to adjust roughly the length of the turnbuckle and then load the turnbuckles to a certain tension. The tension may not exceed the full capacity (WLL).

Note: that it is not permitted to lift a load by tensioning (rotating the body) the turnbuckle, as shown in the picture below:

Do not rotate turnbuckle body when lifting

FAQ-Reference PI-02-01. Revision B.

Does the screw thread on a Green Pin® Shackles with a screw collar damage counter components such as wire rope?

We have realized a small modification of Green Pin® shackles (WLL2t) with screw collar pins. In an earlier design, after assembly some of the threading is visible at the shackle eye:

Green Pin Screw Pin Chambering

In the current design, hardly or no thread is visible at the shackle eye. We realized this by making a small “chamber” in the shackle eye. The advantage of the new design is reduced wear of counter components like, wire rope, chain, rope and or synthetic web slings and their fittings.

Green Pin Screw Pin Shackle Chamber

FAQ-Reference: PI-02-02. Rev: 0.

Are Green Pin Tycan® chains resistant to chemicals?

Green Pin Tycan® chains are made from 100% Dyneema® UHMWPE fibers which are very resistant against chemicals and thus have a negligible impact on the lifting capacity or functionality. The fibers are highly crystalline and do not contain any chemical groups such as aromatic rings, amide, hydroxyl or others which are susceptible to attack by aggressive agents. UHMWPE fibers do not swell, hydrolyze or otherwise degrade in water, seawater or moisture. Properties such as tension, fatigue, yarn on yarn abrasion and bending fatigue may improve through contact with water. This is attributed to the cooling or lubricating effect of the water. The chemical resistance has been analyzed using loss of tensile strength as the key indicator. To classify the impact of chemicals the following categories are being used. The tables below offers a general guideline only. The material must always be tested for your specific conditions.

Green Pin Tycan Chains Checmical ResistanceGreen Pin Tycan Chains Chemical Resistance

FAQ-Reference: PI-02-07. Rev: A.

Are there any recommendations for the inspection of shackles?

It is required that shackles are regularly inspected and that the inspection should take place in accordance with the safety standards given in the country of use. This is required because the products in use may be affected by wear, misuse, overloading etc. with a consequence of deformation and alteration of the material structure. Inspection should take place at least every six months and even more frequently when the shackles are used in severe operating conditions.

Shackles should be inspected to ensure that:

  • all markings are legible;
  • the body and pin are both identifiable as being of the same size, type and make;
  • the threads of the pin and the body are undamaged;
  • for a safety bolt type shackle is used with the split cotter pin;
  • the body and the pin are not distorted or unduly worn;
  • the body and pin are free from nicks, gouges, cracks and corrosion;
  • shackles are not heat treated as this may affect their Working Load Limit;
  • the shackle is not modified, repaired or reshaped by welding, heating, machining or bending as this will affect the Working Load Limit;

Remove the shackle from service if:

  • all markings are not  clearly legible;
  • body and pin can not be identified as being from same size, type and make;
  • the threads of the pin and/or body are damaged;
  • for a safety bolt type shackle the split cotter pin is missing;
  • the body and/or pin is distorted or unduly worn, the maximum allowable wear is 10% of the original dimension;
  • the body and/or pin is not free from nicks, gouges, cracks or corrosion;
  • the shackle has been exposed to any heat treatment;
  • the shackle is modified, repaired or reshaped by welding, heating, machining or bending;
  • t is expected that before the next periodical inspection any of the inspection criteria above will not be passed;

FAQ-Reference: PI-06-01. Rev: 0.

Are there any recommendations for additional stamping on Green Pin® Shackles?

Note: Main dimensions, general info and warnings can be found in our latest catalogue.

If the recommendations in this product information are followed performance of the shackles is guaranteed:

  • permanent identification marks, or symbols, are to be made by dot peen marking or with stamps having rounded profiles (low stress stamps).
  • the number of marks on a shackle is to be kept to the minimum.
  • the use of fractions and oblique strokes is to be avoided and a dot or hyphen is preferable to a dividing line.
  • values of WLL are, generally, to be marked to one place of decimals (except for 0.25 and 0.75) up to 100 t and in integers thereafter. The word “tonnes” may be abbreviated to “t”.
  • recommended sizes of marks are
    • Diameter of part to be marked > recommended size of mark
    • less then 12.5 mm > 3.0 mm
    • 12.5 to 26 mm > 4.5 mm
    • over 26 mm > 6.0 mm

Typical arrangements of marks can be found in the following illustrations.

Additional stamping on Green Pin<sub>®</sub> Shackles 1

Additional stamping on Green Pin<sub>®</sub> Shackles 2

Additional stamping on Green Pin<sub>®</sub> Shackles 3

FAQ-Reference: PI-05-03. Rev 0.

Is it allowed to weld on Green Pin® lifting equipment?

No! Green Pin® products are treated with well designed heat treatment, which results in a certain Minimum Break Load and other specific mechanical properties. These properties will be destroyed by the heat of welding. It even can initiate extreme hard spots and initial cracks, that will decrease the strength and fatigue life dramatically. An exception is made for Green Pin® GH and PAS products, as these need to be welded to a surface to function. For these items, please follow the instructions that are available at Green Pin® sales.

FAQ-Reference PI-07-02.

How do I design a sling?

Green Pin® is a sponsor of sling design program 'SlingPro' developed by Engineering Spreadsheets UK. Click here to download this program.

How should I use the Green Pin® Guided Pin ROV Shackle?

Please find the user manual here.

How should I use the Green Pin® Locking Clamp ROV Shackle?

Please find the user manual here.

How should I use the Green Pin® Spring Pin ROV Shackle?

Please find the user manual here.

How should I use the Green Pin® Spring Release ROV Shackle?

Please find the user manual here.

How should I use the Green Pin® Tapered Pin ROV Shackle?

Please find the user manual here.

How should I use a shackle with a fixed nut?

Please find the user manual here.

How should I use Green Pin® swage sockets (S-6414 and S-6415)?

Please find the user manual here.

How do I select the correct Green Pin® shackle for optimal sling conditions?

Please find the answer in this document.

Where can I find CAD drawings of Green Pin® products?

If you go to the product pages of individual products on this website, you can download the CAD-drawing (3D) of that product:

  • On the product page, go to the table with dimensions
  • Select the productsize that you are interested in
  • A Download button will appear

If no Download button appears, no CAD-drawing for this product is available.

Downloading-Green-Pin-CAD-drawings

Where can I find the DNV-GL Type Approval Certificate of the Green Pin Power Sling®?

Please download it here.

Where can I find the DNV-GL Type Approval Certificate (2.7-1 Offshore Containers (2013)) of Green Pin® bow/dee shackles and polar shackles?

Please download it here.

Where can I find the DNV-GL Type Approval Certificate (ST-0378) of Green Pin® bow/dee shackles and polar shackles?

Please download it here.

Where can I find the ABS PDA certificates for Green Pin® shackles?
What do the abbreviations in Green Pin® product names stand for?

BN = Bolt & Nut, or safety bolt
CL = Clevis
CP = Cotter Pin
D = D-Handle
E = Eye
EE = Eye-Eye
EJ = Eye-Jaw
EH = Eye-Hook
F = F-Handle
FN = Fixed Nut
FP = Flush Pin
GR10 = Grade 10
GR5 = Grade 5
GR8 = Grade 8
HH = Hook-Hook
HK = Hook
H-type = Horizontal
JJ = Jaw-Jaw
ROV = Remotely Operated Vehicle
S = Shackle
S/S = Stainless Steel
SC = Screw Collar, or Screw Pin
SCL = Swivel Clevis
SE = Swivel Eye
SQ = Square headed Screw Pin
U-type = Universal (Horizontal and Vertical)
V-type = Vertical

What components do the Green Pin Tycan® Lashing and Lifting systems consist of?

Please see this document.

Certificates: overview and specifications Green Pin® Shackles

You can download this overview here 

Why use Green Pin Tycan® Chain?

Green Pin Tycan® Chain allows companies to achieve a safer working environment for their crew. The soft touch and light weight reduce the risk of bad backs, cuts, bruises or hearing damage. Furthermore, the risk of damage to vulnerable and valuable cargo is reduced significantly, as is the threat of claims from customers. Green Pin Tycan® Chain is very easy to use and up to eight times lighter than a steel chain of comparable strength. This makes even long lengths of Green Pin Tycan® Chain light enough for one person to work with all day long. Your operations will benefit from reduced sick leave, fewer delays and lower transport costs.

Where is Green Pin Tycan® made from?

100% from Dyneema®, the world’s strongest man-made fiber™, is manufactured by multinational DSM, headquartered in the Netherlands and respected as the premium brand for Ultra-High Molecular Weight Polyethylene (UHMwPE). Dyneema® is light, flexible and up to 15 times stronger than steel on a weight-for-weight basis.

What capacity is Green Pin Tycan® Chain?

Green Pin Tycan® Lifting Chain
Green Pin Tycan® Lifting Chain is available with a WLL of 2.6t, 4t, 5t or 6.8t (by use of an 1 leg sling)
Safety factor: MBL equals 4 x WLL
Table Green Pin Tycan Lifting Chain ENG

Green Pin Tycan® Lashing Chain
Green Pin Tycan® Lashing Chain is available with a LC 10t or 13.6t
Safety factor: MBL equals 2 x Lashing Capacity

Green Pin Tycan® Chain is used almost exclusively outdoors. What happens when exposed to UV or it gets wet?

Green Pin Tycan® Chain is waterproof and does not absorb water. It is also resistant to UV.

What happens to Green Pin Tycan® Chain when used in the oily, greasy environments often found where the chain is used?

Green Pin Tycan® Chain is very resistant to oil, dirt, diesel, grease, non-oxidizing chemicals etc. which all have a negligible impact on the capacity or functionality. It can be cleaned with a high pressure hose.

Steel chain can elongate close to 20% at MBL. What about Green Pin Tycan® Chain?

Green Pin Tycan® Chain has a linear elongation of less than 5% at MBL.

Why is there a twist in Green Pin Tycan® Chain?

The famous twist was discovered by the German mathematicians Möbius and Listing in 1858. The twist distributes the forces in each link of Green Pin Tycan® Chain equally which significantly increases the capacity.

Will Green Pin Tycan® Chain meet the required certification in my country?

Green Pin Tycan® Chain is type approved for lifting by DNV-GL. Click here to open the first page of our DNV GL type approval certificate: TAS00001X8.

What testing was performed in collaboration with DNV GL on Green Pin Tycan® ?

As Green Pin Tycan® Chain is not a rope, a steel chain, a synthetic round sling etc. it did not fall into any existing standards. Therefore, a full, bottom up process was conducted in collaboration with DNV GL. This included multiple testing which include, but not limited to, break strength, fatigue, UV resistance, failure mode, resistance and elongation. The results allowed DNV GL to issue a Technology Qualification for Green Pin Tycan® for lashing. DNV GL issued an Type approval for the Green Pin Tycan® lifting.

Where can I learn more or buy Green Pin Tycan®?

Visit www.tycan.com, it has a great video and you can download the brochure. Green Pin Tycan® is available worldwide via our 900+ network of distributors. Please contact us at sales@vanbeest.nl or your local distributor.

Which components can be used with Green Pin Tycan® Chain?

Components for Green Pin Tycan® Lifting Chain:
Table Green Pin Tycan<sub>®</sub> Lifting Chain Components
Components for Green Pin Tycan
® Lashing Chain:
Table Green Pin Tycan<sub>®</sub> Lashing Chain Components

How should I use Green Pin Tycan® Lifting Chain?

Please find the User Manual here

How should I use Green Pin Tycan® Lashing Chain?

Please find the user manual here.

Green Pin Media