Q: We have heard complaints from customers that the weights or length stated doesn't match with what is delivered.
Actually, we have heard some rumours as well. But for all OEMSERV strapping and lashing belts, we can GUARANTEE that all figures stated on our documents will match with what we deliver. Our QC system is one of the most effective in the market. Surely mistakes can happen, but in OEMSERV they are very unlikely.
Q: Are there any joints/cuts in your rolls of strapping or lashings?
No, according to our self-imposed QC rules, only every 10th roll ( 10% ) of one shipment can have one ( 1 ) joint. That's very low.
Q: What are linear breaking strength ( LBS ), system strength, breaking strength ( BS ) and maximum securing load ( MSL )?
The linear breaking strength (LBS) is tested in our laboratory and measured in daN. One belt is pulled in a special testing machine to its breaking point.
To calculate the system strength you can use this simple formula. The belt is used in a loop, so the system strength is double the LBS.
But there is a weak point in the system, the buckle. Modern standard buckles have a 'Joint Efficiency' of 80% on average.
So that leads to the following calculation: LBS x 2 x 0.8 f.e. LBS of 1000 daN provides a system strength of 1600 daN.
The result of this is the system strength, also called the breaking strength ( BS )
The maximum securing load ( MSL ) relates to the weight of the load. The IMO (International Maritime Organisation) recommends a safety factor of 2.
The belts of the strapping or lashing system should have the double breaking strength ( BS ) as the cargo weight to secure ( MSL ). ergo: MSL is always 50% of the BS
Q: What about problems with delamination of Polyester Composite Strapping?
We do have very few complaints about delamination, overall less than 2%. Regardless of this small figure, we did investigate every single case.
As a result, we found that in almost all cases wrong buckles or the wrong tensioner has been used. Especially a cheap tensioner with a wrong breakle shoe can damage the Polyester Composite Strapping. We highly recommend using an OEMSERV tensioner since they are specially designed for all our products.
Q: What’s the lifetime of the Polyester Composite Strapping?
We suggest using our strap within one year since we do not know the weather and storage conditions.
Q: What is the temperature range for the Polyester Composite Strapping?
Regarding the temperature range, we tested from -10 to +80 degrees Celsius.
In theory, there is no problem down to -30 degrees Celsius, but we never test so low since nobody uses the strap in such low temperatures.
Q: How about the UV protection performance of the Polyester Composite Strapping?
For UV protection we add a UV stabilizer that does not mean the strap is resistant again to the UV but stable for a reasonable time.
We estimate it to be good for 7-10 Years. Since we can not be sure about all these figures we do not recommend the Polyester Composite Strapping
for outside construction. Besides all this, for sure the buckle can not last that long the metal will start to oxide after some time.
Q: What are the advantages of using untwisted yarn for Polyester Composite Strapping?
The advantages of using untwisted yarn are :
1) Strength of the yarn is up to 15 % higher
2) The price of the yarn is lower
3) The elongation of the yarn is 5-10% lower, the elongation of the strap is also much lower.
Q: Do you have an AAR certificate for your strapping/lashing belts?
Yes, our most common belts are AAR-certified by our USA partner company.
Q. What advantages does metal strapping 13-19 mm have over polyester composite Strap?
The system strength for the Polyester Composite Strap and the shock resistance is much higher.
According to our experience, Polyester Composite Strap is not more expensive than steel or PET if you compare the system strength.
It is safer to use for people to attach or detach the strap, it is safer in transport, it does not rust and it can be re-tensioned.
Q: What chances do we have to make metal strapping users replace it with a Polyester Composite Strap?
Worldwide wide we are replacing everyday steel straps with Polyester Composite Strap, so there is a very good chance.
Since steel straps are dangerous, harder to handle and less strong in the system.
Q: Can PET strapping belts be replaced by Polyester Composite Straps?
No, we can not replace PET used in automatic machines. But we can offer a comprehensive range of high-quality PET strapping on request.
Q: Are there any cases when polyester composite straps can not replace metal strapping? What are they?
Yes, in some rare cases where buyers need to heat the goods after strapping here we can not use Composite strapping.
Q: What’s the advantage of the polyester composite strap compared to the PET strap？
We compared composite Strap2000, metal strapping and PET strapping in the sizes of 13,16 and 19 mm.
It appeared that Polyester Composite Strapping has the best value of breaking strength in each size, metal strapping comes second.
The main advantage of Composite compared to PET is the edge Protection and much higher resistance against shock or mechanical stress on edges.
Besides this a PET system can reach 80 % System strength in lab conditions our minimum system strength is 80% usually we reach more than 85 %